# KETOSCAN — user reviews > 19 indexed App Store user reviews of KETOSCAN by Sentech Korea Corp., rated 2.73/5 from 15 ratings. - Source: https://appshunter.io/ios/app/ketoscan/id1446527194/reviews - App overview in markdown: https://appshunter.io/ios/app/ketoscan/id1446527194.md - Rating breakdown: 5★ 5 · 4★ 1 · 3★ 1 · 2★ 1 · 1★ 7 ## Newest reviews (1 of 19) ### 1/5 — App not working *2019-07-02* I cannot even get past the first page! When I try to register for an account i keep getting an error message about the server not being found. When I try to sign in a a guest the app crashes . Help!! ## Most critical reviews (10 lowest-rated) ### 1/5 — App doesn’t work. *2026-02-21* I’m not sure what the behavior of this app is supposed to be but logon fails and thus the app is a non starter. For me, this has been on going for at least 3 months and it is integral to the overall process and experience. ### 1/5 — Terrible App *2025-08-06* As CuttyNYC said 2 years ago; The device is great, the app is terrible. I’m sad that the app has been this bad for over 2 years. That suggests they aren’t trying to make it any better. ### 1/5 — Do not buy this *2023-10-19, version 10.8* Totally useless. What a rip off. The app doesn’t pair the device. I will try to return my device. This is a CON. ### 1/5 — Worst App *2023-01-27* The device is very good. This app is absolutely horrifying considering how good the device is. ### 1/5 — App is broken *2020-06-20, version 5.6* Cant sign in even as a guest ### 1/5 — Dreadful App *2020-05-20, version 5.4* Really infuriating and crap. You really need to work on this ### 1/5 — Server cannot be found *2020-04-21, version 5.4* This app needs work! ### 1/5 — Host server not found error *2020-01-31* Starting from yesterday, can’t get the access to the app. Fix this issue please. I have a lot of date stored inside my account. ### 1/5 — „Server cannot be found“ *2020-01-30* „Server cannot be found“ - all of a sudden the app freezes with above error message and I can neither log in or use it. ### 1/5 — KETOSCAN Mini *2019-12-06, version 4.12* Hopeless, app won’t connect to device, appears no one knows why. ## Most praised reviews (8 highest-rated) ### 5/5 — Love this *2024-06-14, version 10.8* I got worried when I saw a previous (and only) review but any bugs must have been fixed because this works perfectly. Love it! ### 5/5 — Helpful *2021-08-06* I’m really glad I purchased the ketoscan mini. I’m realizing I didn’t really have as much of a handle on understanding ketosis as I thought I did. Monitoring is key. And I love that I can do that without pricking myself. I’d like to have a lot more information on how the keto levels in the app were arrived at. I’d also very much appreciate a dark mode for this app (get rid of the the bright white screens). Thanks! ### 5/5 — Great *2020-09-18, version 6.0* App works fantastic. The Ketoscan mini has been great! ### 5/5 — Quantify thyself *2020-04-26* I’ve been enjoying tracking my keto progress more directly than the scale. I test twice a day, before waking and mid-evening. If my numbers stay good I know the scale will follow. ### 5/5 — Happy with this clever unit *2019-08-07* Reliable-when I re-check, it always gives me the same reading. Its fast, tiny, easy to use, and extremely helpful in analyzing my food and how it effects my ketone level. The Keto diet is hard and seeing the numbers is an incentive and makes it all a fun science project. ### 4/5 — Sever app issues. *2020-01-31* Occasionally has server app issues without warning. Device still works standalone. They responded and updated. ### 3/5 — What is the “body fat” number? *2022-05-25, version 9.2* It works ok and pairs to the device reliably. It does put up lots of annoying little confirmation dialogs but that’s not a showstopper. My main concern is that you have to enter your body fat percentage. As the developer is Korean, I can’t tell if this is the British body fat measurement, or the US version which is completely different, or something else entirely. The UK contact for the meter does not reply to emails. ### 2/5 — Worked great, now crashes on launch *2023-08-18* 8/18/2023 update shows logo for a couple of seconds then crashes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*