# Compound Theory vs Stone

The clearest difference is update cadence: Compound Theory at every 6 days against Stone's every 3 weeks. Compound Theory also leads on device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Compound Theory sells 3 in-app purchases, starting at $3.99 per month and Stone sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Compound Theory against 5.0 for Stone. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Compound Theory ships an update every 6 days, Stone every 3 weeks. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Compound Theory | Stone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/compound-theory-lifting/id6762104851/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/stone-5x5-workout-tracker/id6776695771/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 16 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shane Young](https://appshunter.io/developer/1892931800) | [Signal Creative, LLC](https://appshunter.io/developer/1869269509) |

## 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 |


### Stone

[App page](https://appshunter.io/ios/app/stone-5x5-workout-tracker/id6776695771)

This app is a dedicated tracker for the 5x5 barbell strength training program. It guides you through weight selection, plate loading, rest periods, and progression. Your data is stored locally, and you can import existing history for free.

**Highlights:** Automatic progression and deloads, Customizable sets, reps, and weight jumps, Plate calculator for loading, Guided warm-up sets and rest timer, Lift substitution and accessory work, History, progress, and PR tracking, Local data storage and export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Workout Tracking | $9.99 | one-time |


## Frequently asked questions

### Is Compound Theory free?

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

### Is Stone free?

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

### Which has better reviews, Compound Theory or Stone?

Compound Theory and Stone are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Compound Theory or Stone have ads?

Neither Compound Theory nor Stone shows ads.

### Which is updated more often, Compound Theory or Stone?

Compound Theory ships an update every 6 days, and Stone every 3 weeks. Most recently, Compound Theory was updated on October 24, 2026 and Stone on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*