# 22Bio vs saltform

The clearest difference is ads: saltform at none against 22Bio's shown. saltform also leads on iOS requirement (16.0 vs 26.0). On price, update cadence, 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.

22Bio ships an update monthly, saltform every 4 weeks. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 22Bio | saltform |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (15 ratings)](https://appshunter.io/ios/app/saltform/id6780672891/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 37 MB | 38 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Mosaic-bio, Ltd.](https://appshunter.io/developer/1818601785) | [saltform LLC](https://appshunter.io/developer/6780672893) |

## What reviewers say

### 22Bio

[App page](https://appshunter.io/ios/app/22bio/id6746808216)

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

**In-app purchases:** none


### saltform

[App page](https://appshunter.io/ios/app/saltform/id6780672891)

Easily browse and purchase class packs or membership options. View the schedule, filter classes by type, and manage your reservations to stay organized and committed to your fitness goals.

**Highlights:** Purchase class packs and memberships, Browse class schedule, Filter classes by type, Manage class reservations, Track upcoming classes

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

**In-app purchases:** none


## Frequently asked questions

### Is 22Bio free?

22Bio is free to download, with no in-app purchases.

### Is saltform free?

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

### Do 22Bio or saltform have ads?

22Bio shows ads; saltform does not.

### Which is updated more often, 22Bio or saltform?

22Bio ships an update monthly, and saltform every 4 weeks. Most recently, 22Bio was updated on October 8, 2026 and saltform on October 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.*