# PR Foundry vs 5/3/1 Strength Trainer

The clearest difference is iOS requirement: 5/3/1 Strength Trainer at 15.0 against PR Foundry's 17.0. 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.

## The numbers

| Metric | PR Foundry | 5/3/1 Strength Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 15 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Draxis Inc](https://appshunter.io/developer/6773371380) | [Abel Soares](https://appshunter.io/developer/6816039360) |

## What reviewers say

### PR Foundry

[App page](https://appshunter.io/ios/app/pr-foundry/id6773371378)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 5/3/1 Strength Trainer

[App page](https://appshunter.io/ios/app/531-strength-trainer/id6816039357)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PR Foundry free?

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

### Is 5/3/1 Strength Trainer free?

5/3/1 Strength Trainer is free to download, with no in-app purchases.

### Do PR Foundry or 5/3/1 Strength Trainer have ads?

Neither PR Foundry nor 5/3/1 Strength Trainer shows ads.

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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.*