# KG vs Aether Learn

The clearest difference is price: KG at Free against Aether Learn's $2.99. Aether Learn's advantage is iOS requirement (17.0 vs 26.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

KG is free to download; Aether Learn costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

KG ships an update every 3 weeks, Aether Learn every 4 weeks. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | KG | Aether Learn |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 36 MB | 3 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) | [Diego Ponciano](https://appshunter.io/developer/1578805003) |

## What reviewers say

### KG

[App page](https://appshunter.io/ios/app/kg-square-virtual-analog-synth/id6776108274)

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

**In-app purchases:** none


### Aether Learn

[App page](https://appshunter.io/ios/app/aether-learn/id6786776504)

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

**In-app purchases:** none


## Frequently asked questions

### Is KG free?

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

### Is Aether Learn free?

Aether Learn costs $2.99, with no in-app purchases.

### Do KG or Aether Learn have ads?

Neither KG nor Aether Learn shows ads.

### Which is updated more often, KG or Aether Learn?

KG ships an update every 3 weeks, and Aether Learn every 4 weeks. Most recently, KG was updated on October 14, 2026 and Aether Learn on October 3, 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.*