# Basalt Lab vs HeavyMuscle

The clearest difference is ads: Basalt Lab at none against HeavyMuscle's shown. HeavyMuscle's advantage is device support (4 vs 2) and iOS requirement (15.1 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Basalt Lab sells 2 in-app purchases, starting at $7.99 per month and HeavyMuscle sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Basalt Lab ships an update every 3 days, HeavyMuscle every 4 days. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Basalt Lab | HeavyMuscle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 98 MB | 86 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Otia Ltd](https://appshunter.io/developer/1896514244) | [Flavio Lima](https://appshunter.io/developer/1672056884) |

## What reviewers say

### Basalt Lab

[App page](https://appshunter.io/ios/app/basalt-lab-workout-tracker/id6767849945)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basalt Lab Pro | $7.99 | per month |
| Basalt Lab Pro | $49.99 | per year |


### HeavyMuscle

[App page](https://appshunter.io/ios/app/heavymuscle/id6772259662)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeavyMuscle Pro Monthly | $3.99 | per month |
| HeavyMuscle Annual Pro | $22.99 | per year |
| HeavyMuscle Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is Basalt Lab free?

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

### Is HeavyMuscle free?

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

### Do Basalt Lab or HeavyMuscle have ads?

HeavyMuscle shows ads; Basalt Lab does not.

### Which is updated more often, Basalt Lab or HeavyMuscle?

Basalt Lab ships an update every 3 days, and HeavyMuscle every 4 days. Most recently, Basalt Lab was updated on September 15, 2026 and HeavyMuscle on September 19, 2026.

---

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