# 2 Keys vs AquaAR

The clearest difference is update cadence: 2 Keys at every 5 days against AquaAR's monthly. 2 Keys also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

2 Keys ships an update every 5 days, AquaAR monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 2 Keys | AquaAR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free | — |
| Size | 88 MB | 561 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Visual Theory Ltd](https://appshunter.io/developer/1771285448) | [Improvis LLC](https://appshunter.io/developer/1466792939) |

## What reviewers say

### 2 Keys

[App page](https://appshunter.io/ios/app/2-keys/id6740829929)

This rhythm-based game challenges players to control two pianos simultaneously. Collect specific keys while avoiding others, requiring focus and coordination. It's a fun brain workout for all ages, especially beneficial for pianists.

**Highlights:** Control two pianos at once, Collect keys, avoid obstacles, Boost hand coordination, Fast-paced gameplay, Train reflexes and concentration, Suitable for all ages

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

**In-app purchases:** none


### AquaAR

[App page](https://appshunter.io/ios/app/aquaar/id6742789275)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 2 Keys free?

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

### Is AquaAR free?

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

### Do 2 Keys or AquaAR have ads?

Neither 2 Keys nor AquaAR shows ads.

### Which is updated more often, 2 Keys or AquaAR?

2 Keys ships an update every 5 days, and AquaAR monthly. Most recently, 2 Keys was updated on October 24, 2026 and AquaAR 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.*