Timer IC 555 Calculator

Peter Ho Tools In-app purchases Contains ads

Calculation of astable and monostable circuit

Rating: 4.5; 2.3K ratings
Downloads: 100K+; on Google Play
Price: Free; In-app purchases
Updated: Sep 3; 2026 · v4.0.30

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Screenshots

About Timer IC 555 Calculator

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.

What’s new

Version 4.0.30 · Updated September 3, 2026

4.0.30 - Fix minor bugs

User reviews

Mike Sukphranee

this is more useful solution

Бранислав Таневски

Good, I recommendet!

Limon enigma

Excellent 👍

Walter Vargas

Useful utility

Sunil Panchal

Excellent good

Vincent Millard

Very useful

App details

Timer IC 555 Calculator is a free Tools app for Android with 100,000+ installs on Google Play and a 4.5/5 average rating from 2,389 ratings. It was released on December 26, 2013 and last updated on September 3, 2026. It's developed by Peter Ho. It requires Android 6.0 or later. The app contains ads and offers in-app purchases.

Category: Tools
Rating: 4.5 / 5 (2,389)
Installs: 100,000+
In-app purchases: Yes
Ads: Contains ads
Version: 4.0.30
Requires Android: 6.0
Content rating: Everyone
Released: December 26, 2013
Last updated: September 3, 2026
Developer: Peter Ho

View on Google Play

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Looking for apps like Timer IC 555 Calculator? Here are 6 similar Android apps on Google Play. The highest rated is Ohm's Law Calculator (4.7/5), and all 6 are free to download.

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