# Calm Timer vs brain

The clearest difference is in-app purchases: brain at none against Calm Timer's 1. brain also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Calm Timer sells 1 one-off in-app purchase. brain asks for nothing beyond the download.

## The numbers

| Metric | Calm Timer | brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calm-timer-nature-sounds/id6760797097/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Ad-supported | — |
| Size | 38 MB | 117 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Playful Souls](https://appshunter.io/developer/1183816191) | [Leo Ikeda](https://appshunter.io/developer/6773049875) |

## What reviewers say

### Calm Timer

[App page](https://appshunter.io/ios/app/calm-timer-nature-sounds/id6760797097)

Find inner peace with ambient nature sounds and customizable timers. Boost productivity, aid sleep, or use as a meditation timer. Features guided breathing and seamless audio loops for a serene experience.

**Highlights:** High-quality nature sounds (rain, forest, ocean), Customizable meditation timers, Guided breathing exercises, Seamless audio loops, Background playback, Minimalist design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### brain

[App page](https://appshunter.io/ios/app/brain-detox/id6773049873)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calm Timer free?

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

### Is brain free?

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

### Do Calm Timer or brain have ads?

Calm Timer shows ads; brain does not.

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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.*