# Study Timer vs Sum

The clearest difference is ads: Sum at none against Study Timer's shown. On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Study Timer sells 1 in-app purchase, starting at $9.99 per year and Sum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 13, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Study Timer | Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sum-study-timer-and-tracker/id6761293821/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 31 MB | 3 MB |
| Requires iOS | **17.0** | 18 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kizuna yoshihara](https://appshunter.io/developer/1807732321) | [Nene Nakagawa](https://appshunter.io/developer/1821103094) |

## What reviewers say

### Study Timer

[App page](https://appshunter.io/ios/app/study-timer-gokaku-log/id6757664927)

This app helps students and professionals plan study time for exams. It calculates daily targets based on your exam date and total hours, then tracks focused sessions. Visualize progress with charts and maintain consistency with streaks and badges.

**Highlights:** Study timer with stopwatch, countdown, or Pomodoro, Progress tracking by day, week, month, and year, Exam countdown and multiple goal management, Organize subjects, books, and courses, Set total time goals and track study streaks, Offline core tracking with iCloud sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除（年払い） | $9.99 | per year |


### Sum

[App page](https://appshunter.io/ios/app/sum-study-timer-and-tracker/id6761293821)

Track and manage your study time by subject with a simple timer. Log sessions, add notes, and visualize your progress with weekly graphs and a calendar. Focus on learning without distractions.

**Highlights:** Study time tracking, Subject and material logging, Weekly progress graphs, Calendar visualization, Study streaks, Pomodoro timer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackd Pro | $1.99 | one-time |


## Frequently asked questions

### Is Study Timer free?

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

### Is Sum free?

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

### Do Study Timer or Sum have ads?

Study Timer shows ads; Sum does not.

### Which is updated more often, Study Timer or Sum?

Study Timer ships an update every 3 weeks, and Sum every 3 weeks. Most recently, Study Timer was updated on November 13, 2026 and Sum on November 9, 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.*