# SONNYS GYM vs ROCKET Endurance Training

The clearest difference is in-app purchases: SONNYS GYM at none against ROCKET Endurance Training's 2. ROCKET Endurance Training's advantage is update cadence (weekly vs every 9 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ROCKET Endurance Training sells 2 in-app purchases, starting at $19.95 per month. SONNYS GYM asks for nothing beyond the download.

SONNYS GYM ships an update every 9 months, ROCKET Endurance Training weekly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SONNYS GYM | ROCKET Endurance Training |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 72 MB | 150 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hunt Group Enterprises Pty Ltd](https://appshunter.io/developer/1625592777) | [Rocket Endurance Pty Ltd](https://appshunter.io/developer/1881787061) |

## What reviewers say

### SONNYS GYM

[App page](https://appshunter.io/ios/app/sonnys-gym/id1625592775)

**Features:** macOS Compatibility

**In-app purchases:** none


### ROCKET Endurance Training

[App page](https://appshunter.io/ios/app/rocket-endurance-training/id6759940607)

This adaptive training app creates personalized, multi-discipline plans for athletes balancing various sports like triathlon, HYROX, and running. It automatically adjusts your schedule based on your life events and training progress, offering the intelligence of a personal coach at a fraction of the cost.

**Highlights:** Personalized multi-discipline training plans, Adaptive load management, Automatic schedule adjustments, Strava and watch sync, Supports up to 10 races annually, Built by coaches and scientists

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Monthly | $19.95 | per month |
| Rocket Annual | $129.99 | per year |


## Frequently asked questions

### Is SONNYS GYM free?

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

### Is ROCKET Endurance Training free?

ROCKET Endurance Training is free to download, with in-app purchases available.

### Do SONNYS GYM or ROCKET Endurance Training have ads?

Neither SONNYS GYM nor ROCKET Endurance Training shows ads.

### Which is updated more often, SONNYS GYM or ROCKET Endurance Training?

SONNYS GYM ships an update every 9 months, and ROCKET Endurance Training weekly. Most recently, SONNYS GYM was updated on October 6, 2026 and ROCKET Endurance Training on October 8, 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.*