# Strength Factory vs The Progress Lab

The clearest difference is update cadence: The Progress Lab at every 3 months against Strength Factory's every 13 months. The Progress Lab also leads on device support and iOS requirement (13.0 vs 15.0). 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.

Strength Factory ships an update every 13 months, The Progress Lab every 3 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Strength Factory | The Progress Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Size | 210 MB | 195 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Strength Factory B.V.](https://appshunter.io/developer/1802156884) | [The Progress Lab B.V.](https://appshunter.io/developer/1814208921) |

## What reviewers say

### Strength Factory

[App page](https://appshunter.io/ios/app/strength-factory/id6743313508)

**In-app purchases:** none


### The Progress Lab

[App page](https://appshunter.io/ios/app/the-progress-lab/id6753338332)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Strength Factory free?

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

### Is The Progress Lab free?

The Progress Lab is free to download, with no in-app purchases.

### Which is updated more often, Strength Factory or The Progress Lab?

Strength Factory ships an update every 13 months, and The Progress Lab every 3 months. Most recently, Strength Factory was updated on October 1, 2026 and The Progress Lab on October 13, 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.*