HTH™ | Test to Swim™ Apple

Reviews of HTH™ | Test to Swim™

List of user reviews and ratings for HTH™ | Test to Swim™

Total ratings

4.50 (Rating count: 1,542)
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User Reviews

Recent rating average: 1.20
All time rating average: 4.50
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5 star
15% (8)
4 star
2% (1)
3 star
4% (2)
2 star
10% (5)
1 star
69% (36)
DateAuthorRatingComment
2026-06-17 br***** This may be the most unreliable app in the history of the universe. I checked my water and my free chlorine was high and my alkalinity was high. Two minutes later, I checked it again and my free. Was low and my alkalinity was low. I’ve tested the water several times today and every time I get a very, very different reading.
This may be the most unreliable app in the history of the universe. I checked my water and my free chlorine was high and my alkalinity was high. Two minutes later, I checked it again and my free. Was low and my alkalinity was low. I’ve tested the water several times today and every time I get a very, very different reading.
2026-06-14 Th***** Possibly the worst app ever used
Possibly the worst app ever used
2026-05-31 C4***** Last year app was working no issues with testing HTH strips. I recently started using it again for the season and is not testing is working - does not allow to choose the colors to match test strips- I hope they fit it ASAP. And yes I did the update to the app, still not working.
Last year app was working no issues with testing HTH strips. I recently started using it again for the season and is not testing is working - does not allow to choose the colors to match test strips- I hope they fit it ASAP. And yes I did the update to the app, still not working.
2026-05-30 Le***** It’s good to have a more objective reading of the test strip, as well as ability to archive tests as you work to maintain the water balance. However, the recommendations seem to ignore the overall picture. If three readings are off, there’s no comprehensive step-by-step, as in, “first add A, then add B 6 hours later after retesting.” If you add the recommended chemicals all at once, or in the wrong order, you can actually make things worse. So, until HTH fixes this, I recommend plugging the readings into your AI, which WILL give you much better advice.
It’s good to have a more objective reading of the test strip, as well as ability to archive tests as you work to maintain the water balance. However, the recommendations seem to ignore the overall picture. If three readings are off, there’s no comprehensive step-by-step, as in, “first add A, then add B 6 hours later after retesting.” If you add the recommended chemicals all at once, or in the wrong order, you can actually make things worse. So, until HTH fixes this, I recommend plugging the readings into your AI, which WILL give you much better advice.
2026-05-26 sk***** App doesn’t work you try to use the test take a picture and never reads anything keeps saying error
App doesn’t work you try to use the test take a picture and never reads anything keeps saying error
2026-05-25 Mi***** Every time I try taking a picture of the test strip it fails. I’ve done everything it says to do but it still won’t work. It’s useless
Every time I try taking a picture of the test strip it fails. I’ve done everything it says to do but it still won’t work. It’s useless
2026-05-25 Bm***** Won’t do analysis via photo or text. Tried multiple phones. Still not working. Pretty frustrating
Won’t do analysis via photo or text. Tried multiple phones. Still not working. Pretty frustrating
2026-05-25 Nt***** Bought the spa test strips a few weeks ago and have used the app and strips regularly and my spa has never been in better shape. Suddenly I’m now getting an error about enabling notifications when I open the app and every time I try to scan a test strip I get an error and it tells me the test failed and to be sure I’m using the right test strips. I checked that notifications were actually on, I signed out and back in. I even deleted the app and reinstalled it. Same results. It just doesn’t work now. Super frustrating because I bought multiple packs of test strips thinking I’d found a great solution. The good news is the Clorox app and strips work. Just wasted money on HTH products, chemicals, etc.
Bought the spa test strips a few weeks ago and have used the app and strips regularly and my spa has never been in better shape. Suddenly I’m now getting an error about enabling notifications when I open the app and every time I try to scan a test strip I get an error and it tells me the test failed and to be sure I’m using the right test strips. I checked that notifications were actually on, I signed out and back in. I even deleted the app and reinstalled it. Same results. It just doesn’t work now. Super frustrating because I bought multiple packs of test strips thinking I’d found a great solution. The good news is the Clorox app and strips work. Just wasted money on HTH products, chemicals, etc.
2026-05-25 Yo***** I have to take 100 pictures every single time i want to do a test. Extremely bad app
I have to take 100 pictures every single time i want to do a test. Extremely bad app
2026-05-25 Me***** Photo feature never works, doesn’t matter what background or light level used.
Photo feature never works, doesn’t matter what background or light level used.
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