Apple iOS May 09, 2020 15:20 Updated You can download the Sutro Apple App Store right here --> https://apps.apple.com/us/app/sutro/id1439627399 Related articles Google Play System Requirements for Android and iOS Installing Your Sutro Test Cartridge During Set Up Chlorine or alkalinity is marked red and I'm not receiving recommendations! Is Sutro compatible with Frog @Ease SmartChlor?