Comparison

Nota6 vs OnBoardAI

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

Head to head
About

Nota6

Features
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Reader-first Markdown app for the AI era — with a built-in Reference Library so it's useful the moment you open it. BUILT-IN LIBRARY (12 references, all offline) The welcome screen has a "Browse Library" button. Tap it and you have 12 curated documents available immediately, in English and Simplified Chinese: • Markdown / GFM syntax references • Mermaid Diagram Gallery — 10 diagram types (flowchart, sequence, class, state, ER, gantt, pie, mindmap, timeline, git graph), each with source + rendered output • KaTeX Math Reference — symbols, operators, matrices, common formulas • Code Highlighting Gallery — Swift, Python, TypeScript, Go, Rust, SQL, and more (190+ languages bundled) • Reading AI-Generated Markdown — four shapes of agent output and how to read each • CLAUDE.md & AGENTS.md spec — how AI-instruction files work • README Patterns, Design Doc & RFC Patterns • Nota6 Tips & Tricks, iPad Keyboard Shortcuts, Themes Showcase These aren't placeholders — they're useful reading material for anyone who works with AI coding assistants and the .md files they produce. WHAT MAKES IT DIFFERENT FROM A BROWSER • Mermaid diagrams, KaTeX math, syntax-highlighted code, all rendered offline. No network requests during rendering. Safari Reader can't do Mermaid; Nota6 can. • Auto-refresh on file change with smart scroll anchoring: when an external editor rewrites the file, the preview re-renders in place and stays at the same heading even if the document length shifts. • Open files from anywhere via the system share sheet, Files, iCloud Drive, or the "Open in Nota6" action. iOS-NATIVE INTEGRATIONS • Shortcuts / App Intents: "Open Markdown File" and "Export Markdown as HTML" are first-class Shortcuts actions. Automate from Siri or your iPad keyboard. • iCloud sync: your theme, font, width, and Custom-theme colors follow you across iPhone, iPad, and Mac. • Workspace full-text search (āŒ˜ā‡§F) across an entire folder of .md files. • Bookmark self-heal: if AI tooling renames or moves files in your workspace, Nota6 reattaches by content fingerprint instead of breaking. READING EXPERIENCE • Quick Edit: switch to Source, correct raw Markdown, and save with Command-S on a hardware keyboard. Nota6 preserves the original encoding, BOM, and line endings, and warns before overwriting external changes. • 5 themes: GitHub Ā· Paper Ā· Notion Ā· Terminal Ā· Custom. Custom lets you pick body + monospace fonts and 4 colors (background, text, heading, code block) right inside the app. • 4 font sizes, 3 reading widths, Light / Dark / Auto appearance. • Outline panel with live filter and scroll-synced active heading; floating breadcrumb when the outline is closed. • Per-file reading-progress dots in the workspace sidebar. • Click-to-zoom for Mermaid diagrams and images; long-press to Copy or Save as PNG. iPAD HARDWARE KEYBOARD Full shortcut set: ⌘O Ā· ā‡§āŒ˜O Ā· ⌘F Ā· ⌘P Ā· ⌄⌘O Ā· ⌘R Ā· ⌘[ / ⌘] Ā· ⌘W. Press-and-hold ⌘ for the discoverability HUD. EXPORT PDF or self-contained HTML via the system share sheet — straight to Files, Mail, Slack, Notion, or any other destination. PRIVACY No analytics. No third-party SDKs. No network requests unless the document itself references remote images. Rendering libraries (KaTeX, Mermaid, highlight.js) are bundled offline. English + Simplified Chinese.

About

OnBoardAI

Features
Read full description

OnBoard is a personal intelligent space that runs completely locally on your device. Powered by Google's Gemma 4 language model and LiteRT-LM technology, the app delivers instant responses without relying on third-party servers, cloud computing, or subscriptions. Everything you write, record, or upload stays exclusively on your iPhone. MAIN FEATURES: • Local Text Chat: A fully featured intelligent assistant that speaks and thinks offline. • Image Analysis: Upload photos from your gallery or take pictures with your camera — the AI will help identify objects, read text, or analyze details. • Voice Notes and Queries: Local transcription converts your voice into text and instantly passes it to the model for analysis. • Flexible Settings: Control the "creativity" of responses by adjusting Temperature, Top-P, Top-K, and manage the context window size. OPTIONAL WEB SEARCH: Need current news, exchange rates, or the weather? Simply connect your own search service API key in the settings. SECURITY AND PRIVACY: The app does not collect, store, or share your conversations. The model is integrated directly into the app and utilizes the power of your iPhone's GPU. Your thoughts, ideas, and diary entries belong to you alone.

Screenshots

Nota64 screens
OnBoardAI4 screens

Verdict

The call

The clearest difference is device support: Nota6 at 3 against OnBoardAI's 1. Nota6 also leads on iOS requirement (17.0 vs 26.3). On price, ads and in-app purchases there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences Ā· 4 level
Nota6 versus OnBoardAI: the parameters behind the verdict, then further details
ParameterNota6OnBoardAI
PriceFreeFree
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.0 — better26.3
Further details — not scored
Size11 MB3.4 GB
Age rating4+12+
Developer笑天 刘Anatolii Kvasov

In-app purchases

None

Nota6

No in-app purchases

None

OnBoardAI

No in-app purchases

Questions

Is Nota6 free?
Nota6 is free to download, with no in-app purchases.
Is OnBoardAI free?
OnBoardAI is free to download, with no in-app purchases.
Do Nota6 or OnBoardAI have ads?
Neither Nota6 nor OnBoardAI shows ads.

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