# Harmony Gymnastics vs IronStack

The clearest difference is in-app purchases: Harmony Gymnastics at none against IronStack's 3. Harmony Gymnastics also leads on iOS requirement (14.0 vs 16.4). IronStack's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. IronStack sells 3 in-app purchases, starting at $2.99 per month. Harmony Gymnastics asks for nothing beyond the download.

Harmony Gymnastics ships an update every 2 months, IronStack every 4 days. Both last shipped on September 30, 2026.

## The numbers

| Metric | Harmony Gymnastics | IronStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/ironstack-simple-workout-log/id6741048202/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 69 MB | 59 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Connect for sports marketing LLC.](https://appshunter.io/developer/1469633397) | [ZanaWorks LLC](https://appshunter.io/developer/1512608222) |

## What reviewers say

### Harmony Gymnastics

[App page](https://appshunter.io/ios/app/harmony-gymnastics/id6502964335)

**Features:** macOS Compatibility

**In-app purchases:** none


### IronStack

[App page](https://appshunter.io/ios/app/ironstack-simple-workout-log/id6741048202)

Log your gym workouts quickly and efficiently with this streamlined strength training app. Track progress, set personal records, and customize exercises without unnecessary clutter or account creation. Offers optional Pro features for advanced insights and AI-generated workouts.

**Highlights:** Fast workout logging, Automatic PR detection, Built-in rest timer, Customizable exercises, Apple Watch integration, Workout history search, Optional AI workout generation

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |
| IronStack Lifetime Unlock | $39.99 | one-time |


## Frequently asked questions

### Is Harmony Gymnastics free?

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

### Is IronStack free?

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

### Do Harmony Gymnastics or IronStack have ads?

Neither Harmony Gymnastics nor IronStack shows ads.

### Which is updated more often, Harmony Gymnastics or IronStack?

Harmony Gymnastics ships an update every 2 months, and IronStack every 4 days. Most recently, Harmony Gymnastics was updated on September 30, 2026 and IronStack on September 30, 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.*