# Sleep ∞ BGM vs DebuffTimer

The clearest difference is in-app purchases: Sleep ∞ BGM at none against DebuffTimer's 1. Sleep ∞ BGM also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. DebuffTimer sells 1 one-off in-app purchase. Sleep ∞ BGM asks for nothing beyond the download.

## The numbers

| Metric | Sleep ∞ BGM | DebuffTimer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 47 MB | 19 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [SHUNJI KUSAKA](https://appshunter.io/developer/1738810004) | [kizuku nishimoto](https://appshunter.io/developer/1882009144) |

## What reviewers say

### Sleep ∞ BGM

[App page](https://appshunter.io/ios/app/sleep-bgm/id6498901536)

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

**In-app purchases:** none


### DebuffTimer

[App page](https://appshunter.io/ios/app/debufftimer-sleep-by-fear/id6791829009)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DebuffTimer Pro | $1.99 | one-time |


## Frequently asked questions

### Is Sleep ∞ BGM free?

Sleep ∞ BGM is free to download, with no in-app purchases.

### Is DebuffTimer free?

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

### Do Sleep ∞ BGM or DebuffTimer have ads?

Neither Sleep ∞ BGM nor DebuffTimer shows ads.

---

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