# Compound3 vs STCfit

The clearest difference is ads: STCfit at none against Compound3's shown. Compound3's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, 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.

Compound3 ships an update every 4 weeks, STCfit fortnightly. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Compound3 | STCfit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stcfit/id6451321931/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 70 MB | 74 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Compound 3 Pty Ltd](https://appshunter.io/developer/1779184417) | [STCfit](https://appshunter.io/developer/1697535889) |

## What reviewers say

### Compound3

[App page](https://appshunter.io/ios/app/compound3/id1524174208)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### STCfit

[App page](https://appshunter.io/ios/app/stcfit/id6451321931)

This app offers comprehensive training programs for all fitness levels, from beginners to athletes. It helps users transform their physique, enhance strength, and achieve fitness goals. Syncs with HealthKit for unified health data tracking.

**Highlights:** Comprehensive training programs, All fitness levels catered for, Physique transformation, Strength and performance enhancement, HealthKit data synchronization, Nutrition, steps, and bodyweight tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Compound3 free?

Compound3 is free to download, with no in-app purchases.

### Is STCfit free?

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

### Do Compound3 or STCfit have ads?

Compound3 shows ads; STCfit does not.

### Which is updated more often, Compound3 or STCfit?

Compound3 ships an update every 4 weeks, and STCfit fortnightly. Most recently, Compound3 was updated on October 8, 2026 and STCfit on October 24, 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.*