# Hours Time Manager vs Simple Study Stamp

The clearest difference is in-app purchases: Simple Study Stamp at none against Hours Time Manager's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Hours Time Manager sells 2 in-app purchases, starting at $1.99 per month. Simple Study Stamp asks for nothing beyond the download.

Hours Time Manager ships an update every 2 weeks, Simple Study Stamp every 10 days. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Hours Time Manager | Simple Study Stamp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 192 MB | 10 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QOOQ inc.](https://appshunter.io/developer/446639722) | [Futoshi Akahoshi](https://appshunter.io/developer/1811302322) |

## What reviewers say

### Hours Time Manager

[App page](https://appshunter.io/ios/app/hours-time-manager/id1552604038)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| プレミアム会員年間サブスクリプション(16%お得) | $19.99 | per year |


### 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 Hours Time Manager free?

Hours Time Manager 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 Hours Time Manager or Simple Study Stamp have ads?

Both Hours Time Manager and Simple Study Stamp show ads.

### Which is updated more often, Hours Time Manager or Simple Study Stamp?

Hours Time Manager ships an update every 2 weeks, and Simple Study Stamp every 10 days. Most recently, Hours Time Manager was updated on September 9, 2026 and Simple Study Stamp on September 12, 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.*