# Study Timer & Time Tracker vs Sum

The clearest difference is rating: Sum at 5.0 against Study Timer & Time Tracker's 4.2. Sum also leads on ads (none vs shown) and review sentiment (100% vs 84%). Study Timer & Time Tracker's advantage is update cadence (every 6 days vs every 3 weeks) and ratings volume (28 vs 2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Study Timer & Time Tracker sells 1 one-off in-app purchase and Sum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sum holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Study Timer & Time Tracker has 28 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 84% of Study Timer & Time Tracker's written reviews are positive against 100% of Sum's.

Study Timer & Time Tracker ships an update every 6 days, Sum every 3 weeks. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Study Timer & Time Tracker | Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (28 ratings)](https://appshunter.io/ios/app/study-timer-and-time-tracker/id1644638467/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sum-study-timer-and-tracker/id6761293821/reviews)** |
| Number of ratings | **28** | 2 |
| Positive reviews | 83.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 34 MB | 3 MB |
| Requires iOS | **16.6** | 18 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [WEBDIA INC.](https://appshunter.io/developer/1271616115) | [Nene Nakagawa](https://appshunter.io/developer/1821103094) |

## What reviewers say

### Study Timer & Time Tracker

[App page](https://appshunter.io/ios/app/study-timer-and-time-tracker/id1644638467)

Easily track your daily study sessions and visualize your progress with detailed history charts. This app helps you identify subjects needing more attention, encouraging balanced learning for improved academic performance.

**Highlights:** Record study time by subject, Register and manage subjects, View study history with graphs, Visualize time spent on weak subjects, Ad-supported free usage

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 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 & Time Tracker free?

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

### Is Sum free?

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

### Which has better reviews, Study Timer & Time Tracker or Sum?

Sum is rated higher. Study Timer & Time Tracker averages 4.2 out of 5 from 28 ratings, while Sum averages 5.0 from 2 ratings.

### Do Study Timer & Time Tracker or Sum have ads?

Study Timer & Time Tracker shows ads; Sum does not.

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

Study Timer & Time Tracker ships an update every 6 days, and Sum every 3 weeks. Most recently, Study Timer & Time Tracker was updated on November 7, 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.*