# Timer99 vs Clock Twirling

The clearest difference is in-app purchases: Timer99 at none against Clock Twirling's 1. Timer99 also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). On price and device support there is nothing between them.

Both are free to download. Clock Twirling sells 1 one-off in-app purchase. Timer99 asks for nothing beyond the download.

Timer99 ships an update every 2 days, Clock Twirling weekly. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Timer99 | Clock Twirling |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Size | 8 MB | 4 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takahashi Naoto](https://appshunter.io/developer/375321356) | [zhenhua qin](https://appshunter.io/developer/457243793) |

## What reviewers say

### Timer99

[App page](https://appshunter.io/ios/app/timer99/id1501276905)

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

**In-app purchases:** none


### Clock Twirling

[App page](https://appshunter.io/ios/app/clock-twirling/id6760804276)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.99 | one-time |


## Frequently asked questions

### Is Timer99 free?

Timer99 is free to download, with no in-app purchases.

### Is Clock Twirling free?

Clock Twirling is free to download, with in-app purchases available.

### Do Timer99 or Clock Twirling have ads?

Clock Twirling shows ads; Timer99 does not.

### Which is updated more often, Timer99 or Clock Twirling?

Timer99 ships an update every 2 days, and Clock Twirling weekly. Most recently, Timer99 was updated on October 4, 2026 and Clock Twirling on October 1, 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.*