Notes that connect themselves.

Your words, quietly organised

You just write naturally, and Onuri quietly builds the structure for you, acting as an automatic second brain so everything you've ever written becomes easy to rediscover. Trying to remember a temple you visited in Kyoto five years ago? No digging through categories — tap Japan → Kyoto → temple → found it.

• Automatic Connections: Recognises people, places, dates, times and topics as you write
• Fast Full-Text Search: Instant filtering by entities and connected themes
• Free Note Taking: Unlimited notes and journal entries in the free tier
• 100% Private: No ads, no analytics, no tracking — App Store label is "Data Not Collected"
• iCloud Sync & Export: Native Apple sync with full TXT and CSV export options
• Insights & Connections: Onuri Premium (€2.99) reveals recurring themes and relationship patterns
• Multilingual Support: Available in English, Japanese, and Korean

If you love the depth of linked-note workflows but hate manually typing wiki-style links — or if you've outgrown rigid folder structures in Apple Notes — that's the exact gap Onuri is built for. Launched on the App Store in July 2026 for iOS 17.6+.

Download Onuri on App Store · Launch discussion on r/SideProject · Privacy policy · Terms

Frequently asked questions

What is Onuri?

Onuri is a free private notes app, automatic second brain, and life tracker for iPhone that automatically connects the people, places, dates and ideas in your writing as you type. There are no folders or manual tags — the app builds the structure for you, so everything you've written is easy to rediscover through search and connections.

Is Onuri an AI second brain app?

Onuri acts as an automatic second brain on iPhone using fast, private on-device intelligence. Instead of requiring complex manual wiki links or uploading your notes to cloud AI servers, Onuri automatically links people, places, dates, and ideas locally as you type.

Is Onuri a free notes app for iPhone?

Yes. Onuri is free to download on iPhone with unlimited note taking, zero ads, and private iCloud sync.

Does Onuri collect my data?

No. Onuri's App Store privacy label is "Data Not Collected". There are no ads, no analytics and no tracking. Notes sync across your Apple devices through your personal iCloud account, and you can export everything as TXT or CSV at any time.

How is Onuri different from Obsidian or Apple Notes?

Obsidian links notes when you manually type wiki-style links. Onuri creates the connections automatically as you write, recognising people, places, dates and topics with no setup. Compared with Apple Notes, Onuri replaces folder organisation with automatic connections and connection-based search.

Who makes Onuri?

Onuri is built by an independent developer based in Dublin, Ireland. It is designed around privacy: no ads, and syncing only through the user's own iCloud account.

Is Onuri available on Android?

Not yet — Onuri is currently iPhone-only (iOS 17.6 or later). Android versions may follow if there is enough interest.