# Onyx Coach vs Trejn

The clearest difference is in-app purchases: Trejn at none against Onyx Coach's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Onyx Coach sells 6 in-app purchases, starting at $9.99 per month. Trejn asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on November 4, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Onyx Coach | Trejn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/onyx-coach-workout-tracker/id6737855506/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | Every 9 days |
| Monetization | Freemium | — |
| Size | 153 MB | 35 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Coachito LLC](https://appshunter.io/developer/1873867082) | [Roman Janovec](https://appshunter.io/developer/6791120098) |

## What reviewers say

### Onyx Coach

[App page](https://appshunter.io/ios/app/onyx-coach-workout-tracker/id6737855506)

This app provides structured workout plans and a fast lifting tracker to help users achieve progressive overload and visualize strength gains. It offers pre-built routines and a custom workout builder, acting as a digital replacement for paper logs.

**Highlights:** Structured workout program library, Fast and flexible lifting tracker, Custom workout builder, Progressive overload visualization, Rest timer and plate calculator, Gym set tracking

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onyx Coach Premium (Monthly) | $9.99 | per month |
| Onyx Coach Premium (Monthly) | $9.99 | per month |
| Premium Monthly | $9.99 | per month |
| Onyx Coach Premium (Six months) | $64.99 | per 6 months |
| Onyx Coach Premium (Yearly) | $79.00 | per year |
| Premium Yearly | $79.00 | per year |


### Trejn

[App page](https://appshunter.io/ios/app/trejn/id6791120096)

**In-app purchases:** none


## Frequently asked questions

### Is Onyx Coach free?

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

### Is Trejn free?

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

### Do Onyx Coach or Trejn have ads?

Neither Onyx Coach nor Trejn shows ads.

### Which is updated more often, Onyx Coach or Trejn?

Onyx Coach ships an update every 9 days, and Trejn every 9 days. Most recently, Onyx Coach was updated on November 4, 2026 and Trejn on October 29, 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.*