Timer IC 555 Calculator

4.0.20

Peter Ho

4.57

2,216 reviews

100,000+
Downloads

Free

Calculation of astable and monostable circuit

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About Timer IC 555 Calculator

Timer IC 555 Calculator is a tools app developed by Peter Ho.

Download Statistics

Timer IC 555 Calculator has been downloaded 270 thousand times. In the last 30 days, the app was downloaded 220 times.

User Ratings

Timer IC 555 Calculator is rated 4.57 out of 5 stars. The rating is based on 2.2 thousand ratings.

App Information

Timer IC 555 Calculator is FREE to download. The APK download size is 8.45 MB. The latest version available is 4.0.20. The last update was on July 27, 2026.

Technical Requirements

Timer IC 555 Calculator requires Android 5.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2013.

Description

IC 555 is a basic timer IC for hobbyist or electronic engineers. This app is used to calculate monostable and astable circuit

Features:
1. Calculate monostable circuit
2. Calculate frequency of astable circuit
3. Calculate component values of monostable and astable circuit. Save component values in CSV file (Excel file)

Features in PRO version only:
1. Selectable preferred value of resistors and capacitors
2. Share CSV file to other apps
3. No limitation
4. No Ad

Note :
For those who need support please email to the designated email.
Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

Recent changes:
4.0.20
- Fix minor bugs

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More data about Timer IC 555 Calculator

Price	Free to download
Total downloads	270 thousand
Recent downloads	220
Rating	4.57 based on 2.2 thousand ratings
Ranking	Not ranked
Version	4.0.20
APK size	8.45 MB
Number of libraries	19
Designed for Android	5.1+
Suitable for	Everyone
Ads	Contains ads

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Alternative downloads for the Timer IC 555 Calculator app

Timer IC 555 Calculator compared with similar apps

Common keywords of similar apps

File Features Csv Email Circuit Astable Monostable Calculate Ic Timer Component Values

Keywords missing from this app

Calculator Electronics Circuits Calculators Design Resistor Voltage Pro Electronic Filter Port Pinouts Series Power Calculations Color Capacitor Connector Parallel Tools Code Components Op Reference Resistors Amp Inverting Amplifier App Frequency Analysis Conversion Calculation Regulator Time Filters Smd Current Guide Divider Law Diode

Google Play Rating history and histogram

Rating history

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1.6K

410

120

Downloads over time

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Timer IC 555 Calculator has been downloaded 270 thousand times. Over the past 30 days, it has been downloaded 220 times.

Changelog of Timer IC 555 Calculator

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Developer information for Peter Ho

Peter Ho

peterhohsy@gmail.com

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Comments on Timer IC 555 Calculator for Android

★★★★★ Roger Hale · Nov 13, 2019

I have not had any problems with this app. I only occasionally use it, but would not be happy about erasing it from my phone. I used the app today to make a turn signal flasher for a scooter. I like the app has circuited applications. If you're bored and just want something to do and have some 555 chips there is weeks and possibly months of fun u can get from this app. Thanks

★★★★★ Stephen Paul · Jun 1, 2022

This is one of those apps that you read on the loo, it's very inspiring.

★★★★★ Raid Hhi · Sep 26, 2019

This is an excellent handy little tool for adjusting 555 timer chips. If u build any circuits using them, you absolutely cannot go wrong by installing this.

★★★★☆ Al Wristen · Jun 27, 2021

Had enough circuitry using 555 to be instructive and useful.

★★☆☆☆ Rudo Strydom · Jan 7, 2021

There are a few mistakes. On astable t high = 0.69 (Ra+Rb) C, not 0.69 (Ra) C. T low is correct. T low = 0.69 (Rb) C Also on frequency f = 1.44 / (Ra+2Rb) C or 1 / 0.69 (Ra+2Rb) C, Not 1.44 / (Ra+Rb) C. In t high Rb is missing in the equation. In frequency, Rb is times 2.

★★☆☆☆ Kassim Abba Dandago · May 30, 2020

No detailed calculation. Constricted functions. Not fully calculable. You could have provided columns in which R1, R2 C, & % could be substituted to find a value or values. You deserve more star for your concern. I will be watching to add more stars, you have tried. Good luck.

Google Play Rankings for Timer IC 555 Calculator

This app is not ranked

Technologies used by Timer IC 555 Calculator

5 permissions · 19 libraries

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