# 天國之歌 vs KeysClass

The clearest difference is iOS requirement: 天國之歌 at 12.0 against KeysClass's 18.0. On price, update cadence, 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.

天國之歌 ships an update every 10 months, KeysClass every 12 months. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 天國之歌 | KeysClass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1046778608/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 12 months |
| Size | 24 MB | 1 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bruce Tseng](https://appshunter.io/developer/1046778607) | [YiLin Wen](https://appshunter.io/developer/1110629566) |

## What reviewers say

### 天國之歌

[App page](https://appshunter.io/ios/app/id1046778608)

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

**In-app purchases:** none


### KeysClass

[App page](https://appshunter.io/ios/app/keysclass/id1486556540)

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

**In-app purchases:** none


## Frequently asked questions

### Is 天國之歌 free?

天國之歌 is free to download, with no in-app purchases.

### Is KeysClass free?

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

### Do 天國之歌 or KeysClass have ads?

Neither 天國之歌 nor KeysClass shows ads.

### Which is updated more often, 天國之歌 or KeysClass?

天國之歌 ships an update every 10 months, and KeysClass every 12 months. Most recently, 天國之歌 was updated on November 2, 2026 and KeysClass on October 29, 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.*