Cairn: Your Second Brain

Cairn is a second brain for every random thought. The idea in the shower. The thing you promised to do. The name of that book. Dump it into Cairn in seconds and let your head go quiet. Cairn keeps it, understands it, and brings it back when it matters. No account. No cloud AI. Your thoughts never leave your iPhone. Use it however your brain works: ideas, plans, reminders, to-dos, things to remember, or the occasional 2am thought. No folders, no formatting, no rules. DUMP IT • Type, dictate or take a photo. Voice is transcribed on your device • Add a reminder that rings like an alarm, or pin the place you were • Home Screen widget, Siri Shortcuts and the Share sheet, so nothing slips away • Your own filters for ideas, plans, a morning to-do, anything FIND IT BY MEANING, NOT EXACT WORDS • Type "trouble sleeping" and find "can't sleep again" • Search by date: "last March", "June 2024", "this week" • Photos are searchable too. Cairn reads the text in them and knows what they show • Search with your voice • Optional: find your thoughts from iPhone Search CAIRN REMEMBERS, SO YOU DON'T HAVE TO • Echoes: write something you thought months ago, and Cairn shows you the first time • Open loops: plans you wrote down and never closed, brought back gently • On this day: what was on your mind a year ago today • One card a day, never more. Tap "Not useful" and you'll see less of it SEE YOUR MIND • List or Sky: every thought is a star, and related thoughts connect on their own • Today: build a cairn, a stone for every day you dump a thought • Your thinking archetype and the themes that keep coming back • A calendar of your days. Go back to any date in one tap • With Apple Intelligence, themes get names and answers read naturally, always from your own words, never made up PRIVATE BY DESIGN • Everything runs on your device: understanding, search, transcription, photo reading • No account, no sign-in, no ads, no tracking. Your thoughts stay on your device, and backups go only to your own iCloud • Face ID app lock • Free encrypted backup to your own iCloud Drive, and an encrypted export you keep • Nothing is ever deleted on a timer FREE, AND CAIRN+ ONCE Capture, search, the Sky, photos, voice, reminders, On this day and backup are free forever. Cairn+ adds Echoes, Open loops, insights and your archetype, your own filters and extra themes. Every new user gets all of Cairn+ free for 14 days, no card, nothing to cancel. After that, Cairn+ is one payment, yours for good. No subscription. Works on iPhone and iPad. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://shreypinnada.github.io/cairn-legal/privacy-policy-ios.html