Comparison

KETOSCAN vs Nurse Hatty

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Breath ketone measurement
  • Body fat decomposition rate
  • Ketogenic diet support
  • Health app integration
  • Scientific diet tracking
Features
Read full description

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

About

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.

Highlights
  • Product guides
  • Usage instructions
  • How-to-use video links
  • Progress trackers
  • Package inserts
Features
Read full description

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

KETOSCAN4 screens
Nurse Hatty4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
KETOSCAN versus Nurse Hatty: the parameters behind the verdict, then further details
ParameterKETOSCANNurse Hatty
PriceFreeFree
Rating2.6 (16 ratings)3.0 (4 ratings) — better
Positive reviews31.6% of reviews50.0% of reviews — better
Number of ratings16 — better4
Update frequencyEvery 4 weeks — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size53 MB15 MB
Age rating12+4+
DeveloperSENTECH KOREA CORPHatty, Inc.

Customer experience

KETOSCAN

All ratings15 ratings
Positive40.0%
Neutral6.7%
Negative53.3%
Written reviews19 reviews
Positive31.6%
Neutral5.3%
Negative63.2%

Nurse Hatty

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

KETOSCAN

No in-app purchases

None

Nurse Hatty

No in-app purchases

Questions

Is KETOSCAN free?
KETOSCAN is free to download, with no in-app purchases.
Is Nurse Hatty free?
Nurse Hatty is free to download, with no in-app purchases.
Which has better reviews, KETOSCAN or Nurse Hatty?
Nurse Hatty is rated higher. KETOSCAN averages 2.6 out of 5 from 16 ratings, while Nurse Hatty averages 3.0 from 4 ratings.
Do KETOSCAN or Nurse Hatty have ads?
Neither KETOSCAN nor Nurse Hatty shows ads.
Which is updated more often, KETOSCAN or Nurse Hatty?
KETOSCAN ships an update every 4 weeks, and Nurse Hatty every 14 months. Most recently, KETOSCAN was updated on November 2, 2026 and Nurse Hatty on November 3, 2026.

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