# gravitycoach vs SpiroFit

The clearest difference is in-app purchases: SpiroFit at none against gravitycoach's 8. SpiroFit also leads on update cadence (every 3 weeks vs every 6 months). gravitycoach's advantage is iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. gravitycoach sells 8 one-off in-app purchases. SpiroFit asks for nothing beyond the download.

gravitycoach ships an update every 6 months, SpiroFit every 3 weeks. The most recent releases landed on September 8, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | gravitycoach | SpiroFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spirofit/id6475291331/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 50 MB | 8 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Manuel Guarrera](https://appshunter.io/developer/1597998629) | [SENDSOR GmbH](https://appshunter.io/developer/1723823291) |

## What reviewers say

### gravitycoach

[App page](https://appshunter.io/ios/app/gravitycoach/id1597998627)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| eBook I Mehr als nur Fitness! | Free | one-time |
| Kabelzug Workout – Teaser | Free | one-time |
| Kettlebell Power Workout | $34.99 | one-time |
| FLEX & FLEISCH - Krafttraining | $49.99 | one-time |
| Gravitas Finest Masterclass 2 | $49.99 | one-time |
| Power of Breath | $179.99 | one-time |
| Hohlkreuz besser verstehen 3.0 | $249.00 | one-time |
| Gravity Starter Coaching | $599.99 | one-time |


### SpiroFit

[App page](https://appshunter.io/ios/app/spirofit/id6475291331)

Track key respiratory and heart metrics live during workouts like running or cycling. Analyze professional data for optimal training intensity. Suitable for coaches, professional athletes, and fitness enthusiasts.

**Highlights:** Live respiratory rate tracking, Live heart rate monitoring, Tidal volume measurement, O2 consumption tracking, CO2 output tracking, Professional data analysis, Real-time training feedback

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

**In-app purchases:** none


## Frequently asked questions

### Is gravitycoach free?

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

### Is SpiroFit free?

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

### Do gravitycoach or SpiroFit have ads?

Neither gravitycoach nor SpiroFit shows ads.

### Which is updated more often, gravitycoach or SpiroFit?

gravitycoach ships an update every 6 months, and SpiroFit every 3 weeks. Most recently, gravitycoach was updated on September 8, 2026 and SpiroFit on August 25, 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.*