# KetonixGO vs SmartMS3

The clearest difference is review sentiment: SmartMS3 at 100% against KetonixGO's 0%. SmartMS3 also leads on rating (5.0 vs 1.0) and ratings volume (6 vs 1). KetonixGO's advantage is update cadence (every 4 days vs every 6 months) and iOS requirement (9.0 vs 13.4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SmartMS3 holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: SmartMS3 has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of KetonixGO's written reviews are positive against 100% of SmartMS3's.

KetonixGO ships an update every 4 days, SmartMS3 every 6 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | KetonixGO | SmartMS3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/ketonixgo/id1465875336/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/smartms3/id1645251903/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 months |
| Monetization | Free | Free |
| Size | 30 MB | 22 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [M Object Oriented Software Engineering AB](https://appshunter.io/developer/498983792) | [Smart MS3 LLC](https://appshunter.io/developer/1527923246) |

## 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


### SmartMS3

[App page](https://appshunter.io/ios/app/smartms3/id1645251903)

This app utilizes EMG sensor technology to monitor muscle activation during training and recovery. It provides insights into how your muscles are firing to optimize your fitness journey.

**Highlights:** EMG sensor technology, Muscle firing tracking, Training analysis, Recovery monitoring, Fitness optimization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KetonixGO free?

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

### Is SmartMS3 free?

SmartMS3 is free to download, with no in-app purchases.

### Which has better reviews, KetonixGO or SmartMS3?

SmartMS3 is rated higher. KetonixGO averages 1.0 out of 5 from 1 ratings, while SmartMS3 averages 5.0 from 6 ratings.

### Do KetonixGO or SmartMS3 have ads?

Neither KetonixGO nor SmartMS3 shows ads.

### Which is updated more often, KetonixGO or SmartMS3?

KetonixGO ships an update every 4 days, and SmartMS3 every 6 months. Most recently, KetonixGO was updated on November 3, 2026 and SmartMS3 on November 3, 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.*