# Fast vs Fastingkit

The clearest difference is in-app purchases: Fast at none against Fastingkit's 3. Fast also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Fastingkit sells 3 in-app purchases, starting at $0.99 per month. Fast asks for nothing beyond the download.

Fast ships an update every 2 days, Fastingkit every 2 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Fast | Fastingkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 6 MB | 36 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Invotek AS](https://appshunter.io/developer/1836667478) | [Rashmi Chaudhari](https://appshunter.io/developer/6802464521) |

## What reviewers say

### Fast

[App page](https://appshunter.io/ios/app/fast-e-intermittent-fasting/id6759206116)

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

**In-app purchases:** none


### Fastingkit

[App page](https://appshunter.io/ios/app/fastingkit-fasting-tracker/id6797449870)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fastingkit Pro | $0.99 | per month |
| Fastingkit Pro | $9.99 | per year |
| Fastingkit Pro | $29.99 | one-time |


## Frequently asked questions

### Is Fast free?

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

### Is Fastingkit free?

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

### Do Fast or Fastingkit have ads?

Fastingkit shows ads; Fast does not.

### Which is updated more often, Fast or Fastingkit?

Fast ships an update every 2 days, and Fastingkit every 2 weeks. Most recently, Fast was updated on October 31, 2026 and Fastingkit on November 6, 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.*