# Ketonix vs CRPM Trainer

The clearest difference is iOS requirement: Ketonix at 10.0 against CRPM Trainer's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ketonix ships an update every 5 weeks, CRPM Trainer every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Ketonix | CRPM Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (6 ratings)](https://appshunter.io/ios/app/ketonix/id1239051593/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 90 MB | 177 MB |
| Requires iOS | **10.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [M Object Oriented Software Engineering AB](https://appshunter.io/developer/498983792) | [Rare Wellness, LLC](https://appshunter.io/developer/1589223210) |

## What reviewers say

### Ketonix

[App page](https://appshunter.io/ios/app/ketonix/id1239051593)

This app measures and analyzes breath ketone data from a connected Bluetooth device. It displays trendlines, moving averages, and allows for annotations of lifestyle changes to track progress. Video guides are available for various functions.

**Highlights:** Measure breath ketone data, Analyze ketone trends, Display moving averages, Add lifestyle annotations, Register Bluetooth device, Create user profiles

**Features:** macOS Compatibility

**In-app purchases:** none


### CRPM Trainer

[App page](https://appshunter.io/ios/app/crpm-trainer/id6749076675)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Ketonix free?

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

### Is CRPM Trainer free?

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

### Do Ketonix or CRPM Trainer have ads?

Neither Ketonix nor CRPM Trainer shows ads.

### Which is updated more often, Ketonix or CRPM Trainer?

Ketonix ships an update every 5 weeks, and CRPM Trainer every 6 weeks. Most recently, Ketonix was updated on October 24, 2026 and CRPM Trainer on October 24, 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.*