Contact and support
Questions about a calculation, a correction, or help with the iPhone app. We read every message.
- Phone
- 253-338-5428
App support
For a problem with the app, include your iPhone model, iOS version and the app version shown in Settings.
Restoring Lifetime Pro
Lifetime Pro is a one-time purchase tied to your Apple Account. On a new or reset iPhone, open Settings → Restore Purchases in the app while signed in with the same Apple Account. Refunds are handled by Apple.
Corrections
If you think a number or source on this site is wrong, tell us which page and what you expected. The methodology page lists every formula and default.
We can’t size a specific installation for you or recommend a contractor. For code or installation questions, contact a licensed plumber or your local building department.