# Cairn: Countdown & Days Since — Anniversary widget & reminders

> Anniversary widget & reminders (iPhone/iPad app by 飞 吕.)

- Source: https://appshunter.io/ios/app/cairn-countdown-and-days-since/id6805060074 (this page in markdown: same URL + `.md`)
- Developer: [飞 吕](https://appshunter.io/developer/1851387805)
- Category: Productivity, Utilities
- Price: $0.99
- Age rating: 4+
- Requires: iOS 26.0 · 4 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-09-02
- Data updated: 2026-09-17
- User reviews in markdown: https://appshunter.io/ios/app/cairn-countdown-and-days-since/id6805060074/reviews.md

## What is Cairn?

Cairn counts down to the days you're waiting for, and counts up from the days you don't want to forget.

Give it a date. It answers in days — 124 days to go, or 1,024 days since. Everything else gets out of the way.

COUNTDOWN AND COUNT-UP, ONE MODEL
• Days to go for anything ahead: a holiday, a trip, an exam, a due date
• Days since anything behind: an anniversary, a baby's birth, the day you quit
• Turn on minute precision when the hour matters — "3 days 4 hours", with seconds only in the final hour
• Repeat yearly, monthly, weekly, every N days, or by the lunar calendar
• Every event carries its own time zone, so flying across the world never shifts the number

SEE WHERE IT STANDS
• A countdown bar reads like a battery gauge: solid is what's left, full to empty
• A count-up grid fills one square at a time, a day at a time
• Milestones at 100, 365, 520, 1,000 and 1,314 days, marked right on the track
• Ring, milestone track or heat grid — pick one per event, or just keep the number
• A year view lays out all twelve months at once, so you can see which one is crowded

REMINDERS THAT ARRIVE ON TIME
• Several reminders per event: days, weeks or months ahead, at the hour you choose
• A daily digest each morning for what's today and what's this week
• Live Activity and Dynamic Island for the last 24 hours
• Time-sensitive delivery for the dates that shouldn't wait behind a Focus

EVERYWHERE YOU LOOK
• Home Screen widgets in small, medium and large: one event, a list, or a chart
• Lock Screen widgets — inline, circular and rectangular — each pointed at the event you choose
• An Apple Watch app and complications: circular, rectangular, inline and corner
• A Control Center control for a new countdown in one tap
• Ask Siri how long until anything

YOURS, AND ONLY YOURS
• No account. Nothing to sign up for.
• Syncs across iPhone, iPad and Mac through your own iCloud, and mirrors to Apple Watch from your iPhone
• Import dates from Calendar and birthdays from Contacts — read only, never written back
• Export everything to a single JSON file and import it back whenever you like
• Cover photos with automatic tinting, six muted themes, categories, pinning, archiving and a share card
• English and Simplified Chinese, dates and month names included

Cairn is free. No ads, no tracking, no subscription.

A cairn is the pile of stones a trail keeps stacking to mark the way — one for every stretch you have walked.


## Version history (last 2 releases)

### 1.0.1 — 2026-09-09

A maintenance release. No functional changes.

### 1.0.0 — 2026-09-02

No release notes.

## More apps by 飞 吕

- [Compass AR - Sun & Moon](https://appshunter.io/ios/app/compass-ar-sun-and-moon/id6755030188)
- [圆神相机](https://appshunter.io/ios/app/id6756509302)
- [Keel: Budget & Expense Tracker](https://appshunter.io/ios/app/keel-budget-and-expense-tracker/id6791050289)

All apps by 飞 吕: https://appshunter.io/developer/1851387805

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-17.*