# OneClock vs Study Tracker

The clearest difference is monetization model: Study Tracker at free with in-app purchases against OneClock's subscription. Study Tracker also leads on update cadence (fortnightly vs every 3 months) and ratings volume (29 vs 9). OneClock's advantage is review sentiment (83% vs 51%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. OneClock sells 2 in-app purchases, starting at $0.99 per month and Study Tracker sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Study Tracker holds the better App Store score, 4.1 against 3.9. Both are backed by a comparable volume of ratings — 9 and 29 respectively. Written reviews complicate that: 83% of OneClock's written reviews are positive against 51% of Study Tracker's, so the app with the better star average is not the one people write more warmly about.

OneClock ships an update every 3 months, Study Tracker fortnightly. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | OneClock | Study Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/oneclock-a-simple-flip-clock/id1257395357/reviews) | **[4.1 (29 ratings)](https://appshunter.io/ios/app/study-tracker-focus-timer/id1560095006/reviews)** |
| Number of ratings | 9 | **29** |
| Positive reviews | **83.0% of reviews** | 50.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 11 MB | 14 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Reinvent Technology Co., Ltd.](https://appshunter.io/developer/1250290964) | [Shenzhen Gude Aipu Technology Co., Ltd](https://appshunter.io/developer/1896411340) |

## What reviewers say

### OneClock

[App page](https://appshunter.io/ios/app/oneclock-a-simple-flip-clock/id1257395357)

This app offers a variety of customizable clock styles for desktop and mobile devices. Enjoy features like adjustable display modes, font customization, and transparency settings, with multiple clock designs available.

**Highlights:** Multiple clock styles (Flip, Digital, Dial), Desktop display on macOS, Customizable font and transparency, Portrait and landscape modes, Screen not quenching, Home screen and widget support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |


### Study Tracker

[App page](https://appshunter.io/ios/app/study-tracker-focus-timer/id1560095006)

This app helps you track your study time, set custom courses and plans, and utilize various timers like Pomodoro and countdown for efficient learning. It offers detailed statistics, white noise for focus, and exam countdowns with widgets. Data syncs across devices via iCloud.

**Highlights:** Track study time, Customize courses and study plans, Pomodoro and countdown timers, Detailed study statistics, White noise for focus, Exam countdowns and widgets, Multi-device iCloud sync

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Month) | $0.99 | per month |
| Premium (Lifetime) | $4.99 | one-time |


## Frequently asked questions

### Is OneClock free?

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

### Is Study Tracker free?

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

### Which has better reviews, OneClock or Study Tracker?

Study Tracker is rated higher. OneClock averages 3.9 out of 5 from 9 ratings, while Study Tracker averages 4.1 from 29 ratings.

### Do OneClock or Study Tracker have ads?

Neither OneClock nor Study Tracker shows ads.

### Which is updated more often, OneClock or Study Tracker?

OneClock ships an update every 3 months, and Study Tracker fortnightly. Most recently, OneClock was updated on September 26, 2026 and Study Tracker 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.*