ClassLog vs Cairn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ClassLog
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ClassLog keeps your kids' classes, attendance and tuition in one place. Piano, swimming, dance, tutoring — the more activities you sign up for, the harder it gets to answer three simple questions: What's next? How many lessons are left? How much have I paid? ClassLog answers all three: · Today's classes at a glance — tap once to check in, hours deduct automatically · See how many lessons remain for each class, with a low-balance reminder · Every payment logged against the right course — refunds and receipts included Multiple kids? Keep them separate, view them together. Get a simple breakdown of attendance and spending per child. Your data stays on your device — nothing is uploaded. CSV import and export included, so nothing is lost when you switch phones. Track every class for your kids. Privacy Policy: https://essaycoder.github.io/classlog/privacy.html Terms of Use(EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Cairn
Track important upcoming dates and past anniversaries with a versatile countdown and count-up tool. It offers precise timing, customizable reminders, and various visual displays to keep you informed. Integrates seamlessly with your devices and data.
- Countdown and count-up for any event
- Minute and second precision timing
- Customizable repeat intervals
- Time zone support
- Visual progress tracking
- Milestone markers
- Home and Lock Screen widgets
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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 • Count only working days when a countdown is about business days • A date calculator for the days between two dates, or a date N days away — save the answer as an event • Pick up dates from a screenshot, a photo or a bit of text, and start a new event already filled in 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; a month view lays them out day by day • Yearly events show which anniversary it is, and the day a countdown reaches zero gets a small celebration 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, or find an event right from Spotlight • Share an event with family or friends: change the date and it changes for them too 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; local snapshots and Recently Deleted bring back what you removed by mistake • App Lock asks for Face ID, Touch ID or your passcode when you come back • Cover photos with automatic tinting, six muted themes, categories, pinning, archiving and a share card • English, Simplified and Traditional Chinese, Japanese, Korean, German, Spanish and Brazilian Portuguese — dates and month names included Cairn is a one-time purchase. No in-app purchases, no subscription, no ads, no tracking. A cairn is the pile of stones a trail keeps stacking to mark the way — one for every stretch you have walked.
Screenshots
Verdict
The clearest difference is price: ClassLog at Free against Cairn's $0.99. ClassLog also leads on iOS requirement (14.0 vs 26.0). Cairn's advantage is update cadence (weekly vs monthly). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ClassLog is free to download; Cairn costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ClassLog ships an update monthly, Cairn weekly. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.
| Parameter | ClassLog | Cairn |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 21 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 明昭 路 | 飞 吕 |
In-app purchases
ClassLog
No in-app purchases
Cairn
No in-app purchases







