Questions, bug reports, or feature requests
pKaTool is a titration-curve exploration tool for modeling how titratable groups (acids and bases) behave in coupled systems, such as enzyme active sites.
If you run into a problem, have a question about how to use the app, or want to suggest a feature, email:
When reporting a bug, it helps to include:
Already bought Remove Ads and reinstalled the app, or switched to a new device? Open pKaTool → Settings → Remove Ads → Restore Purchases. This restores the unlock immediately at no extra charge — it doesn't buy it again.
If Restore Purchases says nothing was found, make sure you're signed in to the same Apple Account you used for the original purchase, then try again. If that still doesn't work, email the address above and mention approximately when you purchased Remove Ads.
See also the Privacy Policy, which also covers ads and your privacy choices.