# Fasty vs Hatagi

The clearest difference is update cadence: Hatagi at every 3 weeks against Fasty's every 16 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fasty ships an update every 16 months, Hatagi every 3 weeks. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Fasty | Hatagi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/fasty-fasting-tracker/id1596329455/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 2 MB | 110 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Forest and the Trees, LLC](https://appshunter.io/developer/1596329457) | [Michal Lewandowski](https://appshunter.io/developer/1620510334) |

## What reviewers say

### Fasty

[App page](https://appshunter.io/ios/app/fasty-fasting-tracker/id1596329455)

This app helps users track intermittent fasting by monitoring fasting days and eating periods. It supports weight tracking in both pounds and kilograms and does not collect user data.

**Highlights:** Intermittent fasting tracking, Weight tracking, Fasting day monitoring, Eating period logging, Pound and kilogram support, No data collection

**In-app purchases:** none


### Hatagi

[App page](https://appshunter.io/ios/app/hatagi/id6764569539)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fasty free?

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

### Is Hatagi free?

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

### Do Fasty or Hatagi have ads?

Neither Fasty nor Hatagi shows ads.

### Which is updated more often, Fasty or Hatagi?

Fasty ships an update every 16 months, and Hatagi every 3 weeks. Most recently, Fasty was updated on October 1, 2026 and Hatagi on September 28, 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.*