# Study Planner 21 vs おまかせエビングハウスくん

The clearest difference is ads: おまかせエビングハウスくん at none against Study Planner 21's shown. Study Planner 21's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.6 vs 16.0). On price, 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, おまかせエビングハウスくん every 2 months. The most recent releases landed on October 1, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Study Planner 21 | おまかせエビングハウスくん |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 25 MB | 3 MB |
| Requires iOS | **13.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Foodmenu.world Inc.](https://appshunter.io/developer/1438351063) | [nanami izumi](https://appshunter.io/developer/1739007991) |

## 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


### おまかせエビングハウスくん

[App page](https://appshunter.io/ios/app/id6741511552)

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

**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 おまかせエビングハウスくん free?

おまかせエビングハウスくん is free to download, with no in-app purchases.

### Do Study Planner 21 or おまかせエビングハウスくん have ads?

Study Planner 21 shows ads; おまかせエビングハウスくん does not.

### Which is updated more often, Study Planner 21 or おまかせエビングハウスくん?

Study Planner 21 ships an update every 3 weeks, and おまかせエビングハウスくん every 2 months. Most recently, Study Planner 21 was updated on October 1, 2026 and おまかせエビングハウスくん on September 27, 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.*