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- FAQ
- Glossary
- White papers
- The Catchlight encryption architecture
- Who might read your notes, and what each of them can actually do
- How to tell whether a notes app is actually private
- Protecting your notes without Advanced Data Protection
- What AI features cost you in a notes app
- Sync with no server and no account
- The one star test
- Support
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Journal
- Journal home
- Storage was solved, finding it again wasn't
- What happens to your notes when the app shuts down
- What thousands of one star reviews taught me about notes apps
- The best encrypted and secure notes apps (2026)
- How I actually use it
- You don't need a note taking system
- Your phone is a casino, your notes app doesn't have to be
- What open source actually buys you in a notes app
- How iPhone locks a note, and what the lock leaves out
- End-to-end, zero-knowledge and on-device aren't the same
- Who holds the key, and why it's the whole game
- What encryption actually is, in plain words
- Can Apple read your notes?
- The best private notes apps with no account (2026)
- The UK quietly lost Advanced Data Protection. Here's what it means for your notes
- What zero-knowledge actually means for your notes
- One Take. Why notes, tasks and reminders belong together
- Your notes shouldn't need an account
- Apple Notes is great, until it isn't
- The quiet case for offline-first
- How I designed the Iris
- A password manager for your thoughts
- Where the names came from
- The story behind Catchlight
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