Apps Like Resistor color decoder for iPhone and iPad
Ranked alternatives
Showing 501–520 of 1,000 ranked alternatives.

Propeller Calc
Frode Rorvik
Calculate pitch, gear ratio, RPM, and speed
Calculate pitch, gear ratio, RPM, slip, and speed by inputting any four variables. Toggle to select the parameter to compute. Provides precise mechanical and propulsion-related calculations.





CircuitWay
栋侠 郑
Design circuits and simulate electronics
Design and simulate analog and digital circuits with SPICE technology. Analyze circuit behavior and test designs. Explore 97 example circuits including BJT amplifiers, MOS amplifiers, oscillators, filters, and complex projects like UART and RISC CPU.


Fibonacci Calculator Pro
Akyno Apps Negocios Digitais Ltda
Calculate levels from high and low values
Calculate retracements and expansions based on high and low values. Input two numbers to generate retracement levels including 23.6%, 38.2%, 50%, 61.8%, 76.4%, 100%, and 138.2%. Also compute expansion levels such as 261.8%, 200%, 161.8%, and 138.2%.

F Color Picker
德伟 傅
Pick colors, save palettes, share designs
Pick colors from screen pixels. Select hues, brightness, and saturation levels. Save codes in HEX, RGB, or HSL formats. Share colors via copy-paste or export as image files.





OhmCalc Master
Adem ELMACI
Calculate electrical values instantly
Perform electrical calculations using Ohm's Law, voltage, current, resistance, and power. Analyze three-phase systems with balanced and unbalanced load options. Convert units and calculate wire sizes. Save and export calculation results.

Color Board
文睿 李
Big text and pure colors
The app allows users to create pure color boards and display big, customizable text on iPhone and iPad. Users can choose any background or text color, adjust font size, and utilize twinkle mode for flashing effects.


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