# TenSync vs Clock Challenge

The clearest difference is ads: Clock Challenge at none against TenSync's shown. Clock Challenge also leads on update cadence (every 2 days vs every 4 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

TenSync ships an update every 4 days, Clock Challenge every 2 days. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | TenSync | Clock Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clock-challenge-stop-at-10/id6800765527/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | — | Free |
| Size | 6 MB | 31 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hakaru Hirose](https://appshunter.io/developer/1866507020) | [Travis Moher](https://appshunter.io/developer/1869982110) |

## What reviewers say

### TenSync

[App page](https://appshunter.io/ios/app/tensync/id6763708226)

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

**In-app purchases:** none


### Clock Challenge

[App page](https://appshunter.io/ios/app/clock-challenge-stop-at-10/id6800765527)

Test your timing precision in this minimalist game where you get one daily attempt to stop a timer at exactly 10.000 seconds. Compete on leaderboards and build a daily streak.

**Highlights:** One daily attempt, Stop timer at 10.000 seconds, Global leaderboards, Daily streak tracking, Millisecond precision, Server-checked times

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

**In-app purchases:** none


## Frequently asked questions

### Is TenSync free?

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

### Is Clock Challenge free?

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

### Do TenSync or Clock Challenge have ads?

TenSync shows ads; Clock Challenge does not.

### Which is updated more often, TenSync or Clock Challenge?

TenSync ships an update every 4 days, and Clock Challenge every 2 days. Most recently, TenSync was updated on September 21, 2026 and Clock Challenge on September 30, 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.*