# Simple Study Stamp vs 勉強カレンダー、簡単登録！進捗が分かる、やる気継続

The clearest difference is ads: 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 at none against Simple Study Stamp's shown. 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, 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.

Simple Study Stamp ships an update every 10 days, 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 weekly. The most recent releases landed on September 12, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Simple Study Stamp | 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Weekly** |
| Size | 10 MB | 78 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Futoshi Akahoshi](https://appshunter.io/developer/1811302322) | [Kazuaki Takahashi](https://appshunter.io/developer/1691521543) |

## What reviewers say

### Simple Study Stamp

[App page](https://appshunter.io/ios/app/simple-study-stamp/id6757266510)

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

**In-app purchases:** none


### 勉強カレンダー、簡単登録！進捗が分かる、やる気継続

[App page](https://appshunter.io/ios/app/id6785962096)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Study Stamp free?

Simple Study Stamp is free to download, with no in-app purchases.

### Is 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 free?

勉強カレンダー、簡単登録！進捗が分かる、やる気継続 is free to download, with no in-app purchases.

### Do Simple Study Stamp or 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 have ads?

Simple Study Stamp shows ads; 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 does not.

### Which is updated more often, Simple Study Stamp or 勉強カレンダー、簡単登録！進捗が分かる、やる気継続?

Simple Study Stamp ships an update every 10 days, and 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 weekly. Most recently, Simple Study Stamp was updated on September 12, 2026 and 勉強カレンダー、簡単登録！進捗が分かる、やる気継続 on September 18, 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.*