4+ iOS apps curated and reviewed
If you already know GD&T, this is the deeper bench. 4+ toleranbearingtools apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
Calculates engineering tolerances for various mechanical components based on ISO and ANSI standards. It determines size limits, deviations, and fit types for holes and shafts, offering schematic representations of fits.
This app calculates the fit tolerance for holes and shafts based on ISO standards. Users input a diameter, select tolerance ranges and classes, and the app displays fitting tolerance values, distinguishing between clearance, transition, and interference fits. It also calculates minimum and maximum clearance or interference.