Ki vs Aino
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ki
Capture, organize, and connect all your learning in one place. This app allows you to save notes, links, code snippets, and ideas, then link them together to build a web of knowledge. Find anything fast with full-text search and visual knowledge graphs.
- Capture notes, links, quotes, code snippets, and ideas
- Organize with color-coded tags and custom topics
- Connect notes with bidirectional linking
- Visualize knowledge with interactive graphs
- Full-text search and saved searches
- Quick capture via floating button and widgets
- Review workflow for managing notes
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Ki-note is your personal knowledge base. Capture, organize, and connect everything you learn — all in one place. CAPTURE EVERYTHING • Notes, links, quotes, code snippets, ideas, and references • Quick capture with a floating + button from anywhere in the app • Save source URLs and titles for web content. You can share links from Safari to Ki-note! • Tag code snippets with their programming language (Swift, Python, JavaScript, TypeScript, Go, Rust) • You can insert notes, text, links, into Ki-notes using the Share functionality • You can insert notes using voice in the Control Center widget or using a shortcut with Siri ORGANIZE YOUR WAY • Tags — color-coded labels to categorize your notes • Topics — group related notes under a single theme with custom icons • Smart Collections — automatic filters like Inbox, Favorites, Reading Queue, Unreviewed, Quotes, Ideas, Links, Untagged, and Unlinked • Configurable Quick Access dashboard on the home screen • Pin, favorite, and archive notes • Review workflow — track notes from Inbox → Unreviewed → Reviewing → Reviewed CONNECT YOUR KNOWLEDGE • Link notes together to build a web of ideas • Bidirectional linking — see which notes link to and from each note • Interactive Knowledge Graph — visualize all your notes and their connections • Customizable graph settings for colors, forces, and display options FIND ANYTHING FAST • Full-text search across all notes • Save frequently used searches for quick access • Browse by tags and topics • Filter by note type, status, or collection BUILT FOR YOU • 100% free — no ads, no subscriptions, all features unlocked • Local-first — your data stays on your device with SwiftData • Localized in 6 languages: English, Spanish, French, German, Italian, and Portuguese • Light and dark mode with customizable themes • Optional one-time tip to support development Ki-note is designed for students, researchers, developers, writers, and anyone who wants to build a personal knowledge base that grows with them.
Aino
A fast, focused Markdown workspace for building a personal knowledge system. Connect ideas and turn notes into a structured, evolving network. Ideal for capturing thoughts, organizing knowledge, or building your second brain with a clean and powerful interface.
- Markdown-first editing
- Connected notes
- Structured thinking
- Focused experience
- Personal LifeOS
- Link ideas
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Aino is a fast, focused Markdown workspace for building your personal knowledge system. Write in pure Markdown, connect ideas, and turn your notes into a structured, evolving system. Whether you're capturing thoughts, organizing knowledge, or building your second brain, Aino gives you a clean and powerful space to think. KEY FEATURES • Markdown-first editing Write naturally in Markdown with a fast and minimal editor. • Connected notes Link your notes together and build a network of ideas. • Structured thinking Turn scattered notes into a coherent system. • Focused experience No clutter. Just writing, thinking, and connecting. • Your personal LifeOS Aino grows with you as your knowledge system evolves. Aino is designed for people who think deeply and write often. Start building your second brain today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aino.md/legal/privacy
Screenshots
Verdict
The clearest difference is monetization model: Ki at free against Aino's freemium. Ki also leads on update cadence (every 2 days vs every 4 days). Aino's advantage is iOS requirement (15.1 vs 18.6). On price, rating, ratings volume and ads 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
Both are free to download. Ki sells 1 one-off in-app purchase and Aino sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Ki against 5.0 for Aino. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Ki ships an update every 2 days, Aino every 4 days. Both last shipped on September 29, 2026.
| Parameter | Ki | Aino |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 days — better | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Casanueva | 宜丙 林 |
Customer experience
Ki
Aino
In-app purchases
Ki
- Buy me a coffee$0.99
Aino
- Aino Pro Monthly7 Days trial$2.991 Month
- Aino Pro Founder Yearly7 Days trial$19.991 Year
- Aino Pro Yearly7 Days trial$24.991 Year







