Timer 555 Calculator

Name: Timer 555 Calculator
Rating: 3.9 (8 reviews)
Author: Siu Yuen Ho

By: Siu Yuen Ho App

Utilities

Overview

Version:

3.0.20

Last updated: 2025-05-14

Ranking

#463,950 ▲ 402,997

Overall

Features & Capabilities

This app is used to calculate monostable and astable circuit.

Features

Calculate pulse width of monostable circuit
Calculate frequency of astable circuit
Find out combination of components making a desire pulse width in monostable circuit
Find out combination of components making a desire frequency in astable circuit
Saving component values in CSV file
Upload generated CSV files via AirDrop or iCloud Drive
Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Russian

User Growth & Download Statistics

App

By:

Siu Yuen Ho

Rating:

3.90

(8) 1.10

Version:

3.0.20 Last updated: 2025-05-14

Version code:

874760694

Creation date:

2014-03-06

Compatible devices:

Size:

3.08MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-23

Compare stats and ranking:

Ranking

# 463,950 ▲ 402,997

For Developers

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Contact the developer

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Developed by:

Siu Yuen Ho

Apple Apps Store

https://apps.apple.com/us/app/timer-555-calculator/id834044557

User Reviews

It was a very good app and easy to use and I have used it multiple times with no issues whatsoever.

by Ei*****, 2018-07-26

Nice little 555 timer App. Great for most common 555 applications. It would be nice if other circuits found in books like the 555 Timer Cookbook would be included too.