# 勉強専用タイマー | 勉強を一括管理 vs Simple Study Stamp

The clearest difference is ads: 勉強専用タイマー | 勉強を一括管理 at none against Simple Study Stamp's shown. 勉強専用タイマー | 勉強を一括管理 also leads on iOS requirement (12.4 vs 17.0). Simple Study Stamp's advantage is update cadence (every 10 days vs every 6 weeks). 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.

勉強専用タイマー | 勉強を一括管理 ships an update every 6 weeks, Simple Study Stamp every 10 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 勉強専用タイマー | 勉強を一括管理 | Simple Study Stamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1484488124/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 13 MB | 10 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yusuke Otsuka](https://appshunter.io/developer/1484488123) | [Futoshi Akahoshi](https://appshunter.io/developer/1811302322) |

## What reviewers say

### 勉強専用タイマー | 勉強を一括管理

[App page](https://appshunter.io/ios/app/id1484488124)

This app helps users study more efficiently by creating custom study cycles with timed work and break periods. It leverages psychological effects like the "start effect" and "deadline effect" to boost concentration and make studying a habit. The app runs in the background and notifies users when a session ends, without excessive battery drain.

**Highlights:** Customizable study cycles, Timed work and break periods, Start and deadline effect utilization, Habit formation support, Background operation with notifications, Easy restart with previous settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Study Stamp

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

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

**In-app purchases:** none


## Frequently asked questions

### Is 勉強専用タイマー | 勉強を一括管理 free?

勉強専用タイマー | 勉強を一括管理 is free to download, with no in-app purchases.

### Is Simple Study Stamp free?

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

### Do 勉強専用タイマー | 勉強を一括管理 or Simple Study Stamp have ads?

Simple Study Stamp shows ads; 勉強専用タイマー | 勉強を一括管理 does not.

### Which is updated more often, 勉強専用タイマー | 勉強を一括管理 or Simple Study Stamp?

勉強専用タイマー | 勉強を一括管理 ships an update every 6 weeks, and Simple Study Stamp every 10 days. Most recently, 勉強専用タイマー | 勉強を一括管理 was updated on October 13, 2026 and Simple Study Stamp on September 30, 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.*