# ひとりでがんばりマスター！ vs KOOV®

The clearest difference is in-app purchases: KOOV® at none against ひとりでがんばりマスター！'s 10. KOOV® also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (12.0 vs 15.0). ひとりでがんばりマスター！'s advantage is device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. ひとりでがんばりマスター！ sells 10 one-off in-app purchases. KOOV® asks for nothing beyond the download.

ひとりでがんばりマスター！ ships an update every 6 months, KOOV® every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | ひとりでがんばりマスター！ | KOOV® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/koov/id1188974713/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 152 MB | 272 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [KUNO YASUYOSHI KYOIKU KENKYUJO, K.K.](https://appshunter.io/developer/1530882421) | [Sony Global Education, Inc.](https://appshunter.io/developer/994421997) |

## What reviewers say

### ひとりでがんばりマスター！

[App page](https://appshunter.io/ios/app/id1151851293)

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ひとりでがんばりマスター第1巻 | $6.99 | one-time |
| 2巻 | $6.99 | one-time |
| 3巻 | $6.99 | one-time |
| 4巻 | $6.99 | one-time |
| 5巻 | $6.99 | one-time |
| 6巻 | $6.99 | one-time |
| 7巻 | $6.99 | one-time |
| 8巻 | $6.99 | one-time |
| ひとりでがんばりマスター2~8巻 | $44.99 | one-time |
| 全8巻セット | $49.99 | one-time |


### KOOV®

[App page](https://appshunter.io/ios/app/koov/id1188974713)

This educational app teaches coding and robotics through interactive lessons and hands-on robot building. Users can follow pre-written code, earn badges for completing courses, and create their own unique robot designs.

**Highlights:** 3D building guide, Visual programming with coding blocks, Robot Recipes with pre-written code, Learning Course with badges, Free Production for custom robots, Collection of activities and creations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ひとりでがんばりマスター！ free?

ひとりでがんばりマスター！ is free to download, with in-app purchases available.

### Is KOOV® free?

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

### Do ひとりでがんばりマスター！ or KOOV® have ads?

Neither ひとりでがんばりマスター！ nor KOOV® shows ads.

### Which is updated more often, ひとりでがんばりマスター！ or KOOV®?

ひとりでがんばりマスター！ ships an update every 6 months, and KOOV® every 2 months. Most recently, ひとりでがんばりマスター！ was updated on October 24, 2026 and KOOV® on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*