Best 555 Calc Apps

4.0(3 ratings)

FreeAds

This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.

Timer 555 Calculator by Siu Yuen Ho

Strong Contender

3.9(8 ratings)

FreeIn-App Purchases

Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.

CALC Smart Calculator ± by QApps LLC

Basic « Scientific » Advanced

Worth Considering

4.8😞(2.4K ratings)

FreeIn-App Purchases

This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.

What We Love

💻 Excellent calculator functionality
🎨 Beautiful and clean interface
🔢 Displays full calculation history
🔍 Useful conversion tools
🤖 Seamless Apple Watch integration

Room to Improve

💰 Subscription model introduced
🔒 Restricted features behind paywall
📊 Calculation bugs and inaccuracies
🔄 Unnecessary UI changes frustrate users

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History tape for reusing answersSales tax and discount calculationsPrecise rounding settings

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Calculate monostable pulse widthCalculate astable frequencyFind component combinations

Timer 555 Calculator Pro

by Siu Yuen Ho

$0.99

Calculate parameters for monostable and astable circuits. Find component combinations for desired pulse width or frequency. Share circuit files via iCloud Drive or AirDrop.

by Crossroads Software Inc

(3)

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