Apps Like FTC Referee for iPhone and iPad
Ranked alternatives
Showing 841–860 of 1,000 ranked alternatives.





Robben.App
Landesbetrieb fuer Kuestenschutz, Nationalpark und Meeresschutz Schleswig-Holstein





Compressor Capacity
Muralidhar Shenoy
Estimate performance
Calculate performance metrics such as FAD and leakage. Input system data to estimate energy savings. Save results in files for future reference. Support both SI and USCS units for measurements. Run quick tests to assess system efficiency.

Pilot's Tool
Stealth Productions Limited
Common aviation calculations and conversions.
The app offers aviation unit conversions, fuel calculations, and wind analysis tools. It includes calculators for latitude/longitude formats, altitude, turns, and crew rest timing.

PP+ Image Formation – Lenses
Polyhedron Learning Media, Inc.
Determine focal length using optical bench.
The app uses an optical bench to determine focal length and investigate object and image distances. It provides realistic data with errors for analysis and reporting.

PP+ Archimedes Principle
Polyhedron Learning Media, Inc.
Investigate Archimedes Principle with simulation.
The app investigates Archimedes’ Principle using a laboratory balance, metal sample, and graduated cylinders. It determines mass densities of a solid and a liquid with realistic 3D simulation data.

Piper Arrow IV
Gyronimo, LLC
Compute mass, balance, and performance.
The app calculates and interpolates performance data for the Arrow IV using pilot's operating handbook values. It computes mass and balance, takeoff and landing distances, climb data, cruise altitude, and stall speeds.

PP+ Speed of Sound
Polyhedron Learning Media, Inc.
Measure sound wave speed in air.
The app measures the wavelength of a sound wave using a resonance chamber to determine the speed of sound. It provides a 3D simulation with realistic data, including errors, for analysis and reporting.


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Apps are ranked by functional similarity, category fit, rating confidence, and popularity.