QuantOn Cal Reviews: Is It Legit?

Customer Experience

Positive experience7.1% of reviews
Neutral0.0% of reviews
Negative experience92.9% of reviews

~ Based on 28 written reviews from the US App Store.

Is QuantOn Cal Safe?

Not enough ratings yet to assess QuantOn Cal.

Is QuantOn Cal Legit?

QuantOn Cal appears to be a legitimate app. AppsHunter Legitimacy Score for QuantOn Cal is 90/100.

Based on 90 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Difficult to scan

It’s very difficult to scan the codes. For anyone struggling you need to zoom in (move closer to the code) on the camera test to be able to scan it. Then for the patient code you need to keep scanning until it works. Keep persevering, don’t give up, it’ll eventually work. I scanned for 25mins until it worked. Also some words are cut off in the app, no idea what it was saying
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Response from developer

Dear User, We apologize for any inconvenience caused. To assist further, please describe the issue with the test at info@preventis.com. We're here to help! Warm regards, The Preventis Team

Worst app ever

This is truly the worst app ever it’s old and outdated and won’t scan anything wasted an hour of my life trying. Doctors please stop using this app

Response from developer

Dear User, We regret the issues you've experienced. Please share details at info@preventis.com so we can resolve this promptly. Warm regards, your Preventis Team

Waste of time

App doesn’t scan the device and there is no option for manual scan. What a waste of time.

Response from developer

Dear User, We're truly sorry to hear about your experience with our product. Please reach out to us at info@preventis.com so we can assist you personally with this issue. Thank you for your understanding. Warm regards, The Preventis Team

App won’t take a picture of the results

The app only gives you two minutes to take a picture of your results and then says they are invalid. 2 minutes would be enough time if it didn’t constantly give lighting errors and control line errors. Waste of time, and now I have to request a different kit for testing.

Response from developer

Dear User, We're truly sorry to hear about your experience with our rapid test. Please reach out to us at info@preventis.com so we can assist you personally with this issue. Warm regards, The Preventis Team

Camera does not work

Took forever to get the camera to work, therefore the test result trimmed out giving me an inaccurate result. Also not supported by newer iPhones so I had to borrow someoness phone to do the test

Won’t scan codes

App won’t scan code despite numerous attempts.

Response from developer

Dear User, We apologize for any inconvenience caused. To assist further, please describe the issue with the test at info@preventis.com. We're here to help! Warm regards, the Preventis Team

Doesn’t scan

Doesn’t scan the kit iPhone 13 Pro

Response from developer

Dear User, We're truly sorry to hear about your experience with our app on the phone iPhone 13 Pro. Please reach out to us at info@preventis.com so we can assist you personally with this issue. Thank you for your patience and understanding. Warm regards, The Preventis Team

Not scanning

My iPhone is compatible with the app, no meter what I try the photo scan test impossible to pass.

Response from developer

Dear User, We apologize for any inconvenience caused. To assist further, please describe the issue with the test at info@preventis.com. We're here to help! Warm regards, The Preventis Team

Works fine

There’s a high potential for user error here, but if you carefully follow all the steps, it works.

Response from developer

Dear Customer, Thank you very much for your feedback. We would like to take care of your concern. Please contact info@preventis.com directly so that we can assist you further. Best regards, Your Preventis Team

L’app n’ouvre plus

Depuis que j’ai mon i-phone 16 et que la dernière mise à jour d’Apple a été fait, l’application n’ouvre plus… ça me dit que l’application n’est malheureusement plus supporté par mon appareil ou mon système d’exploitation. J’ai téléphoné chez Dynacare et ils sont incapables de m’aider !!!!

Response from developer

Dear Customer, Thank you very much for your. We would like to take care of your concern. Please contact info@preventis.com directly so that we can assist you further. Best regards, Your Preventis Team

Seriously

The app sets a timer but it’s completely silent when it goes off so of course you miss it unless you are hovering over it for 15 minutes or set a separate timer.

Waste time

This is not related to phone or iOS version, just can't pass the camera test no matter how you scan it. Had to switch to manual test process.

Useless

Won’t work on iOS 18.

Waste of my time

Absolute waste of my time several times now. Does not support iPhone 16.

Absolutely useless. 100% buggy code.

I’ve used this for multiple tests and it never works. There is always an error when I go to scan the final test - the lighting is off, the control line can’t be seen, etc. By the time you get the test scanned, the 2 minutes is up and your results are deemed invalid.
This is especially stupid because you can restart the 15 minute timer in the previous step as many times as you want - so you could hypothetically wait hours to scan your results, rather than the required 15 minutes, but as long as you scan the test within the required 2 minutes on the last step, it will be deemed valid. So incredibly frustrating.
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App won’t scan

App will scan the two camera tests, then it will scan the patient code but then during the test it asks you to scan the patient code again and the app freezes.

App doesn’t work

Can’t even get passed the scan test part of the app, it won’t focus when it is in scan mode. Faulty app. Embarrassing.

Not working on my new iPhone 15 Pro

I changed from iPhone 11 Pro to 15 pro and the app is not working anymore.
I have a message saying the iPhone or IOS version is not supported. I am on IOS 17.2.1

Please update your app to support newest cellphone and IOS.

Crap crap test

Fantastic idea, worst app I have ever use. Repeatedly cant get it to work causes more stress than sickness. Back to the drawing board only gave it one star as I can't submit a review without it..
And yes i have a phone on the list of recommendations.

Wrong results

Keeps showing wrong results and have to repeat this test again and again. It is really annoying that the test kit does not show proper results even if you have done the test correctly. It keeps rejecting the results. Need a better APP for the test.