# Blimbi vs FastKept

The clearest difference is update cadence: Blimbi at every 3 days against FastKept's fortnightly. Blimbi also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Blimbi sells 2 in-app purchases, starting at $3.99 per month and FastKept sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Blimbi ships an update every 3 days, FastKept fortnightly. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Blimbi | FastKept |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 92 MB | 17 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HURTADO GLOBAL MEDIA GROUP S DE RL DE CV](https://appshunter.io/developer/1667942417) | [Timothy Hess](https://appshunter.io/developer/1853679268) |

## What reviewers say

### Blimbi

[App page](https://appshunter.io/ios/app/blimbi-fasting-timer/id6806835958)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blimbi Plus monthly | $3.99 | per month |
| Blimbi Plus yearly | $24.99 | per year |


### FastKept

[App page](https://appshunter.io/ios/app/fastkept-fasting-tracker/id6814683683)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free Supporter Weekly | $0.99 | per 7 days |
| Ad-free Supporter Monthly | $2.99 | per month |
| Ad-free Supporter Yearly | $19.99 | per year |


## Frequently asked questions

### Is Blimbi free?

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

### Is FastKept free?

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

### Do Blimbi or FastKept have ads?

Neither Blimbi nor FastKept shows ads.

### Which is updated more often, Blimbi or FastKept?

Blimbi ships an update every 3 days, and FastKept fortnightly. Most recently, Blimbi was updated on October 18, 2026 and FastKept on October 20, 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.*