# mountain sleep vs ByeByeSugar!

The clearest difference is in-app purchases: mountain sleep at none against ByeByeSugar!'s 3. mountain sleep also leads on device support (3 vs 1) and iOS requirement (15.5 vs 17.6). ByeByeSugar!'s advantage is update cadence (every 5 days vs every 20 months). On price and ads there is nothing between them.

Both are free to download. ByeByeSugar! sells 3 one-off in-app purchases. mountain sleep asks for nothing beyond the download.

mountain sleep ships an update every 20 months, ByeByeSugar! every 5 days. The most recent releases landed on May 18, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | mountain sleep | ByeByeSugar! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 5 days** |
| Size | 26 MB | 7 MB |
| Requires iOS | **15.5** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kilian Eisenegger](https://appshunter.io/developer/1333678887) | [Sezgin Ege](https://appshunter.io/developer/1547114333) |

## What reviewers say

### mountain sleep

[App page](https://appshunter.io/ios/app/mountain-sleep/id1572660929)

**In-app purchases:** none


### ByeByeSugar!

[App page](https://appshunter.io/ios/app/byebyesugar/id6761415612)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Credits | $3.99 | one-time |
| Momentum Credits | $8.99 | one-time |
| Deep Run Credits | $14.99 | one-time |


## Frequently asked questions

### Is mountain sleep free?

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

### Is ByeByeSugar! free?

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

### Do mountain sleep or ByeByeSugar! have ads?

Neither mountain sleep nor ByeByeSugar! shows ads.

### Which is updated more often, mountain sleep or ByeByeSugar!?

mountain sleep ships an update every 20 months, and ByeByeSugar! every 5 days. Most recently, mountain sleep was updated on May 18, 2026 and ByeByeSugar! on September 14, 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.*