# Gangu Flip Challenge vs ReefShift

The clearest difference is update cadence: ReefShift at every 4 days against Gangu Flip Challenge's fortnightly. Gangu Flip Challenge's advantage is iOS requirement (12.0 vs 14.0). 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.

Gangu Flip Challenge ships an update fortnightly, ReefShift every 4 days. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Gangu Flip Challenge | ReefShift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 129 MB | 43 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mykola Bondar](https://appshunter.io/developer/1847735588) | [Tho Tran Ngoc](https://appshunter.io/developer/6786602154) |

## What reviewers say

### Gangu Flip Challenge

[App page](https://appshunter.io/ios/app/gangu-flip-challenge/id6754348212)

**Features:** macOS Compatibility

**In-app purchases:** none


### ReefShift

[App page](https://appshunter.io/ios/app/reefshift/id6786602152)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gangu Flip Challenge free?

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

### Is ReefShift free?

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

### Do Gangu Flip Challenge or ReefShift have ads?

Neither Gangu Flip Challenge nor ReefShift shows ads.

### Which is updated more often, Gangu Flip Challenge or ReefShift?

Gangu Flip Challenge ships an update fortnightly, and ReefShift every 4 days. Most recently, Gangu Flip Challenge was updated on October 14, 2026 and ReefShift on October 5, 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.*