# Habit Detox vs Exam Countdown & Study Timer

The clearest difference is iOS requirement: Exam Countdown & Study Timer at 15.0 against Habit Detox's 17.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Habit Detox ships an update every 10 days, Exam Countdown & Study Timer every 2 weeks. Both last shipped on September 23, 2026.

## The numbers

| Metric | Habit Detox | Exam Countdown & Study Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 46 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Tomoya Ohashi](https://appshunter.io/developer/1800459005) | [BEAK, K.K.](https://appshunter.io/developer/1808079760) |

## What reviewers say

### Habit Detox

[App page](https://appshunter.io/ios/app/habit-detox-tracker-monk-mode/id6742887473)

**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 simulates real exam conditions with an analog clock to help you practice time management. It displays the days remaining until your target exam and offers customizable study session timers. Prepare for your tests with realistic mock exams and stay motivated with a clear view of your progress.

**Highlights:** Analog clock simulation for mock exams, Countdown of days until target exams, Customizable subject presets for exam times, Remaining time display with optional hide, End notification sound, Portrait and landscape orientation support

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

**In-app purchases:** none


## Frequently asked questions

### Is Habit Detox free?

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

### Is Exam Countdown & Study Timer free?

Exam Countdown & Study Timer is free to download, with no in-app purchases.

### Do Habit Detox or Exam Countdown & Study Timer have ads?

Both Habit Detox and Exam Countdown & Study Timer show ads.

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

Habit Detox ships an update every 10 days, and Exam Countdown & Study Timer every 2 weeks. Most recently, Habit Detox was updated on September 23, 2026 and Exam Countdown & Study Timer on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*