MathLib is an offline iPhone calculator for quick calculations and reusable formulas. Requires iOS 17 or later.
Email support@typetab.dev for MathLib support, feedback, feature requests, or privacy questions. Please include “MathLib” in the subject.
Include your iPhone model, iOS version, MathLib version, what you expected, and what happened. If relevant, include a non-sensitive example expression and the exact error message. Do not include private formulas, payment details, or other sensitive information.
The full calculator and catalog are free. Free includes two personal formula saves. MathLib Pro is a one-time purchase for unlimited personal formula saves, not a subscription.
To restore Pro, use Restore Purchase on the purchase screen while signed into the same Apple Account used to purchase it. Purchasing and restoration require App Store access; calculations work offline.
Scratch calculations are temporary. Use Save as Formula to keep a calculation. Saved formulas remain on your device; MathLib does not provide accounts or cloud sync.