Circuit Playground app icon

Apps Like Circuit Playground for iPhone and iPad

Calculate component values and resistor codes

Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.

by Adafruit Industries LLC★ 4.319 ratingsUtilities$2.99Data updated 2026-09-08

Circuit Playground screenshots

Ranked alternatives

Showing 361–380 of 1,000 ranked alternatives.

  1. dB Calculator app icon

    dB Calculator

    Rohde & Schwarz GmbH & Co. KG

    Calculate dBm and voltage levels

    Calculate power levels in dBm and watt with addition and subtraction. Convert between dBm, dBW, mW, W, mV, V, dBV, dBµV, and dBu. Adjust for impedance. Perform voltage calculations for correlated and uncorrelated values.

    ★ 4.33 ratingsProductivityFreeData updated 2026-09-08
  2. Prime Checker app icon

    Prime Checker

    Heart Solutions

    Calculate number properties and values.

    The app calculates integer factorization, Euler's totient function, and primitive roots. It also finds x, y values for various quadratic forms based on the input number's properties.

    ★ 5.03 ratingsEducationFreeData updated 2026-09-16
  3. Units: Fast & Pro Converter app icon

    Units: Fast & Pro Converter

    Rajendran Sajith Sajindran

    Convert with precision and speed

    Convert across 20 categories including length, weight, temperature, and more. Perform real-time conversions with 8-decimal precision. Switch between metric and imperial systems. Use scientific notation and dark mode.

    ★ 4.412 ratingsUtilitiesFreeData updated 2026-09-06
  4. Number Converter app icon

    Number Converter

    Kintarla Pty Ltd

    Convert numbers between different bases.

    The app converts numbers between decimal, binary, octal, and hexadecimal bases. It restricts input to valid digits for the selected base.

    ★ 5.03 ratingsUtilitiesFreeData updated 2026-09-15
  5. Wire Gauge Calculator app icon

    Wire Gauge Calculator

    Paul Pollock

    Calculate wire resistance and gauge.

    The app calculates wire resistance based on gauge and length. It also determines the minimum wire gauge for a given material, length, and maximum voltage drop.

    ★ 1.01 ratingsUtilitiesFreeData updated 2026-10-25
  6. Find Radio Code Instantly app icon

    Find Radio Code Instantly

    Uros Radovanovic

    Check codes by serial number

    Unlock codes by entering the serial number found on the label. Verify availability after payment. Codes are unique to serial numbers, not VINs. Check for battery disconnection or new installation as common causes for lock.

    ★ 4.911 ratingsUtilitiesFreeData updated 2026-09-06
  7. Hantek365 app icon

    Hantek365

    君虎 刘

    Digital multimeter for iPad visualization.

    The app wirelessly transmits voltage, current, resistance, capacitance, and on-off measurements via Bluetooth to an iPad. It records measurements in real time and creates trend curves.

    ★ 4.02 ratingsUtilitiesFreeData updated 2026-11-02
  8. MicroWave Calculator app icon

    MicroWave Calculator

    Keysight Technologies, Inc

    Calculate measurement errors

    Calculate measurement errors using directivity and mismatch error tools. Convert ratios to decibels. Compute noise figures and antenna parameters. Input values and retrieve calculated results.

    ★ 2.45 ratingsBusinessFreeData updated 2026-09-08

How we rank alternatives

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