# RiZM(リズム) vs リトル・サイエンティストアプリ

The clearest difference is update cadence: RiZM(リズム) at every 5 weeks against リトル・サイエンティストアプリ's every 6 months. RiZM(リズム) also leads on iOS requirement (8.0 vs 16.1.1). On price, ads, in-app purchases and device support there is nothing between them.

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

RiZM(リズム) ships an update every 5 weeks, リトル・サイエンティストアプリ every 6 months. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | RiZM(リズム) | リトル・サイエンティストアプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Size | 38 MB | 24 MB |
| Requires iOS | **8.0** | 16.1.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LiME Inc.](https://appshunter.io/developer/972351013) | [LITTLE SCIENTISTGS, K.K.](https://appshunter.io/developer/1537905995) |

## What reviewers say

### RiZM(リズム)

[App page](https://appshunter.io/ios/app/rizm/id1336396370)

**In-app purchases:** none


### リトル・サイエンティストアプリ

[App page](https://appshunter.io/ios/app/id1537905992)

**In-app purchases:** none


## Frequently asked questions

### Is RiZM(リズム) free?

RiZM(リズム) is free to download, with no in-app purchases.

### Is リトル・サイエンティストアプリ free?

リトル・サイエンティストアプリ is free to download, with no in-app purchases.

### Do RiZM(リズム) or リトル・サイエンティストアプリ have ads?

Neither RiZM(リズム) nor リトル・サイエンティストアプリ shows ads.

### Which is updated more often, RiZM(リズム) or リトル・サイエンティストアプリ?

RiZM(リズム) ships an update every 5 weeks, and リトル・サイエンティストアプリ every 6 months. Most recently, RiZM(リズム) was updated on October 4, 2026 and リトル・サイエンティストアプリ on October 16, 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.*