# Resistor ToolKit, Color Codes — Get started with Electronics

> Electronics tool for Ohm's Law, resistor circuits, and color code decoding. (iPhone/iPad app by Thomas Gruber.)

- Source: https://appshunter.io/ios/app/resistor-toolkit-color-codes/id1058581945 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Gruber](https://appshunter.io/developer/342699861)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Rating: 4.30/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 32 MB
- Languages: American English, German (Germany)
- Released: 2015-12-01
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/resistor-toolkit-color-codes/id1058581945/reviews.md

## What is Resistor ToolKit, Color Codes?

This is the brand new Resistor ToolKit!

Try the MOST CONVENIENT Ohm's Law calculator EVER!

Find the EQUIVALENT CIRCUIT (series or parallel) for a specific Resistor value.

Experience the MOST SIMPLE Resistor Color Code Tools for through-hole components and a Code Tool for SMD components.

Get a statistic of the CLOSEST lower and higher Resistor of different E Series.

UNLOCK even more features!
- 5-band resistor tool
- SMD code resistor tool
- Example functionality
- Info screens with more material and explanations
- and of course: all Ads removed!

## Key features

- Ohm's Law calculator
- Equivalent circuit finder (series/parallel)
- Through-hole resistor color code tool
- SMD resistor code tool
- Closest resistor statistics (E Series)
- 5-band resistor tool

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Enable all Features and Remove all Ads | $0.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/resistor-toolkit-color-codes/id1058581945/reviews.md

### 5/5 — Awsome

*2022-08-25*

This is cool I used it for class ong

## Frequently asked questions about Resistor ToolKit, Color Codes

### What is Resistor ToolKit's primary function?

Resistor ToolKit primarily serves as a convenient Ohm's Law calculator and provides tools for decoding resistor color codes for both through-hole and SMD components. It also helps in finding equivalent resistor circuits and statistics for resistors in different E Series.

### Does Resistor ToolKit have ads?

No, Resistor ToolKit is ad-free. The description explicitly states that all ads are removed, and the 'hasAds' flag is false.

### What devices does Resistor ToolKit support?

Resistor ToolKit is available for iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Resistor ToolKit updated?

The latest version, 1.6.0, was released on March 7, 2022. While the last update was in 2022, the app has been stable since its initial release in 2015.

### What is the age rating for Resistor ToolKit?

Resistor ToolKit has an age rating of 4+, making it suitable for a wide range of users, including younger learners interested in electronics.

### Can I find equivalent resistor circuits with Resistor ToolKit?

Yes, Resistor ToolKit allows you to find the equivalent circuit for a specific resistor value, whether it's in series or parallel configuration.

### What extra features can be unlocked in Resistor ToolKit?

Additional features that can be unlocked include a 5-band resistor tool, an SMD code resistor tool, example functionality, and info screens with more material and explanations. These are available through in-app purchases.

### What is the user sentiment for Resistor ToolKit?

Based on the provided data, Resistor ToolKit has a rating of 4.3 stars from 3 ratings, indicating a generally positive user reception.

## Version history (last 5 releases)

### 1.6.0 — 2022-03-07

The R ToolKit now also runs on Mac computers with Apple silicon

### 1.5.1 — 2020-10-22

Ω bugfixes and improvements

### 1.5.0 — 2020-09-19

Ω updates for iOS 14
Ω new Notes popover. Now you can make notes for each tool individually
Ω offset of the resistor color picker fixed on iPads
Ω optimizations and improvements under the hood to make the App more future proof for upcoming iOS versions, screen size changes, etc.

### 1.4.0 — 2020-04-30

- UI optimisations
- smaller fixes and improvements
- from iOS 13 onwards, the background appearance will be auto-detected at the first time start (Light or Dark appearance)

### 1.3.0 — 2019-05-16

- EIA-96 Code to Resistor value converter
- added 4-digit SMD Code to Resistor value and color code converter
- native support for iPhone XS Max, iPhone XR, 11” iPad Pro and 12.9” iPad Pro
- new dark mode

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## More apps by Thomas Gruber

- [EE ToolKit PRO](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426)
- [EE ToolKit](https://appshunter.io/ios/app/ee-toolkit/id391792609)
- [EE ToolKit PRO for iPad](https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367)
- [Audio Function Generator](https://appshunter.io/ios/app/audio-function-generator/id768229610)
- [Audio Funktionsgenerator PRO](https://appshunter.io/ios/app/audio-funktionsgenerator-pro/id895074703)

All apps by Thomas Gruber: https://appshunter.io/developer/342699861

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*