# Study Stopwatch vs Simple Study Stamp

The clearest difference is in-app purchases: Simple Study Stamp at none against Study Stopwatch's 1. Study Stopwatch's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Study Stopwatch sells 1 one-off in-app purchase. Simple Study Stamp asks for nothing beyond the download.

Study Stopwatch ships an update every 3 weeks, Simple Study Stamp every 10 days. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Study Stopwatch | Simple Study Stamp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 10 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kotobaz](https://appshunter.io/developer/1634727152) | [Futoshi Akahoshi](https://appshunter.io/developer/1811302322) |

## What reviewers say

### Study Stopwatch

[App page](https://appshunter.io/ios/app/study-stopwatch-hazime/id6461720701)

This app helps you track your study sessions with a simple stopwatch. Organize your learning by subject and visualize your progress on a calendar. Stay focused and motivated to achieve your academic goals.

**Highlights:** Study time tracking, Subject organization, Calendar progress review, Focused session recording, Progress visualization

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Widget機能 | $0.99 | one-time |


### 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 Study Stopwatch free?

Study Stopwatch is free to download, with in-app purchases available.

### Is Simple Study Stamp free?

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

### Do Study Stopwatch or Simple Study Stamp have ads?

Simple Study Stamp shows ads; Study Stopwatch does not.

### Which is updated more often, Study Stopwatch or Simple Study Stamp?

Study Stopwatch ships an update every 3 weeks, and Simple Study Stamp every 10 days. Most recently, Study Stopwatch was updated on October 8, 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.*