# Study Planner 21 vs 勉強の計画や復習管理

The clearest difference is update cadence: Study Planner 21 at every 3 weeks against 勉強の計画や復習管理's every 5 months. Study Planner 21 also leads on iOS requirement (13.6 vs 15.0). 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.

Study Planner 21 ships an update every 3 weeks, 勉強の計画や復習管理 every 5 months. The most recent releases landed on September 13, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Study Planner 21 | 勉強の計画や復習管理 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Size | 25 MB | 16 MB |
| Requires iOS | **13.6** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Foodmenu.world Inc.](https://appshunter.io/developer/1438351063) | [Masaya Kato](https://appshunter.io/developer/458867341) |

## What reviewers say

### Study Planner 21

[App page](https://appshunter.io/ios/app/study-planner-21/id1622049063)

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

**In-app purchases:** none


### 勉強の計画や復習管理

[App page](https://appshunter.io/ios/app/id1640394074)

**In-app purchases:** none


## Frequently asked questions

### Is Study Planner 21 free?

Study Planner 21 is free to download, with no in-app purchases.

### Is 勉強の計画や復習管理 free?

勉強の計画や復習管理 is free to download, with no in-app purchases.

### Do Study Planner 21 or 勉強の計画や復習管理 have ads?

Both Study Planner 21 and 勉強の計画や復習管理 show ads.

### Which is updated more often, Study Planner 21 or 勉強の計画や復習管理?

Study Planner 21 ships an update every 3 weeks, and 勉強の計画や復習管理 every 5 months. Most recently, Study Planner 21 was updated on September 13, 2026 and 勉強の計画や復習管理 on September 23, 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.*