# 렘수면 vs Exam Countdown & Study Timer

The clearest difference is in-app purchases: 렘수면 at none against Exam Countdown & Study Timer's 1. 렘수면 also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Exam Countdown & Study Timer sells 1 one-off in-app purchase. 렘수면 asks for nothing beyond the download.

렘수면 ships an update every 10 days, Exam Countdown & Study Timer every 3 weeks. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | 렘수면 | Exam Countdown & Study Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Insight&myung, LLC](https://appshunter.io/developer/1752352451) | [BEAK,K.K.](https://appshunter.io/developer/1808079760) |

## What reviewers say

### 렘수면

[App page](https://appshunter.io/ios/app/id6764481553)

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

**In-app purchases:** none


### Exam Countdown & Study Timer

[App page](https://appshunter.io/ios/app/exam-countdown-and-study-timer/id6777218233)

This app helps you track exam dates, plan study sessions, and monitor your progress. It offers a countdown clock, a study timer with Pomodoro support, and detailed history logs to visualize your learning journey.

**Highlights:** Countdown clock for exams and deadlines, Study planner with color-coded subjects and tasks, Live study time tracking with a timer, Pomodoro focus timer, Detailed study history and progress visualization, Exam-style timer for timed practice, Data backup and export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (ad-free + full history) | $0.99 | one-time |


## Frequently asked questions

### Is 렘수면 free?

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

### Is Exam Countdown & Study Timer free?

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

### Do 렘수면 or Exam Countdown & Study Timer have ads?

Exam Countdown & Study Timer shows ads; 렘수면 does not.

### Which is updated more often, 렘수면 or Exam Countdown & Study Timer?

렘수면 ships an update every 10 days, and Exam Countdown & Study Timer every 3 weeks. Most recently, 렘수면 was updated on October 31, 2026 and Exam Countdown & Study Timer on November 1, 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.*