# KetoAir vs Phy Partner

The clearest difference is rating: Phy Partner at 5.0 against KetoAir's 1.5. On price, ratings volume, update cadence and ads there is nothing between them.

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

Phy Partner holds the better App Store score, 5.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

KetoAir ships an update every 2 months, Phy Partner every 6 weeks. The most recent releases landed on October 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | KetoAir | Phy Partner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/ketoair/id1671355214/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/phy-partner/id6753209215/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 60 MB | 29 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qi Diagnostics Limited](https://appshunter.io/developer/1636454031) | [Phyxd, Inc.](https://appshunter.io/developer/1586114205) |

## What reviewers say

### KetoAir

[App page](https://appshunter.io/ios/app/ketoair/id1671355214)

This device and companion app help you monitor your body's fat-burning status by measuring acetone levels in your breath. Get instant, accurate results to understand how your diet and exercise affect your ketosis.

**Highlights:** Instant breath acetone measurement, Accurate real acetone sensor, Bluetooth device connectivity, Log ketosis records, Monitor fat-burning status, Track diet and exercise impact

**Features:** macOS Compatibility

**In-app purchases:** none


### Phy Partner

[App page](https://appshunter.io/ios/app/phy-partner/id6753209215)

This app uses advanced computer vision on your iPhone or iPad to capture precise 3D posture scans. It's designed for professionals to easily assess movement health and integrate with a companion platform for client reports.

**Highlights:** Professional 3D posture scanning, Advanced computer vision technology, No special equipment required, Seamless integration with Phy Health app, Fast and accurate scan capture, Simple interface for professionals

**In-app purchases:** none


## Frequently asked questions

### Is KetoAir free?

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

### Is Phy Partner free?

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

### Which has better reviews, KetoAir or Phy Partner?

Phy Partner is rated higher. KetoAir averages 1.5 out of 5 from 2 ratings, while Phy Partner averages 5.0 from 1 ratings.

### Do KetoAir or Phy Partner have ads?

Neither KetoAir nor Phy Partner shows ads.

### Which is updated more often, KetoAir or Phy Partner?

KetoAir ships an update every 2 months, and Phy Partner every 6 weeks. Most recently, KetoAir was updated on October 6, 2026 and Phy Partner on October 30, 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.*