IsI Calculator vs Clock Tower
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IsI Calculator
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This app offers a complete calculator with many well-known features for your everyday calculations required. functions: addition subtraction multiplication Division Percent account Potentiation high 2 and 3 Since Version 1.2 the app is now useable on Apple Watch.
Clock Tower
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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
Verdict
The clearest difference is device support: IsI Calculator at 4 against Clock Tower's 2. IsI Calculator also leads on iOS requirement (9.0 vs 26.0). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | IsI Calculator | Clock Tower |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, Mac |
| Requires iOS | 9.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dominic Barra | Morgan Hunt |
In-app purchases
IsI Calculator
No in-app purchases
Clock Tower
No in-app purchases
