# GainX2 vs AU EngineCore

The clearest difference is price: GainX2 at $1.99 against AU EngineCore's $22.99. GainX2 also leads on device support (4 vs 2) and iOS requirement (12.0 vs 16.6). On update cadence, ads and in-app purchases there is nothing between them.

GainX2 costs $1.99 and AU EngineCore $22.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GainX2 ships an update every 5 days, AU EngineCore weekly. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | GainX2 | AU EngineCore |
| --- | --- | --- |
| Price | **$1.99** | $22.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Size | 12 MB | 13 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rob Jackson](https://appshunter.io/developer/1072346998) | [Antonio Sorin TASU](https://appshunter.io/developer/1883473854) |

## What reviewers say

### GainX2

[App page](https://appshunter.io/ios/app/gainx2/id6755764494)

**In-app purchases:** none


### AU EngineCore

[App page](https://appshunter.io/ios/app/au-enginecore/id6766300671)

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

**In-app purchases:** none


## Frequently asked questions

### Is GainX2 free?

GainX2 costs $1.99, with no in-app purchases.

### Is AU EngineCore free?

AU EngineCore costs $22.99, with no in-app purchases.

### Do GainX2 or AU EngineCore have ads?

Neither GainX2 nor AU EngineCore shows ads.

### Which is updated more often, GainX2 or AU EngineCore?

GainX2 ships an update every 5 days, and AU EngineCore weekly. Most recently, GainX2 was updated on September 19, 2026 and AU EngineCore on September 14, 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.*