Securely store and access all your essential drone documents offline. Manage drone profiles, track expiration dates, and prepare for flights with pre-flight checklists. Keep your sensitive information private and readily available.




10+ similar apps compared and reviewed
Converter for Water Hardness is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.




Securely store and access all your essential drone documents offline. Manage drone profiles, track expiration dates, and prepare for flights with pre-flight checklists. Keep your sensitive information private and readily available.





Design custom magnets, calculate their properties, and get manufacturing quotes. This app also includes a tool to detect the pole of any magnet.















Easily convert hardness values between 12 different units, including Vickers, Brinell, Rockwell, and Shore. Input your value and select the desired unit for instant conversion, referencing ASTM E 140 standards and polynomial approximations for accuracy.


This app helps firefighters plan long-distance water supply routes. It records the route, calculates distance and elevation, and determines optimal booster pump locations. Results are saved and accessible across devices via a Google account.