# 일백제 vs StudyStamp

The clearest difference is update cadence: StudyStamp at every 4 days against 일백제's every 9 days. 일백제's advantage is iOS requirement (15.1 vs 17.0). On price, ads, 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.

일백제 ships an update every 9 days, StudyStamp every 4 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 일백제 | StudyStamp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 41 MB | 8 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DEOKLYONG MOON](https://appshunter.io/developer/1890881362) | [YoungBeom Seo](https://appshunter.io/developer/6807436974) |

## What reviewers say

### 일백제

[App page](https://appshunter.io/ios/app/id6806596359)

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

**In-app purchases:** none


### StudyStamp

[App page](https://appshunter.io/ios/app/studystamp/id6807436972)

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

**In-app purchases:** none


## Frequently asked questions

### Is 일백제 free?

일백제 is free to download, with no in-app purchases.

### Is StudyStamp free?

StudyStamp is free to download, with no in-app purchases.

### Do 일백제 or StudyStamp have ads?

Neither 일백제 nor StudyStamp shows ads.

### Which is updated more often, 일백제 or StudyStamp?

일백제 ships an update every 9 days, and StudyStamp every 4 days. Most recently, 일백제 was updated on October 31, 2026 and StudyStamp on October 29, 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.*