Inkiostro: Markdown Editor1.13.1 - App Store

Inkiostro is a Markdown editor for people who write - notes, documentation, theses, novels. Plain text files that stay yours, a preview that looks like a finished page, and exports ready to hand over. Write in Markdown, or in the visual editor and never see a symbol.

Buy once, no subscription. No account, no tracking.

WRITE, SEE, FINISH
. Two ways to write: the Markdown editor shows the symbols, the visual editor formats as you type, like a word processor. Either way the file stays plain Markdown. (Visual editor: Pro, free for 7 days)
. A complete Markdown toolbar: headings, lists, tables and code blocks, one tap away.
. A side-by-side preview that comes back exactly where you left it.
. LaTeX formulas typeset by KaTeX, and Mermaid diagrams drawn as you type.
. 27 preview styles, 11 of them free: GitHub, Sepia, Nord, Solarized and more. With Pro, Manuscript, Book, Report, Academic and others set the page like print.
. Focus and Typewriter modes, a live word count and a daily writing goal.

FROM DRAFT TO BOOK
. PDF with selectable text, formulas and diagrams included. Free, with a small credit line in the footer.
. A professional ePub: real chapters, a cover, ISBN, series, footnotes that open over the page, and the accessibility declaration Europe requires. The export sheet tells you what a store would reject - before you send it. (Pro)
. A book made of many files: one chapter per file, in a folder, in the order you choose. Arranging it is free; exporting it as a single ePub is Pro.
. Self-contained HTML, and page setup for PDF: paper, margins, headers and page numbers. (Pro)

NEVER LOSE A WORD
. Version history: Inkiostro saves versions as you write. Search them, compare them line by line, and bring back a single word or a whole draft. (Pro)
. Backups of your whole library: a dated zip archive with your version history inside, offered when one is due, while the app is open, in a folder you pick. Open it in the Files app and your Markdown files are right there. (Pro)

YOUR FILES, YOUR RULES
. Unlimited documents, as plain .md files you can open anywhere.
. Folders, color labels and tags, with search that filters by tag.
. iCloud Drive sync between iPhone, iPad and Mac, with no setup.
. External folders: work directly inside any folder on your device or in iCloud Drive. (Pro)

INKIOSTRO PRO - ONE PURCHASE, EVERY DEVICE
One purchase unlocks Pro on iPhone, iPad and Mac, forever. Try it free for 7 days.
. The visual editor
. Version history with search, comparison and a year of versions
. Backups of your library
. Professional ePub, HTML, and books made of many files
. PDF page setup
. Focus and Typewriter modes
. External folders
. 24 app themes, the Pro preview styles and any font installed on your device

MADE FOR
. Writers: novels and essays in plain text, out as a real ebook
. Students and researchers: notes and theses with proper formulas
. Developers: READMEs, documentation and technical notes with diagrams
. Anyone tired of paying every month for a text editor
. Anyone new to Markdown: the visual editor works like a word processor

PRIVACY
Your documents stay in your iCloud Drive or on your device. No servers of ours, ever. Inkiostro collects only anonymous, aggregated usage statistics - never personal data, never the content of your documents - and you can turn them off in Settings.

Version History Richer books, in ePub.

• A table of contents with subheadings: in the Chapters tab, choose how far it goes — chapters only, sections (##) too, or subsections (###) as well. Under each chapter you see the headings that will be in it.
• Links from one chapter to another: Insert › Link to a Chapter… In the ePub the link takes you to the right chapter, even after you reorder them.
• Your own fonts in the book: Look › Add a Font… The file goes into the book's folder and into the ePub, and you already see it in the preview.
• Rename in the table of contents now starts with the chapter's title already written. 1.13.1 4h ago Your own style, in CSS.

• Your CSS: start from any preview style and change what you like — a red title, a drop cap, more room between paragraphs. Ready-made recipes if you've never written CSS, and a bar above the keyboard for braces and colons. It reaches the preview, the PDF, the ePub and the HTML. In Settings › Styles.
• On iPad the CSS and its preview sit side by side, full screen.
• A book can have its own CSS, on top of its style, from the book panel.
• You stay where you were writing: saving no longer moves the cursor or the page, and Undo undoes what you just did. If a save fails, it turns red and tells you why.
• After an export, a short note tells you it's saved in Files. 1.13.0 1d ago Markdown or visual: now you choose how you write.

• The Visual Editor: headings, bold, lists, tables and formulas take shape as you type, like in a word processor. Format with the bar above the keyboard.
• Your file stays Markdown. Only the paragraphs you touch are rewritten, with the same signs you would use yourself; everything else stays exactly as it was.
• Tables edited cell by cell, formulas and Mermaid diagrams drawn in place, images pasted straight in.
• Choose when you first open the app, and switch anytime in Settings. The Visual Editor is part of Inkiostro Pro, free for 7 days.
• The Markdown editor is still here, complete and untouched. 1.12.1 Oct 5 Markdown or visual: now you choose how you write.

• The Visual Editor: headings, bold, lists, tables and formulas take shape as you type, like in a word processor. Format with the bar above the keyboard.
• Your file stays Markdown. Only the paragraphs you touch are rewritten, with the same signs you would use yourself; everything else stays exactly as it was.
• Tables edited cell by cell, formulas and Mermaid diagrams drawn in place, images pasted straight in.
• Choose when you first open the app, and switch anytime in Settings. The Visual Editor is part of Inkiostro Pro, free for 7 days.
• The Markdown editor is still here, complete and untouched. 1.12.0 Oct 3 What you write is yours — now you can take it with you.

• The preview comes back where you left it. Free for everyone.
• A professional ePub: real chapters, cover, ISBN, and a check for what a store would reject.
• A book made of many files: one chapter per file, out as a single ePub.
• Backups of your whole library, as a zip you can open even without Inkiostro. Keep the app open while it runs.
• Also: a chapter separator, a Publishing panel in Settings and a new toolbar. 1.11.1 Sep 26 What you write is yours — now you can take it with you.

• The preview comes back where you left it. Free for everyone.
• A professional ePub: real chapters, cover, ISBN, and a check for what a store would reject.
• A book made of many files: one chapter per file, out as a single ePub.
• Backups of your whole library, as a zip you can open even without Inkiostro. Keep the app open while it runs.
• Also: a chapter separator, a Publishing panel in Settings and a new toolbar. 1.11.0 Sep 25 We’ve improved version control and file previews for external folders.
We also fixed a few other minor issues... just to make inkiostro even better.

Thanks to everyone for using inkiostro and for your feedback. 1.10.1 Sep 11 The preview used to have eleven styles. It has twenty-seven now, and the sixteen new ones are not sixteen more colour schemes: they change how the page is set. Manuscript justifies the text and indents the first line of every paragraph, the way a novel does. Report numbers your headings — 1, 1.1, 1.1.1 — so a document can be cited by section. Typewriter is monospaced and double-spaced, which is still the format some publishers ask for. Book centres the chapter titles and drops a large initial into the first paragraph. The eleven you already had are still there and still free. 1.10.0 Sep 5 Your iPhone now opens documents to read them.

A phone is where you catch up on something you wrote, not where you sit down to write it. Until now Inkiostro treated it like a small desk: every document opened straight into the editor, keyboard up, formatting bar in place. Now it opens as a page — laid out, readable, quiet. Writing is one tap away on the Write button, exactly where you'd reach for it.

If you're one of the people who does write on a phone, say so once and it stops asking: Settings, Open documents in, Editing. Your iPhone and your iPad remember it separately, so the iPad can stay on Editing while the phone opens things to read.

The bar along the bottom changed job to match. Instead of word counts and undo, it's the five things you actually do with a document in your hand: Write, Find, Outline, History, Share. Sharing is two taps now — Share, then the format. Word counts and undo come straight back the moment you start writing.

Find works on the page you're reading, not on the Markdown behind it. Matches light up where they sit, and after the last one it starts again from the first.

What you opened last is now at the top of the file list, so coming back to yesterday's document doesn't mean walking down three folders again. If you'd rather start at your folders, it turns off in Settings.

On iPad, more of the keyboard finally does something. Links, images, lists, tables and block quotes all have shortcuts, and so do the outline and version history. The system's undo-and-paste strip above the keyboard is gone — its buttons were already in ours — which gives the text about fifty points back, and in landscape you notice.

Also on iPad, the outline and the statistics sit beside the text instead of covering it. Jumping to five headings no longer means opening and closing a panel five times.

The app is lighter on the eyes everywhere. Four of the six colours used to be brown — the background, the text and the borders as well as the accent. The brown is the accent now, and nothing else. Heading marks in the editor are no longer painted in it either, and the page you write on always stays paper, whichever theme you're using.

On the Mac, your recent documents have their own section in the sidebar, and opening a file from the Finder no longer starts the app with the file list squeezed against the text.

Fixed: opening a .md file from the Files app with "Open in Inkiostro" did nothing at all on iPhone. It now opens the document and edits the original file where it lives. The same was true of "Open External File" in the sidebar menu. Thank you to the reader who wrote in about this one. 1.9.1 Sep 1 Your iPhone now opens documents to read them.

A phone is where you catch up on something you wrote, not where you sit down to write it. Until now Inkiostro treated it like a small desk: every document opened straight into the editor, keyboard up, formatting bar in place. Now it opens as a page — laid out, readable, quiet. Writing is one tap away on the Write button, exactly where you'd reach for it.

If you're one of the people who does write on a phone, say so once and it stops asking: Settings, Open documents in, Editing. Your iPhone and your iPad remember it separately, so the iPad can stay on Editing while the phone opens things to read.

The bar along the bottom changed job to match. Instead of word counts and undo, it's the five things you actually do with a document in your hand: Write, Find, Outline, History, Share. Sharing is two taps now — Share, then the format. Word counts and undo come straight back the moment you start writing.

Find works on the page you're reading, not on the Markdown behind it. Matches light up where they sit, and after the last one it starts again from the first.

What you opened last is now at the top of the file list, so coming back to yesterday's document doesn't mean walking down three folders again. If you'd rather start at your folders, it turns off in Settings.

On iPad, more of the keyboard finally does something. Links, images, lists, tables and block quotes all have shortcuts, and so do the outline and version history. The system's undo-and-paste strip above the keyboard is gone — its buttons were already in ours — which gives the text about fifty points back, and in landscape you notice.

Also on iPad, the outline and the statistics sit beside the text instead of covering it. Jumping to five headings no longer means opening and closing a panel five times.

The app is lighter on the eyes everywhere. Four of the six colours used to be brown — the background, the text and the borders as well as the accent. The brown is the accent now, and nothing else. Heading marks in the editor are no longer painted in it either, and the page you write on always stays paper, whichever theme you're using.

On the Mac, your recent documents have their own section in the sidebar, and opening a file from the Finder no longer starts the app with the file list squeezed against the text.

Fixed: opening a .md file from the Files app with "Open in Inkiostro" did nothing at all on iPhone. It now opens the document and edits the original file where it lives. The same was true of "Open External File" in the sidebar menu. Thank you to the reader who wrote in about this one. 1.9.0 Sep 1 Version history can now be searched. You remember writing a sentence — about a character, a decision, a name — and you remember deleting it. Until now the only way back was opening versions one at a time until you got lucky. Now you type the phrase and the history tells you which versions contain it, shows you the line in each one, and tells you the day it disappeared.

Comparisons are down to the word. Change one sentence inside a long paragraph and you used to get the whole paragraph in red beside the whole paragraph in green, left to spot the difference yourself. Now only what actually changed is highlighted, inside the line, where you can read it.

You can name a version and keep it. Call one "sent to my editor" and it stops ageing out — it stays as long as the document does, while everything around it prunes itself as usual.

You can put any two versions side by side, not just a version against what you have today. Last Tuesday against last month, if that's the question.

There's a line across the top of the history now, showing the document growing over time. It's the fastest way to find the day something big happened — the afternoon a chapter went in, or the morning it came out.

And long documents no longer defeat the comparison. Past roughly two thousand lines the old one gave up and showed the entire document as deleted and rewritten, which is worse than useless on exactly the files that matter most. That limit is gone.

The rest of this release:

• Your history can leave. Export it as a folder with one file per version, or as a single document with the versions one after another. It's the answer to a fair question — what happens to all this if I stop using the app.

• A panel of its own, under Settings. It shows how much space your history takes and across how many documents, lets you choose how long versions are kept, turns the word-by-word comparison off if you'd rather see whole lines, and can delete every history at once if you want the space back. 1.8.1 Aug 26 Version history grew up. It used to offer one thing: put the whole document back the way it was. That is the right tool for a disaster and the wrong one for a Tuesday, when what you actually want is the paragraph you deleted this morning.

Now the history shows your changes one at a time, and each of them has its own button. Tap it and that change is undone — the deleted paragraph comes back, the rewritten sentence returns to how it read, and everything you did afterwards stays exactly where it is.

The screen around it changed too. Versions are grouped by day, so "this morning" is something you can find instead of counting backwards through timestamps. Each one says how much it changed before you open it. The unchanged text between one change and the next is folded away, because in a comparison what matters is what moved.

Restoring is no longer a one-way door: before anything is replaced, what you have right now is saved as a version. If you bring back the wrong paragraph, the paragraph you had is one tap away.

Versions also follow your document now. Rename it, move it to another folder, let the app rename it for you from its first heading — the history comes along. Before, it silently started over.

And the count is visible while you write: a small clock in the bar above the keyboard tells you how many versions you have. It was the strongest thing in the app and nobody knew it was there.

The rest of this release:

• Inkiostro is in the share sheet. Most writing starts somewhere else — a thought in Notes, a paragraph on a web page, a line in a scratchpad. Share it to Inkiostro and it becomes a document, with a title already filled in and the text ready to edit. Come back to the app and it is open, waiting.

• Tables, rebuilt. Pick the size by dragging across a grid instead of tapping two counters, and the table arrives with real headings already in place — type over the first, press Tab for the next. Tab keeps moving cell to cell and adds a row at the end, the columns realign as you type, and a Table menu adds or removes rows and columns and sets each column's alignment. The same engine on Mac, iPhone and iPad, so a table built on one reads right on the other.

• Steadier on iCloud. Every read, save, rename and delete now announces itself to iCloud before touching the file. Fewer documents that vanish for a moment, and no more quiet overwrites while a file is syncing.

• Inkiostro finally wears its own colours — the warm sand of the app's name, instead of the green it inherited from its old one. If you preferred the green, it is still here: Settings › Theme › Lettera Classic.

• Formatting floats right above the keyboard, where your thumbs already are. If you liked the old fixed bar, Settings › Editor › Formatting Bar puts it back.

• Show invisible characters. Proofreading a draft? Turn on invisible characters in Settings › Editor to spot extra spaces, tabs and paragraph breaks right on the page.

• Menus and buttons have been read through in all fourteen languages. A few of them said things nobody meant — in German the app offered to sell you a share instead of sharing your document. 1.8.0 Aug 20 Start writing straight away: new documents open instantly and name themselves from your first heading.
Markdown formatting now shows up the moment a document opens, on every device.
The table of contents comes to iPhone and iPad.
Nested lists keep their indentation, tables behave under Tab, and you can format several lines at once.
Tags really group your documents, and filtering by tag no longer hides your folders.
Exported EPUB files carry their images, and exported HTML carries its font. 1.7.3 Aug 8 Documents are unlimited now — for everyone. And you can try Pro before paying for it.

• Try Pro free for 14 days. No subscription and no payment: when it ends you go back to the free version, and your documents stay yours.
• No more 10-file limit. Write as much as you want, on the free version too.
• Import is free: bring your Markdown library over from any other app.
• The daily writing goal has no cap anymore.
• Version history (Pro): Inkiostro saves versions of your document while you write. Compare them line by line and restore any of them.
• Clearer names: the 11 preview styles are called "preview styles" and are all free. "Themes" now means only the look of the app.
• Inkiostro runs on iOS 18 and later, so it works on far more iPhones and iPads.
• New: a Markdown cheat sheet with 46 pieces of syntax always at hand — beside the editor on iPad, as a panel on iPhone.
• Four ways to see your files: large cards with a three-line preview of the text, cards, a two-line list or a compact list. Switch from the toolbar.
• Fixed: a few texts showed up in Italian no matter which language you use.

To everyone who bought Pro and supported this app: thank you. You made this version possible. 1.7.0 Aug 6 Sync that keeps up with you

• Changes saved on another device now appear right away, without closing and reopening the app
• Inkiostro keeps an eye on the file you're editing and pulls in the latest version as soon as iCloud has it

Always know your work is safe

• A save indicator shows when the document is being saved, when it was last saved, and whether there are unsaved changes
• With an external keyboard, press Cmd+S to save whenever you want

Daily writing goal

• The word counter now shows your progress toward your daily goal while you write

Clearer purchases

• Restoring a purchase now tells you what happened, including when there's nothing to restore
• Pro is recognized reliably at launch, so features are never locked by mistake

Polish & fixes

• Refreshed onboarding, which you can bring back any time from Settings
• The Focus mode button now has its own icon, no longer identical to the preview one
• Various stability improvements 1.6.1 Jul 23 Lettera has a new name: Inkiostro. Same app, same documents — a fresher identity and a more refined design.

Side-by-side live preview
• On iPad and Mac, show the live preview right next to the editor and watch it update as you type
• Auto-scroll keeps them in sync: as you scroll the editor, the preview follows along to the same spot

Full screen, distraction-free
• A new full-screen mode hides the toolbars and bars so only your text and keyboard remain — perfect for iPad in landscape
• Tap to enter, tap again to exit

Spacing, exactly how you like it
• Adjust line spacing and the space around paragraphs and headings
• The same settings apply to both the editor and the preview, so what you see is what you get

Line numbers, your way
• Turn the line-number gutter on or off whenever you like, from Settings

Faster, smoother editing
• A rebuilt, lighter editor: faster file opening and snappier typing, even in long documents
• Redesigned editor top bar with one-tap new document and close-all-tabs, plus theme-aware colors

Polish & fixes
• Various refinements and stability improvements 1.6.0 Jul 16 An update focused on organizing your documents.

Move & Copy • Move or copy files and folders into another folder, right from the menu (long-press an item or tap •••) • Pick the destination from all your folders, including nested subfolders • Tags and colors are kept when you move a file

Open & Import • Open external files directly in-place from anywhere on your device • Import files into your current folder with automatic resolution for duplicate names

Redesigned toolbar • Rebuilt to be faster and more reliable, on iPhone, iPad and Mac • The commands you use most — new file, sort, view and settings — are always within reach • The create button stays accessible even inside folders

Optional line numbers • Show or hide the line number column anytime, from Settings

• Stability improvements 1.5.2 Jun 28 Small update, two handy additions.

Complete in-app help
• Brand-new Help section that covers every feature in the app
• Find out how the editor, fonts, themes, syncing and more work, all from inside Lettera

Open external files
• Open any Markdown file straight from Finder with "Open With → Lettera"
• Great for files that live outside your usual locations

• Stability improvements 1.5.1 Jun 23 Make Lettera yours with 20 beautiful themes — plus a sharper Mac experience.

• App Themes (PRO): Restyle the entire app with 20 curated light and dark themes — Dracula, Nord, Solarized, Catppuccin and many more.
• On iPad now you can edit multiple files at time with tabs
• Adjustable Preview: Zoom the preview text in and out to read comfortably at any size.
• Redesigned Mac Tabs: Cleaner Safari-style document tabs that follow your theme.
• Refined Mac Editor: A clearer toolbar and Markdown syntax colored with your theme accent.

As always: no subscription. Buy once, own forever. 1.4.0 Jun 22 Lexend fonts, custom typography, advanced stats, Sepia and Solarized themes, and daily writing goals!

• Lexend & Custom Fonts: Write in the highly readable Lexend font or choose any font installed on your device.
• New Preview Themes: Beautiful Sepia, Solarized, and Nord preview designs for a gorgeous reading experience.
• Daily Writing Goals: Set daily word count or time goals with a beautiful progress ring (just like Apple Fitness).
• Advanced Stats: Real-time estimated reading time, speaking time, and Flesch readability score.
• Pro PDF Export: Adjust margins and add professional headers/footers with dates and page numbers.
• Keyboard Toolbar: Rapid markdown editing bar above the iOS keyboard for faster formatting.
• Improvements: Smoother Focus and Typewriter writing modes, stability enhancements. 1.3.0 May 28 • Color Labels: Color-code any file or folder. Folders show a tinted icon; files show a colored dot in the list.
• Tags: Add custom tags, filter by one or more tags simultaneously.
• Group by Tag: New sort option that groups your entire file list by tag.
• File Info Panel: Tap ··· for metadata, tags, and color label in one sheet.
• Compact List View: Denser layout with tags visible in each row.
• Redesigned Interface: Refreshed look with improved navigation and more accessible actions. 1.2.0 May 12 • Focus & Typewriter: New modes for maximum concentration.
• External Folders: Manage any folder from your iPad or Mac.
• Smart Tables: Revolutionized table editing with automatic alignment.
• Pro Code Blocks: Advanced support for programming languages.
• Exclusive Themes: Introducing 'Classic' and 'Terminal' themes.
• Full Localization: Now available in 13 languages!
• Bug Fixes: Improved sync stability and minor error corrections. 1.1.0 Mar 4 minor bug fix 1.0.2 10/08/2025 Minor bug fixes 1.0.1 09/28/2025 1.0 09/25/2025