# Timer 555 Calculator

> Utilities

Canonical page: [https://chrome-stats.com/d/id834044557](https://chrome-stats.com/d/id834044557)

## Overview

- **ID:** `id834044557`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Siu Yuen Ho
- **Category:** Utilities
- **Rating:** 3.90 / 5 (8 ratings)
- **Version:** 3.0.20
- **Last updated:** 2025-05-14
- **First published:** 2014-03-06
- **Size:** 3.08 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/timer-555-calculator/id834044557)
- **Privacy policy:** [http://peterho386.weebly.com/uploads/6/7/6/9/6769822/private\_policy\_general.htm](http://peterho386.weebly.com/uploads/6/7/6/9/6769822/private_policy_general.htm)

## Description

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

## Rankings

- #390,429 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id834044557)