# Stark Kettlebell vs Onyx Physique

The clearest difference is price: Onyx Physique at Free against Stark Kettlebell's $4.99. Onyx Physique also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.0 vs 15.1). Stark Kettlebell's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Onyx Physique is free to download; Stark Kettlebell costs $4.99 up front. Onyx Physique sells 1 in-app purchase, starting at $3.99 per month. Stark Kettlebell asks for nothing beyond the download.

Stark Kettlebell ships an update every 3 months, Onyx Physique every 9 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Stark Kettlebell | Onyx Physique |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.7 (544 ratings)](https://appshunter.io/ios/app/stark-kettlebell/id474762013/reviews)** | — |
| Number of ratings | **544** | — |
| Positive reviews | 84.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 57 MB | 199 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Postra AB](https://appshunter.io/developer/1807937957) | [Julien Genonceau](https://appshunter.io/developer/1782754340) |

## What reviewers say

### Stark Kettlebell

[App page](https://appshunter.io/ios/app/stark-kettlebell/id474762013)

This app provides a comprehensive guide to kettlebell training with HD video demonstrations of 51 exercises. Users can create custom workouts, track progress, and utilize built-in timers for various training styles like Tabata and HIIT. It integrates with Apple Health to log workouts and burned calories.

**Highlights:** 51 HD video exercises, Custom workout creation, Step-by-step workout guidance, Tabata, HIIT, and Circuit timers, Progress tracking and rewards, Targeted muscle group exercises, Apple Health integration

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

**In-app purchases:** none

**What reviewers like**

- 👍 Customizable workouts
- 🎥 Clear exercise videos
- 🕰️ Effective timer and interval options
- 🤝 Integrates with Health app
- 💪 Challenging and effective workouts

**What reviewers complain about**

- 🤔 Limited pre-built workout options
- 🔀 Difficulty rearranging custom workouts
- 🔇 Lack of audio cues/guidance during workouts
- 🤖 Unintuitive interface
- 💰 Expensive for limited content

**Reported bugs**

- Videos not downloading properly
- App crashing on launch for some users

**Requested features**

- More pre-built workout options
- Ability to rearrange custom workouts
- Audio cues for exercises and timing
- Improved workout customization options
- Integration with music/fitness apps


### Onyx Physique

[App page](https://appshunter.io/ios/app/onyx-physique/id6738883942)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onyx Premium | $3.99 | per month |


## Frequently asked questions

### Is Stark Kettlebell free?

Stark Kettlebell costs $4.99, with no in-app purchases.

### Is Onyx Physique free?

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

### Do Stark Kettlebell or Onyx Physique have ads?

Neither Stark Kettlebell nor Onyx Physique shows ads.

### Which is updated more often, Stark Kettlebell or Onyx Physique?

Stark Kettlebell ships an update every 3 months, and Onyx Physique every 9 days. Most recently, Stark Kettlebell was updated on October 30, 2026 and Onyx Physique on October 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.*