# Compound Theory vs PR Foundry

The clearest difference is in-app purchases: PR Foundry at none against Compound Theory's 3. Compound Theory's advantage is update cadence (every 6 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Compound Theory sells 3 in-app purchases, starting at $3.99 per month. PR Foundry asks for nothing beyond the download.

Compound Theory ships an update every 6 days, PR Foundry fortnightly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Compound Theory | PR Foundry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/compound-theory-lifting/id6762104851/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Freemium | — |
| Size | 16 MB | 15 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shane Young](https://appshunter.io/developer/1892931800) | [Draxis Inc](https://appshunter.io/developer/6773371380) |

## What reviewers say

### Compound Theory

[App page](https://appshunter.io/ios/app/compound-theory-lifting/id6762104851)

This strength training tracker offers a vast library of proven workout programs and allows users to build their own custom routines. It provides insights into muscle recovery, strength standards, and integrates with Apple Health for a comprehensive view of fitness progress.

**Highlights:** Extensive library of pre-built strength programs, Customizable workout routine builder, Muscle recovery tracking with visual indicators, Strength standards comparison, Apple Health integration for recovery insights, One-tap set completion and auto-progression, Apple Watch workout tracking

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compound Theory Pro | $3.99 | per month |
| Compound Theory Pro | $29.99 | per year |
| Compound Theory Pro | $99.99 | one-time |


### 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


## Frequently asked questions

### Is Compound Theory free?

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

### Is PR Foundry free?

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

### Do Compound Theory or PR Foundry have ads?

Neither Compound Theory nor PR Foundry shows ads.

### Which is updated more often, Compound Theory or PR Foundry?

Compound Theory ships an update every 6 days, and PR Foundry fortnightly. Most recently, Compound Theory was updated on November 5, 2026 and PR Foundry on November 5, 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.*