# TimeCalcula vs Strange Clocks

The clearest difference is in-app purchases: TimeCalcula at none against Strange Clocks's 1. TimeCalcula also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Strange Clocks sells 1 one-off in-app purchase. TimeCalcula asks for nothing beyond the download.

TimeCalcula ships an update every 2 days, Strange Clocks every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | TimeCalcula | Strange Clocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 19 MB | 9 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hin Fung Lee](https://appshunter.io/developer/1782500824) | [KIP Networks](https://appshunter.io/developer/1886007012) |

## What reviewers say

### TimeCalcula

[App page](https://appshunter.io/ios/app/timecalcula-time-calculator/id6788082983)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Strange Clocks

[App page](https://appshunter.io/ios/app/strange-clocks/id6814674635)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all 15 clocks | $1.99 | one-time |


## Frequently asked questions

### Is TimeCalcula free?

TimeCalcula is free to download, with no in-app purchases.

### Is Strange Clocks free?

Strange Clocks is free to download, with in-app purchases available.

### Do TimeCalcula or Strange Clocks have ads?

Neither TimeCalcula nor Strange Clocks shows ads.

### Which is updated more often, TimeCalcula or Strange Clocks?

TimeCalcula ships an update every 2 days, and Strange Clocks every 3 days. Most recently, TimeCalcula was updated on October 24, 2026 and Strange Clocks on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*