SinceBook
How long has it been?
How long has it been?
SinceBook is an interval-first event tracker for iPhone and iPad. Log the things you want to remember when they happened — doctor visits, oil changes, calls home, water filter changes — and SinceBook tells you how long it's been. Calm, quiet, and on-device.
Free. Every feature included. Optional tip jar inside if SinceBook helps and you want to say thanks.
Three formats: adaptive precision (“2 weeks, 3 days”), top two units (“3 years, 10 months”), or rounded (“almost 4 years”). Conversational or bare tone. Tap any interval to see the exact form.
Recurring alerts re-arm every time you log. One-shot alerts fire once and stay quiet. Notifications include a Log Now action so you can record from the lock screen.
Every event shows a histogram of intervals between occurrences and a calendar heatmap. See your average, longest, and shortest intervals at a glance.
Group events with custom tags. Filter the list to view only what you need.
Coming from Hindsight? Import your CSV directly. Categories become tags. Preview every event before importing — nothing gets written until you confirm.
Pin your most important events to the top of the list—they also claim widget slots first. Small, medium, large, and Lock Screen widgets put what matters one glance away. Tap to deep-link straight into the app.
“Hey Siri, log doctor visit in SinceBook.” “How long since I last called mom?” Voice and Shortcuts integration ships day one.
Deletes are recoverable for 30 days. Undo toast on every action; full Recently Deleted browser in Settings.
Your events sync between your Apple devices through your private iCloud account. Optional, never required.
Export your full history to a JSON file. Restore anywhere. Pairs with iCloud sync for belt-and-suspenders peace of mind.
SinceBook stores everything on your device. Optional iCloud sync uses your personal iCloud account — your data never touches a server owned by us or anyone else. No accounts, no analytics, no tracking.
For questions or feedback, email contact.