# InstaFit vs Fastia

The clearest difference is update cadence: InstaFit at every 3 days against Fastia's every 3 months. InstaFit also leads on iOS requirement (14.0.0 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. InstaFit sells 2 in-app purchases, starting at $14.99 per month and Fastia sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

InstaFit ships an update every 3 days, Fastia every 3 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | InstaFit | Fastia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Size | 44 MB | 10 MB |
| Requires iOS | **14.0.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Doha Ezzat Saied Ahmed Mohamed Ahmed Yousef](https://appshunter.io/developer/1848488232) | [Maksym Zaivyi](https://appshunter.io/developer/1809719085) |

## What reviewers say

### InstaFit

[App page](https://appshunter.io/ios/app/instafit-calorie-tracker/id6754495700)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $14.99 | per month |
| Yearly Pro | $34.99 | per year |


### Fastia

[App page](https://appshunter.io/ios/app/fastia-fasting-tracker/id6763625548)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium per month | $6.99 | per month |
| Premium for a year | $39.99 | per year |


## Frequently asked questions

### Is InstaFit free?

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

### Is Fastia free?

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

### Do InstaFit or Fastia have ads?

Neither InstaFit nor Fastia shows ads.

### Which is updated more often, InstaFit or Fastia?

InstaFit ships an update every 3 days, and Fastia every 3 months. Most recently, InstaFit was updated on October 11, 2026 and Fastia on October 3, 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.*