# SaltLab Studio vs Flex Fusion Studios

The clearest difference is update cadence: SaltLab Studio at every 3 weeks against Flex Fusion Studios's every 6 months. SaltLab Studio also leads on iOS requirement (14.0 vs 16.4). Flex Fusion Studios's advantage is device support. On price and in-app purchases there is nothing between them.

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

SaltLab Studio ships an update every 3 weeks, Flex Fusion Studios every 6 months. The most recent releases landed on September 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SaltLab Studio | Flex Fusion Studios |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Size | 128 MB | 121 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Dayer Ventures, LLC](https://appshunter.io/developer/1821255188) | [Sutra Fitness, Inc.](https://appshunter.io/developer/914371834) |

## What reviewers say

### SaltLab Studio

[App page](https://appshunter.io/ios/app/saltlab-studio/id6747404153)

**In-app purchases:** none


### Flex Fusion Studios

[App page](https://appshunter.io/ios/app/flex-fusion-studios/id6752585491)

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

**In-app purchases:** none


## Frequently asked questions

### Is SaltLab Studio free?

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

### Is Flex Fusion Studios free?

Flex Fusion Studios is free to download, with no in-app purchases.

### Which is updated more often, SaltLab Studio or Flex Fusion Studios?

SaltLab Studio ships an update every 3 weeks, and Flex Fusion Studios every 6 months. Most recently, SaltLab Studio was updated on September 13, 2026 and Flex Fusion Studios on September 8, 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.*