Comparison

CalCheck vs Clock Tower

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CalCheck

Features
Read full description

CalCheck ensures your calendars stay in sync across all your iOS devices. Never wonder if your events are up-to-date again! Install on more than one device, and they verify each other. This smart verification tool creates a special test event that moves through time, allowing you to instantly see if your calendar sync is working properly. Perfect for professionals, families, and anyone managing multiple devices who needs reliable calendar synchronization. KEY FEATURES: • Automatic sync verification every 2 hours • Real-time detection of other devices' sync status • Push notifications 24 hours before sync checks • Track sync history with detailed timestamps • See all your devices and their last sync times • Background sync monitoring - works while you sleep • Clean, simple interface showing last 30 days of events • Support for multiple calendars • Works with iCloud, Exchange, and other calendar services HOW IT WORKS: 1. Select your calendar for monitoring 2. CalCheck creates a verification event 14 days in the past 3. The app checks if this event syncs across your devices in the background automatically 4. Get notified if sync issues are detected 5. View other devices' sync status in real-time (need to be installed on two or more iPhones or iPads to work, connected to the same calendar) Perfect for: - Business professionals with iPad and iPhone - Families sharing calendars - Anyone who's missed appointments due to sync issues - IT administrators managing device fleets Never miss an important event due to sync failures again. CalCheck runs quietly in the background, giving you peace of mind that your calendar is always up-to-date.

About

Clock Tower

Features
Read full description

Clock Tower is a decorative clock and Home Screen / Lock Screen / Desktop widget with a ring-and-dial mechanic inspired by fantasy-adventure game interfaces. - An outer ring ticks forward every 5 minutes. - An inner dial advances every hour, in sync with the ring. - A sun-and-moon medallion flips between day and night as the clock crosses 6 AM and 6 PM. No accounts, no ads, no tracking, and no network access of any kind - everything runs entirely on your device. Add Clock Tower as a widget to your Home Screen, Lock Screen, or Mac desktop to keep an eye on the time while it quietly ticks along in the background.

Screenshots

CalCheck3 screens
Clock Tower2 screens

Verdict

The call

The clearest difference is iOS requirement: CalCheck at 15.6 against Clock Tower's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Ā· 4 level
CalCheck versus Clock Tower: the parameters behind the verdict, then further details
ParameterCalCheckClock Tower
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, Mac
Requires iOS15.6 — better26.0
Further details — not scored
Size4 MB3 MB
Age rating4+4+
DeveloperMorten PunnerudMorgan Hunt

In-app purchases

None

CalCheck

No in-app purchases

None

Clock Tower

No in-app purchases

Questions

Is CalCheck free?
CalCheck is free to download, with no in-app purchases.
Is Clock Tower free?
Clock Tower is free to download, with no in-app purchases.
Do CalCheck or Clock Tower have ads?
Neither CalCheck nor Clock Tower shows ads.

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