# Slumber Drift vs FastBell

Slumber Drift and FastBell are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Slumber Drift sells 4 one-off in-app purchases and FastBell sells 1 in-app purchase, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Slumber Drift ships an update every 4 days, FastBell every 3 days. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Slumber Drift | FastBell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 4 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takumi Kanzaki](https://appshunter.io/developer/1820952468) | [Starcrown Inc](https://appshunter.io/developer/1082624152) |

## What reviewers say

### Slumber Drift

[App page](https://appshunter.io/ios/app/slumber-drift-idle-rpg/id6760349482)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |
| Buy me a meal | $2.99 | one-time |
| You're amazing | $4.99 | one-time |
| Unlock Pro | $4.99 | one-time |


### 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 |


## Frequently asked questions

### Is Slumber Drift free?

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

### Is FastBell free?

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

### Do Slumber Drift or FastBell have ads?

Neither Slumber Drift nor FastBell shows ads.

### Which is updated more often, Slumber Drift or FastBell?

Slumber Drift ships an update every 4 days, and FastBell every 3 days. Most recently, Slumber Drift was updated on October 8, 2026 and FastBell on October 5, 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.*