# Study Time With Rain vs Sum

The clearest difference is ratings volume: Study Time With Rain at 789 against Sum's 2. Study Time With Rain also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18). Sum's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 91%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Study Time With Rain sells 10 in-app purchases, starting at $5.99 per month 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 4.8. That said, the two scores are not equally well evidenced: Study Time With Rain has 789 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 91% of Study Time With Rain's written reviews are positive against 100% of Sum's.

Study Time With Rain ships an update every 4 weeks, Sum every 3 weeks. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Study Time With Rain | Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (789 ratings)](https://appshunter.io/ios/app/study-time-with-rain-pomodoro/id6465894484/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sum-study-timer-and-tracker/id6761293821/reviews)** |
| Number of ratings | **789** | 2 |
| Positive reviews | 91.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 3 MB |
| Requires iOS | **15.0** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yoonjik Cho](https://appshunter.io/developer/1699502339) | [Nene Nakagawa](https://appshunter.io/developer/1821103094) |

## What reviewers say

### Study Time With Rain

[App page](https://appshunter.io/ios/app/study-time-with-rain-pomodoro/id6465894484)

Enhance your study sessions with a charming ghost companion and a variety of timer options. Track your progress, enjoy a curated song library, and set motivational countdowns for your academic goals.

**Highlights:** Cute ghost characters, Pomodoro & Primary Timer, Study statistics tracking, Song library for ambiance, Personal confidence & D-Day settings

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month | $5.99 | per month |
| White Cat | $0.59 | one-time |
| Black Cat | $0.59 | one-time |
| Glasses | $0.79 | one-time |
| Blackboard | $0.99 | one-time |
| Window Mountain | $1.29 | one-time |
| Window Snowman | $1.29 | one-time |
| Window Mountain Dark Version | $1.29 | one-time |
| Cherry Blossom | $1.29 | one-time |
| Premium Lifetime | $27.99 | one-time |

**What reviewers like**

- ❤️ Cute and aesthetic
- 🚀 Helps with productivity
- 🎶 Relaxing music and ASMR
- 👍 Simple and minimalistic

**What reviewers complain about**

- 💰 Restrictive free version, many features locked behind paywall
- 🐛 Issues with timer and music continuing in background
- 🔌 Music and timer stop when app is closed

**Reported bugs**

- Time tracking issues, inaccurate recording of study time
- Black screen bug
- Pen function noise removed

**Requested features**

- More customization options (colors, animations, etc.)
- Ability to earn in-app currency for premium features
- Seamless background playback of music and timer
- Dark mode
- Countdown timer with custom alerts


### 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 Time With Rain free?

Study Time With Rain 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 Time With Rain or Sum?

Sum is rated higher. Study Time With Rain averages 4.8 out of 5 from 789 ratings, while Sum averages 5.0 from 2 ratings.

### Do Study Time With Rain or Sum have ads?

Neither Study Time With Rain nor Sum shows ads.

### Which is updated more often, Study Time With Rain or Sum?

Study Time With Rain ships an update every 4 weeks, and Sum every 3 weeks. Most recently, Study Time With Rain 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.*