Support
For calculation questions, bug reports, or privacy requests, contact Adam Gray at House of Waffles.
Report an issue
Include the app version, device model, iOS or iPadOS version, calculator name, measurements and units entered, expected result, and actual result. A screenshot is useful. Share only information you are comfortable sending by email.
Check the units
US gallons and UK gallons are different units. An SO₂ addition rate is not a prediction of final free SO₂. Enter liquid SO₂ concentration as % w/v and hydrogen peroxide concentration as % w/w.
MLF and TA
Enter TA in g/L as tartaric acid. Enter starting and target residual malic acid in g/L. A target of 0 models theoretical full conversion; a higher residual models partial conversion. The estimated TA drop is malic acid converted × 0.56. pH is not predicted.
Entries and results
Results clear when inputs or units change. Reset clears the current form. Calculations run locally and do not require an account. Entries are not saved as a calculation history. Share a result if you need to retain or send it.
Availability
Requires iOS or iPadOS 17 or later. The App Store release is pending; the app is configured for free distribution after approval.