# Resistor tools

> Resistor calculators

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

## Overview

- **ID:** `com.peterhohsy.restools`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Peter Ho
- **Category:** EDUCATION
- **Downloads:** 2,481
- **Version:** 2.0.20
- **Last updated:** 2026-07-27
- **First published:** 2022-02-26
- **Publisher country:** HK
- **Size:** 9.33 MB
- **Data as of:** 2026-09-17
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.peterhohsy.restools)
- **Website:** [http://peterho386.weebly.com/](http://peterho386.weebly.com/)
- **Privacy policy:** [https://peterho386.weebly.com/uploads/6/7/6/9/6769822/privacy\_policy.txt](https://peterho386.weebly.com/uploads/6/7/6/9/6769822/privacy_policy.txt)

## Description

This app is a collection of resistor calculators. It is suitable for hobbyist, electronic engineers or professionals.<br><br>This is the free version, which contains ads; you can also buy from the Market the PRO version of the app to support the developer, unlock more features and get rid of the ads.<br><br><br><b>Features</b><br>• Resistor color code<br>• Resistor SMD marking &amp; EIA-96<br>• Temperature coefficient<br>• Resistors in series<br>• Resistors in parallel<br>• Two resistors in ratio<br>• Voltage divider<br>• Ohm&#39;s law<br>• Y-Δ converter<br>• Limit 10 combinations of component values<br> <br><br><b>Features in PRO version only</b><br>• No Ads<br>• No limitation of component values<br>• Selectable 1%,5%,10%,20% of values<br><br><br><b>Note :</b><br>1. For those who need support please email to the designated email.<br>Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.<br><br>All trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.

## Rankings

- #894,962 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.peterhohsy.restools.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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