# ZoneFlip vs Unichrono

The clearest difference is update cadence: Unichrono at every 5 days against ZoneFlip's every 3 weeks. Unichrono also leads on device support (4 vs 1) and iOS requirement (17.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ZoneFlip sells 1 one-off in-app purchase and Unichrono sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ZoneFlip ships an update every 3 weeks, Unichrono every 5 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZoneFlip | Unichrono |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 0 MB | 34 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [永 张](https://appshunter.io/developer/1806535769) | [Abhilash Emmanuel](https://appshunter.io/developer/6802869223) |

## What reviewers say

### ZoneFlip

[App page](https://appshunter.io/ios/app/zoneflip/id6785983114)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZoneFlip Pro | $4.99 | one-time |


### Unichrono

[App page](https://appshunter.io/ios/app/unichrono/id6804218446)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unichrono: World Clock Widget | $2.99 | one-time |


## Frequently asked questions

### Is ZoneFlip free?

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

### Is Unichrono free?

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

### Do ZoneFlip or Unichrono have ads?

Neither ZoneFlip nor Unichrono shows ads.

### Which is updated more often, ZoneFlip or Unichrono?

ZoneFlip ships an update every 3 weeks, and Unichrono every 5 days. Most recently, ZoneFlip was updated on October 16, 2026 and Unichrono on October 24, 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.*