Ketonix vs GKI Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ketonix
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.
- Measure breath ketone data
- Analyze ketone trends
- Display moving averages
- Add lifestyle annotations
- Register Bluetooth device
- Create user profiles
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Ketonix Software for measure and analyze breath ketone data from a Ketonix® Bluetooth® device. The charts will display a trendline, moving average (MAV) and a possibility to add annotations for lifestyle changes. Here are some video guides demonstrating functions of the app. Register Device https://youtu.be/fnBHSOcu91Y Quickstart https://youtu.be/DdULLGAjd14 Create Profile https://youtu.be/5-xRkqU4ap0 Diet Workflow https://youtu.be/L-u04j_Wbgw Import Recipe https://youtu.be/vV1Z2hKfOX4 Privacy Policy is found at https://www.ketonix.com/PrivacyPolicyKetonixBluetoothApp.pdf
GKI Tracker
Track your glucose and ketone levels to calculate your GKI. Sync data with your health app, review your progress in history, and discover keto-friendly foods with a built-in grocery list manager.
- GKI calculation dashboard
- Health app data sync
- Historical progress tracking
- Keto food discovery
- Keto grocery list management
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- Enter your Glucose and your Ketones to find out your GKI in your dashboard. - Sync your Glucose Level with the Health App - Find all your previous entries in your history and see your improvements. - Discover Keto foods and manage your Keto Grocery list
Screenshots
Verdict
The clearest difference is rating: GKI Tracker at 3.8 against Ketonix's 2.3. GKI Tracker also leads on review sentiment (59% vs 20%). Ketonix's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 5 months). On price, ratings volume, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GKI Tracker holds the better App Store score, 3.8 against 2.3. Both are backed by a comparable volume of ratings — 6 and 16 respectively. Written reviews point the same way: 20% of Ketonix's written reviews are positive against 59% of GKI Tracker's.
Ketonix ships an update every 5 weeks, GKI Tracker every 5 months. The most recent releases landed on October 8, 2026 and October 21, 2026 respectively.
| Parameter | Ketonix | GKI Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (6 ratings) | 3.8 (16 ratings) — better |
| Positive reviews | 20.0% of reviews | 59.1% of reviews — better |
| Number of ratings | 6 | 16 — better |
| Update frequency | Every 5 weeks — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 13.1 |
| Further details — not scored | ||
| Size | 90 MB | 36 MB |
| Age rating | 4+ | 12+ |
| Developer | M Object Oriented Software Engineering AB | Matthias Mellouli |
Customer experience
Ketonix
GKI Tracker
In-app purchases
Ketonix
No in-app purchases
GKI Tracker
No in-app purchases
