I noticed today that if the PoolMath iOS app loses focus it will close an open log and discard all values. This happens if either the screen is turned off or if you switch to another app/go to the home screen. Seems to happen with all types of logs (notes, expense, test results, etc.) I am on an iPhone 11, iOS version 13.5, app version 333 (3440). Let me know if any other info is needed! Thanks!