KETOSCAN vs Nurse Hatty
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
Nurse Hatty
Access product information, including guides, usage instructions, and video links. Track progress on select items to support your diet and exercise goals. Designed for adults interested in health and wellness products.
- Product guides
- Usage instructions
- How-to-use video links
- Progress trackers
- Package inserts
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Nurse Hatty offers products for various products, The target audience is adult men and women who are interested in helping themselves through diet, exercise, and likewise products. The main purpose of the Nurse Hatty app is to give product information at their fingertips, including guides, package inserts, how-to-use video links, as well as progress trackers on select Nurse Hatty products. The customers will have access to these things through the functionality of instructions for use, videos, progress tracker, and package inserts.
Screenshots
Verdict
The clearest difference is update cadence: KETOSCAN at every 4 weeks against Nurse Hatty's every 14 months. KETOSCAN also leads on ratings volume (16 vs 4) and iOS requirement (12.0 vs 15.6). Nurse Hatty's advantage is rating (3.0 vs 2.6) and review sentiment (50% vs 32%). On price, ads, in-app purchases and monetization model 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.
Nurse Hatty holds the better App Store score, 3.0 against 2.6. Both are backed by a comparable volume of ratings — 16 and 4 respectively. Written reviews point the same way: 32% of KETOSCAN's written reviews are positive against 50% of Nurse Hatty's.
KETOSCAN ships an update every 4 weeks, Nurse Hatty every 14 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | KETOSCAN | Nurse Hatty |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (16 ratings) | 3.0 (4 ratings) — better |
| Positive reviews | 31.6% of reviews | 50.0% of reviews — better |
| Number of ratings | 16 — better | 4 |
| Update frequency | Every 4 weeks — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 53 MB | 15 MB |
| Age rating | 12+ | 4+ |
| Developer | SENTECH KOREA CORP | Hatty, Inc. |
Customer experience
KETOSCAN
Nurse Hatty
In-app purchases
KETOSCAN
No in-app purchases
Nurse Hatty
No in-app purchases









