KETOSCAN vs Slimpal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KETOSCAN
This device measures ketone levels through breath analysis, indicating body fat decomposition. It's ideal for those on ketogenic diets or seeking to monitor fat loss scientifically. Data can be integrated with the Health app for comprehensive tracking.
- Breath ketone measurement
- Body fat decomposition rate
- Ketogenic diet support
- Health app integration
- Scientific diet tracking
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Equipped with a high-precision sensor, it measures the state of the ketone by simple breathing The ketone meter. 1. What is KETOSCAN? KETOSCAN is the first portable acetone gas analyzer in Korea, Acetone, which is one of the ketone bodies produced when decomposing body fat, flows through the blood vessels and is discharged through the lungs through the respiration. It is a product that can measure the blood ketone concentration and the body fat decomposition rate by measuring the concentration of the breathing acetone gas. 2. Who needs a KETOSCAN? - Low Carb High Fat Diet (LCHF / Ketogenic Diet) When you need to measure your ketone production! - When you lose body fat through low-calorie diet, check for the scientific diet check that only the body fat is decomposed not the muscle! - For the purpose of ketosis check! 3. Integration with the Health app - KETOSCAN read data from health app such as 'Active Energy', 'Dietary Energy', 'Weight' - It is used for your records. - You can allow to read at Settings -> Privacy -> Health -> KETOSCAN
Slimpal
Track your body composition and health metrics by connecting to smart scales and tape measures. Sync your data with popular fitness apps to get a comprehensive view of your well-being. Monitor weight, BMI, body fat, muscle mass, and more.
- Measure weight and body circumference
- Track BMI and body fat percentage
- Monitor muscle mass and bone mass
- Record BMR and metabolic age
- Sync with Apple HealthKit and Fitbit
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Slimpal is an application for improving your health. This app can help you connect Slimpal Smart Scale/tape measure to measure and record weight/body circumference, including: • Weight • BMI • Body Fat% • Fat-free Body Weight • Subcutaneous Fat • Visceral Fat • Body Water • Skeletal Muscle • Muscle Mass • Bone Mass • Protein • BMR • Metabolic Age • body circumference The Slimpal app connects with many popular fitness apps such as Apple HealthKit, Fitbit and etc. Since the privacy of your health data is very inportant, Slimpal has an entry point where you can choose to sync your data to these fitness apps. No data will be synced to a third party until you choose it. Connect with us Email: support@health-vast.com
Screenshots
Verdict
KETOSCAN and Slimpal both sit at 2.6 stars, but that hides the real split: 32% of KETOSCAN's written reviews are positive against 20% of Slimpal's. On price, rating, ratings volume and update cadence 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.
KETOSCAN holds the better App Store score, 2.6 against 2.5. Both are backed by a comparable volume of ratings — 16 and 31 respectively. Written reviews point the same way: 32% of KETOSCAN's written reviews are positive against 20% of Slimpal's.
KETOSCAN ships an update every 4 weeks, Slimpal every 6 weeks. Both last shipped on October 24, 2026.
| Parameter | KETOSCAN | Slimpal |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (16 ratings) — better | 2.5 (31 ratings) |
| Positive reviews | 31.6% of reviews — better | 20.0% of reviews |
| Number of ratings | 16 | 31 — better |
| Update frequency | Every 4 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 53 MB | 107 MB |
| Age rating | 12+ | 4+ |
| Developer | SENTECH KOREA CORP | HealthVast Ltd. |
Customer experience
KETOSCAN
Slimpal
In-app purchases
KETOSCAN
No in-app purchases
Slimpal
No in-app purchases









