# FastBell vs ホワイトノイズ・環境音・睡眠BGM (音凪)

The clearest difference is ads: FastBell at none against ホワイトノイズ・環境音・睡眠BGM (音凪)'s shown. FastBell also leads on update cadence (every 3 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. FastBell sells 1 in-app purchase, starting at $0.99 per 7 days and ホワイトノイズ・環境音・睡眠BGM (音凪) sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

FastBell ships an update every 3 days, ホワイトノイズ・環境音・睡眠BGM (音凪) fortnightly. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | FastBell | ホワイトノイズ・環境音・睡眠BGM (音凪) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 3 MB | 147 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Starcrown Inc](https://appshunter.io/developer/1082624152) | [hiroaki suzuki](https://appshunter.io/developer/1477004044) |

## What reviewers say

### FastBell

[App page](https://appshunter.io/ios/app/fastbell-fasting-timer/id6762079813)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastBell Pro Weekly | $0.99 | per 7 days |


### ホワイトノイズ・環境音・睡眠BGM (音凪)

[App page](https://appshunter.io/ios/app/bgm/id6766044501)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Otonagi Pro | $3.99 | one-time |


## Frequently asked questions

### Is FastBell free?

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

### Is ホワイトノイズ・環境音・睡眠BGM (音凪) free?

ホワイトノイズ・環境音・睡眠BGM (音凪) is free to download, with in-app purchases available.

### Do FastBell or ホワイトノイズ・環境音・睡眠BGM (音凪) have ads?

ホワイトノイズ・環境音・睡眠BGM (音凪) shows ads; FastBell does not.

### Which is updated more often, FastBell or ホワイトノイズ・環境音・睡眠BGM (音凪)?

FastBell ships an update every 3 days, and ホワイトノイズ・環境音・睡眠BGM (音凪) fortnightly. Most recently, FastBell was updated on October 5, 2026 and ホワイトノイズ・環境音・睡眠BGM (音凪) on October 2, 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.*