# ZenFlip vs TT Clock

The clearest difference is update cadence: TT Clock at every 3 weeks against ZenFlip's every 6 weeks. TT Clock also leads on iOS requirement (13.0 vs 16). On price, ads, in-app purchases and device support there is nothing between them.

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

ZenFlip ships an update every 6 weeks, TT Clock every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ZenFlip | TT Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 2 MB | 29 MB |
| Requires iOS | 16 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [成东 胡](https://appshunter.io/developer/1643805379) | [Shenzhen PROS Electronics Co.,Ltd](https://appshunter.io/developer/1798637623) |

## What reviewers say

### ZenFlip

[App page](https://appshunter.io/ios/app/zenflip-full-screen-clock/id6443968056)

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

**In-app purchases:** none


### TT Clock

[App page](https://appshunter.io/ios/app/tt-clock/id6748670158)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZenFlip free?

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

### Is TT Clock free?

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

### Do ZenFlip or TT Clock have ads?

Neither ZenFlip nor TT Clock shows ads.

### Which is updated more often, ZenFlip or TT Clock?

ZenFlip ships an update every 6 weeks, and TT Clock every 3 weeks. Most recently, ZenFlip was updated on October 27, 2026 and TT Clock on October 28, 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.*