Okay start.
Needs American sizes (UNC, UNF ...). When selecting Inches, the associated drawings should be in inches. A Conversion option would be nice. Further, the interface is a bit quirky.
Not enough ratings yet to assess iGewinde.
iGewinde - Thread Calculator is no longer available in the App Store. AppsHunter Legitimacy Score for iGewinde is 35/100.
Based on 35 of 100 points across 7 verification signals from App Store and developer data.
Score capped because this app is no longer listed.