People, place, date, time & topic filters
Onuri recognises useful context as you write and lets you narrow your history from the home screen without creating manual tags.
Private notes app · Automatic second brain
Write naturally. Find everything again.
Onuri: Notes & Life Tracker is a private notes app for iPhone that automatically connects people, places, dates, times and topics as you write. Search naturally, filter your history in one tap, follow connected terms and rediscover related entries without folders or manual tagging.
Download Free on App Store
On your computer?Scan with your iPhone
See how Onuri works
On your computer?Scan with your iPhone
See how Onuri works
Unlimited notes · Smart filters · Related entries · Light & dark mode · Private iCloud sync · No ads or tracking · iOS 17.6+
Onuri recognises connections as you write
Tuesday, late spring
Coffee with Mina near Gion — we ended up talking about the temple we found in Kyoto back in spring 2021. Should send her that photo.
ConnectionsMinaKyototemple2021
See exactly how Onuri works →
A visual walkthrough from writing your first note to connections, search and Insights.
Onuri in action
Write naturally. Let the connections emerge.
Filter your writing by people, places, dates, times and topics, follow connected terms, open related entries, and personalise Onuri with new themes and dark mode.
Unlimited notesFree features
Data not collectedPrivacy by design
iCloud syncAcross Apple devices
TXT & CSV exportYour writing stays yours
Free features
A notes app that gets more useful the more you write.
Every note becomes part of a connected collection that is easy to explore, helping you rediscover ideas, memories and moments over time.
Search & connected terms
Search your writing with text, combine recognised filters, and follow connected terms that commonly appear around the same notes.
Related entries
Open a note and see other entries with similar meaning, helping older thoughts resurface even when the wording is different.
Light & dark mode
Use Onuri in light or dark appearance while keeping the same calm, focused writing experience.
Unlimited writing
Create unlimited notes and journal entries with automatic draft saving, private iCloud sync, and TXT or CSV export.
Optional Premium
Premium adds expanded Insights, Ongoing and Done statuses with filtering, five additional themes, light and dark theme variants, and matching alternate app icons.
No folders required
The structure appears as you write.
There is nothing to tag or organise manually. Instead of forcing every thought into a folder, Onuri builds useful paths through what you have already written.
Follow a connection
Japan→Kyoto→temple→found it ✓
Search directly, or move through related people, places and topics until the note you remember comes back into view.
Built for privacy
Private by design.
Write freely, knowing your thoughts stay yours.
- No ads
- No analytics
- No tracking
- Private iCloud sync
Onuri Premium
Discover patterns hidden within your writing.
Premium unlocks expanded Insights into momentum, streaks, recurring themes, people and place patterns, semantic clusters and strongest connections. It also adds Ongoing and Done statuses with filtering, five additional colour themes, light and dark theme variants, and matching alternate app icons.
Explore Onuri
Choose the note-taking approach you want to learn about.
These focused guides explain the parts of Onuri people most often look for.
Life Tracker AppUse Onuri to capture the people, places, dates, ideas and everyday moments that make up your life.
100 Life Tracking IdeasBrowse practical examples of people, places, projects, decisions and everyday moments you may want to remember.
Automatic Second BrainHow Onuri connects your notes automatically as you write.
Folderless NotesA note-taking workflow without rigid folders or manual organisation.
Private Notes App for iPhoneOnuri as a private, searchable notes app with iCloud sync.
Resource Hub & IndexPublished essays, architecture guides, and social profiles.
From the developer
Writing about better note-taking.
Why traditional hierarchies and folder trees can get in the way of capturing genuine ideas.
Why folderless note-taking can reduce filing overhead and help useful connections emerge from ordinary writing.
FAQ
Questions about Onuri
What is Onuri: Notes & Life Tracker?
Onuri is a private notes app for iPhone that automatically connects the people, places, dates and ideas in your writing as you type. There are no folders or manual tags to maintain.
What is a second brain app?
A second brain is a digital system for storing and retrieving ideas, notes and memories. Onuri approaches this by creating useful connections automatically as you write.
Is Onuri free to use?
Yes. Free features include unlimited notes and journal entries, text search, people/place/date/time/topic filters, connected terms, related entries, automatic draft saving, light and dark mode, iCloud sync and TXT or CSV export. Premium adds expanded Insights, Ongoing and Done statuses, additional themes and matching app icons.
Does the Onuri app collect my data?
Onuri's App Store privacy information states that data is not collected. The app has no ads, analytics SDKs or tracking, and uses your personal iCloud account for sync across Apple devices. The public website uses optional Google Analytics only after consent.
Is Onuri an AI second brain?
Onuri uses private on-device intelligence to recognise and connect information in your writing. Its core experience does not depend on uploading your notes to a cloud AI service.
How is Onuri different from folder-based note taking?
Instead of asking you to decide where every note belongs, Onuri recognises people, places, dates, times and ideas throughout your writing so you can search and follow connections later.
What devices does Onuri support?
Onuri requires iOS 17.6 or later and uses iCloud to sync across your Apple devices.
Write freely
Instead of asking you to track your life, Onuri helps you notice it.
A private notes app that quietly connects your writing so the people, places, ideas and moments in it are easier to rediscover.
Download Onuri FreeOn your computer?Scan with your iPhone
Complete guide
From note-taking app to second brain
Read the complete guide for one structured overview of note-taking apps, second brains, search, privacy, iCloud and automatic connections. Read the complete guide →
Not sure how you like to take notes? Compare 10 note-taking methods and take the quiz →