PoolMath app broken or incorrect

[Smckiddy]

Hello,

So very recently I have noticed a LARGE discrepancy between PoolMath website and app, even ran this through Orenda and took a look at the math myself. I'm posting some screenshots of side by side by side results for this week. In the first one PoolMath app is showing at .61 CSI while Orenda and PoolMath site are showing -.19 and -.12 respectively, the long math suggests that Orenda and PoolMath site are correct while the app is wildly off. ( pic 1-3 )

I have another comparison as I have pulled an older log from March 22nd ( pic 4 and 5 ) and looking at it it shows and showed at the time it was taken a CSI of -.25, now fast forward to today, I reopen this log and it now shows .43 to the scaling side.

What has changed in the app? Was there an update that broke it? I feel like maybe something is wrong with app now.

Looking at this weeks readings alone, there is no way a Ca of 250 with a TA of 70 and CyA of 50 with a 7.8 pH is leading to a .61!!

 

[mknauss]

Welcome to the forum.
I entered your data from the first picture and get a CSI of -0.13. So there is a data point or units or something off in your settings.

 

[mknauss]

Check your temperature units in Poolmath. If I change it to deg C, the CSI is 0.61

 

[Rocket J Squirrel]

That's weird. I plugged your numbers into my PM app and it calculated CSI at -0.13.

[Edit: I got Marty-ed again. He is right about the degrees Celsius.]