Comparison

Key Prompt vs Marked

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Key Prompt

Read full description

KeyPrompt: Your AI Prompt Library on Every Keyboard Unlock the full potential of AI without the friction of constant copying and pasting. KeyPrompt is a custom iOS keyboard extension that stores your most-used AI prompts and makes them available instantly within any app—whether you are in Messages, Mail, Notes, or Slack. Features: - Custom Keyboard Integration: Input complex prompts into any text field with a single tap. No more app-switching. - Organized Library: Group your prompts into categories like Professional Communication, Creative Writing, Learning, and Mental Wellness. - Create Your Own: Easily add, edit, and save your own custom prompts to fit your unique workflow. - Quick-Access Templates: Start immediately with built-in templates for instant meal planning, travel itineraries, email reformatting, and more. - Seamless Organization: Use a clean, intuitive interface to manage your categories and keep your "Mental Wellness" prompts separate from your "Professional" ones. Whether you're a student, a professional, or an AI enthusiast, KeyPrompt bridges the gap between your ideas and the AI tools you use every day.

About

Marked

This app offers a reading-first experience for Markdown documents, presenting them with classic typography and customizable themes. It also includes a live syntax highlighting editor for quick edits and navigation features like a table of contents.

Highlights
  • Book-like reading experience
  • Customizable themes and typography
  • Live Markdown syntax highlighting
  • Built-in plain-text editor
  • Auto-generated table of contents
  • File navigation and search
Features
Read full description

Marked is a Markdown reader and editor designed first as a reading app — think Apple Books for your .md files. Open any Markdown document from Files or iCloud Drive and read it with the calm of a book: classic typography, generous margins, justified text with automatic hyphenation, and Light, Sepia and Dark themes. A READING-FIRST EXPERIENCE • Three reading themes: Light, Sepia and Dark. • Nine curated typefaces: system serif, New York, Georgia, Palatino, Times New Roman, Helvetica Neue, Avenir Next, Iowan Old Style and Charter. • Adjustable font size, line spacing and horizontal margins. • Justified text with automatic hyphenation for a book-like rhythm. • Native rendering of headings, lists, quotes, code blocks, links and tables. • Styled blockquotes with accent bar, soft background tint and a decorative quote glyph. • Wrap-first tables that fit cell text to the screen and only scroll horizontally when wrapping is not enough. SYNTAX HIGHLIGHTING • Fenced code blocks are highlighted with automatic language detection (highlight.js via HighlighterSwift). • The editor colours Markdown markup live — headings, emphasis, code spans, links and lists — without getting in the way of plain-text editing. QUICK EDITING • Built-in plain-text editor with in-place save to the original file. • New documents open straight into the editor. • Jump to any line directly from the table of contents or search results. • Debounced highlighting keeps large files responsive while typing. NAVIGATION • Auto-generated table of contents from the document's headings. • In-document search: per section in reader mode and per line in editor mode. • Recent files list with per-document reading position and progress, Apple Notes–style file count under the title. FAST AND SMOOTH • Documents open asynchronously so the UI never blocks on large files. • Theme and font changes reuse the parsed document and existing section views instead of rebuilding from scratch. • Smart subview reuse keeps scrolling fluid in long documents. WORKS WITH YOUR FILES • Opens .md, .markdown, .mdown and .mkd files from Files, iCloud Drive and "Open with…". • Create new Markdown documents from inside the app. • Security-scoped bookmarks remember where each file lives, so recents keep working after relaunch. PRIVACY BY DESIGN • Everything runs on your device. Marked has no servers. • No accounts, no telemetry, no advertising, no tracking. • Your files stay exactly where you keep them — the app only opens them. Ideal for reading notes, technical documentation, project READMEs, long-form articles or books written in Markdown — and for making quick edits without leaving the reading flow.

Screenshots

Marked4 screens

Verdict

The call

The clearest difference is price: Marked at Free against Key Prompt's $0.99. Marked also leads on device support. Key Prompt's advantage is iOS requirement (17.0 vs 26.0). On in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Marked is free to download; Key Prompt costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 6 level
Key Prompt versus Marked: the parameters behind the verdict, then further details
ParameterKey PromptMarked
Price$0.99Free — better
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Ads—No
In-app purchasesNoNo
Monetization—Free
Devices—iPhone, iPad — better
Requires iOS17.0 — better26.0
Further details — not scored
Size4 MB4 MB
Age rating4+4+
DeveloperHIROSHI TOKAKUTreze

In-app purchases

None

Key Prompt

No in-app purchases

None

Marked

No in-app purchases

Questions

Is Key Prompt free?
Key Prompt costs $0.99, with no in-app purchases.
Is Marked free?
Marked is free to download, with no in-app purchases.

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