# Revision Tracker vs Study Clock Timer

The clearest difference is in-app purchases: Revision Tracker at none against Study Clock Timer's 1. Revision Tracker also leads on iOS requirement (13.0 vs 17.0). Study Clock Timer's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Study Clock Timer sells 1 one-off in-app purchase. Revision Tracker asks for nothing beyond the download.

Revision Tracker ships an update every 2 months, Study Clock Timer every 3 days. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Revision Tracker | Study Clock Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 22 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Helen Seymour](https://appshunter.io/developer/1836723352) | [Tatsuya Kawasaki](https://appshunter.io/developer/562479077) |

## What reviewers say

### Revision Tracker

[App page](https://appshunter.io/ios/app/revision-tracker-studyclock/id6772724234)

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

**In-app purchases:** none


### Study Clock Timer

[App page](https://appshunter.io/ios/app/study-clock-timer/id6780480380)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a drink | $2.99 | one-time |


## Frequently asked questions

### Is Revision Tracker free?

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

### Is Study Clock Timer free?

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

### Do Revision Tracker or Study Clock Timer have ads?

Neither Revision Tracker nor Study Clock Timer shows ads.

### Which is updated more often, Revision Tracker or Study Clock Timer?

Revision Tracker ships an update every 2 months, and Study Clock Timer every 3 days. Most recently, Revision Tracker was updated on October 6, 2026 and Study Clock Timer on October 5, 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.*