# Sonshine vs Rainbow Keys

The clearest difference is update cadence: Rainbow Keys at every 4 days against Sonshine's every 22 months. Rainbow Keys also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

Sonshine ships an update every 22 months, Rainbow Keys every 4 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Sonshine | Rainbow Keys |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 22 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 34 MB |
| Requires iOS | **16.0** | 17 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [GOOD NEWS BROADCASTERS INC](https://appshunter.io/developer/1669015454) | [Matthew Sefton](https://appshunter.io/developer/1726261512) |

## What reviewers say

### Sonshine

[App page](https://appshunter.io/ios/app/sonshine/id1669015452)

**In-app purchases:** none


### Rainbow Keys

[App page](https://appshunter.io/ios/app/rainbow-keys/id6476235636)

Learn piano scales and chords with augmented reality. This app overlays key names onto your keyboard, aiding real-time learning for improvisation and music theory.

**Highlights:** Augmented reality key display, Object recognition for keyboards, Selectable scales and chords, Real-time learning, Music theory education, Improvisation aid

**In-app purchases:** none


## Frequently asked questions

### Is Sonshine free?

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

### Is Rainbow Keys free?

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

### Which is updated more often, Sonshine or Rainbow Keys?

Sonshine ships an update every 22 months, and Rainbow Keys every 4 days. Most recently, Sonshine was updated on November 3, 2026 and Rainbow Keys on November 4, 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.*