# KetonixGO vs Sleep Harmony

The clearest difference is update cadence: KetonixGO at every 4 days against Sleep Harmony's every 7 months. KetonixGO also leads on iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

KetonixGO ships an update every 4 days, Sleep Harmony every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KetonixGO | Sleep Harmony |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ketonixgo/id1465875336/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 7 months |
| Monetization | Free | — |
| Size | 30 MB | 144 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [M Object Oriented Software Engineering AB](https://appshunter.io/developer/498983792) | [Ergomotion, Inc.](https://appshunter.io/developer/765697157) |

## What reviewers say

### KetonixGO

[App page](https://appshunter.io/ios/app/ketonixgo/id1465875336)

This app connects to a Ketonix device to measure and analyze breath ketone levels. It displays your last six readings and a trendline, helping you track your progress. A privacy policy is available for review.

**Highlights:** Measure breath ketone data, Analyze breath ketone data, Connects via Bluetooth, Charts last 6 measures, Adds a trendline

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleep Harmony

[App page](https://appshunter.io/ios/app/sleep-harmony/id6743784636)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KetonixGO free?

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

### Is Sleep Harmony free?

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

### Do KetonixGO or Sleep Harmony have ads?

Neither KetonixGO nor Sleep Harmony shows ads.

### Which is updated more often, KetonixGO or Sleep Harmony?

KetonixGO ships an update every 4 days, and Sleep Harmony every 7 months. Most recently, KetonixGO was updated on October 24, 2026 and Sleep Harmony on October 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.*