





10+ similar apps compared and reviewed
ADS 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.























Easily add and subtract time in hours and minutes without manual rounding. Copy calculation results and review past formulas with a history feature. Includes navigation and deletion tools for formula input.


Calculate the correct series resistor needed to safely power light-emitting diodes. Input supply voltage, LED voltage drop, current, and the number of LEDs to find the required resistor value and wattage.




This application provides a comprehensive checklist for all procedures on a Boeing 737 aircraft. It supports various flight phases, from pre-start to shutdown, and includes a useful timer to aid in flight operations.

