# KetonixGO vs HealthyFast

The clearest difference is in-app purchases: KetonixGO at none against HealthyFast's 2. KetonixGO also leads on update cadence (every 4 days vs every 8 days) and iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. HealthyFast sells 2 in-app purchases, starting at $2.99 per month. KetonixGO asks for nothing beyond the download.

KetonixGO ships an update every 4 days, HealthyFast every 8 days. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | KetonixGO | HealthyFast |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 8 days |
| Monetization | Free | — |
| Size | 30 MB | 49 MB |
| Requires iOS | **9.0** | 15.0 |
| 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) | [Jimmy Hansen](https://appshunter.io/developer/6803673426) |

## 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


### HealthyFast

[App page](https://appshunter.io/ios/app/healthyfast/id6803673424)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Display Name: Premium Yearly | $22.99 | per year |


## Frequently asked questions

### Is KetonixGO free?

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

### Is HealthyFast free?

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

### Do KetonixGO or HealthyFast have ads?

Neither KetonixGO nor HealthyFast shows ads.

### Which is updated more often, KetonixGO or HealthyFast?

KetonixGO ships an update every 4 days, and HealthyFast every 8 days. Most recently, KetonixGO was updated on October 12, 2026 and HealthyFast on October 16, 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.*