# Electronics Toolkit Pro — Dozens of tools in one app

> Electronics calculators and reference tables for engineers and hobbyists. (iPhone/iPad app by Electronial.)

- Source: https://appshunter.io/ios/app/electronics-toolkit-pro/id1350353308 (this page in markdown: same URL + `.md`)
- Developer: [Electronial](https://appshunter.io/developer/1350247180)
- Category: Education, Productivity
- Price: $1.99
- Rating: 3.80/5 from 4 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.2 · 15 MB
- Languages: American English, Dutch, French (France), German (Germany), Indonesian, European Portuguese, Russian, Chinese (Simplified, China), Latin American Spanish
- Released: 2018-02-23
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/electronics-toolkit-pro/id1350353308/reviews.md

## What is Electronics Toolkit Pro?

Features:

Calculators:
• Resistor color codes -  calculate the resistance of resistors by selecting the colors of the bands

• SMD resistor codes - calculate the resistance of SMD resistors by entering the number

• LED resistor calculator - calculate the needed resistance to connect en LED to a power source

• Parallel resistors - calculate the resistance of resistors in parallel

• Voltage divider - calculate the output voltage of a voltage divider

• Series resistors - calculate the resistance of resistors in series

• Ohm's law - calculate the voltage, current of resistance by entering the other two

• Capacitance calculator - calculate the capacitance, voltage or charge by entering the other two

• Battery discharge - calculate the time it takes to discharge a battery

• Inductor color codes  - calculate the inductance of inductors by selecting the colors of the bands

• Parallel capacitors - calculate the capacitance of capacitors in parallel

• Series capacitors - calculate the capacitance of capacitors in series

• Unit converter - unit converter for length, temperature, area, volume, weight, time, angle, power and base

• Op-amp calculator - calculate the output voltage of non-inverting, inverting, summing and differential opamps

• Wheatstone bridge - calculate the resistance of one resistor in a balanced bridge or calculate the output voltage

• Inductor codes - calculate the inductance of  inductors by entering the number

• Capacitor codes - calculate the capacitance of capacitors by entering the number

• DAC and ADC calculator - calculate the output of digital-analog and analog-digital converters

• Wavelength frequency calculator  - calculate the frequency or wavelength of a wave

• SI prefixes - convert numbers with SI prefixes

• Capacitor energy - calculate the energy in an capacitor

• Slew rate calculator - calculate the slew rate

• Star delta transformation - calculate the resistors in a star delta transformation

• Zener calculator - calculate the resistance of the resistor and voltage of the zener

• Air core inductor calculator - calculate the inductance and wire length of an air core inductor

• 555 timer calculator - calculate the frequency, period, duty cycle, high time and low time of a popular 555 timer circuit

• Plate capacitor calculator - calculate the capacity of a plate capacitor

• Resistance to color code calculator - calculate the colors on the resistor by entering the resistance

• LM317 - calculate the output voltage of an LM317

• Low pass filters

• Wire resistance - calculate the resistance of electrical wire

• RMS voltage

• Decibel calculator

•Reactance

Tables:
• Logic gates - truth table of the 7 logic gates with interactive buttons

• 7-segment display - interactive display that you can change by clicking on one of the segments or by clicking on a button to show a hexadecimal character

• ASCII - decimal, hexadecimal, binary, octal and char ASCII table

• Resistivity - table with the resistivity of common metals at 293K

• Arduino pinout

• Pinout diagrams of 4000 and 7400 series ICs

Other:
• Bluetooth - connect to a bluetooth module like the HC-05 to talk with an arduino or other microcontroller with the terminal, button and slider modes

## Key features

- Resistor color code calculators
- LED resistor calculation
- Ohm's law calculator
- Capacitance and inductance calculators
- Unit converter
- Logic gate truth tables
- ASCII table

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/electronics-toolkit-pro/id1350353308/reviews.md

### 3/5 — 集成电路

*2024-07-09*

之前的可以五位数，现在的只有四位数了，而且评论看不到所写的字，bug了，垃圾

### 1/5 — Всеобщая деградация разработчиков

*2023-05-11*

Клавиатура не сварачивается

### 2/5 — ElectronicsTK

*2022-03-04*

Это отдельное приложение, а не версия обычной версии где затемнены функционал про версии

### 1/5 — 非常差

*2021-03-01*

不如免费的

### 1/5 — 差评

*2020-09-24*

键盘退不下来

### 1/5 — 不要买，上当货，这个软件不是et，功能和et免费版一样，买了就是上当交学费

*2020-03-10*

不要买，上当货，这个软件不是et，功能和et免费版一样，买了就是上当交学费

### 1/5 — Г......но

*2019-08-13*

Было приложение БЕТО функционал лучше , купил PRO на свою голову , Г....но полное

### 5/5 — Electronics Toolkit Pro

*2018-10-22*

Excellent value for a comprehensive suite! Costs less than a cup of coffee.

### 5/5 — 这个和不收费那个版本有何不同？

*2018-09-27*

功能强大

## Frequently asked questions about Electronics Toolkit Pro

### What types of resistor calculations does Electronics Toolkit Pro offer?

Electronics Toolkit Pro offers calculations for standard resistor color codes, SMD resistor codes, and resistors in parallel and series. It also includes a calculator for the resistance of electrical wire.

### Can Electronics Toolkit Pro help with LED circuit design?

Yes, Electronics Toolkit Pro features an LED resistor calculator. This tool helps you determine the necessary resistance to safely connect an LED to a power source, preventing damage to the LED.

### Does Electronics Toolkit Pro include Ohm's Law calculations?

Yes, Electronics Toolkit Pro includes a dedicated Ohm's law calculator. You can easily calculate voltage, current, or resistance by inputting the other two values.

### What reference tables are available in Electronics Toolkit Pro?

The app provides truth tables for seven logic gates, an interactive 7-segment display, an ASCII table with decimal, hexadecimal, binary, and octal values, and a resistivity table.

### What is the price of Electronics Toolkit Pro?

Electronics Toolkit Pro is a paid application, priced at $1.99. This one-time purchase grants access to all its features and tools.

### What devices is Electronics Toolkit Pro compatible with?

Electronics Toolkit Pro is compatible with iPhone, iPad, and iPod devices. It is designed for iOS operating systems.

### How often is Electronics Toolkit Pro updated?

Electronics Toolkit Pro was last updated on February 23, 2018, with version 1.0. There have been no updates since its initial release.

### What is the age rating for Electronics Toolkit Pro?

Electronics Toolkit Pro has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

## Version history (last 1 release)

### 1.0 — 2018-02-23

This app has been updated by Apple to display the Apple Watch app icon.

## More apps by Electronial

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- [Physics Toolkit Pro](https://appshunter.io/ios/app/physics-toolkit-pro/id1353781414)
- [Physics Toolkit](https://appshunter.io/ios/app/physics-toolkit/id1353781994)
- [Amateur Radio Toolkit](https://appshunter.io/ios/app/amateur-radio-toolkit/id1375297506)
- [Math Derivatives](https://appshunter.io/ios/app/math-derivatives/id1435052476)

All apps by Electronial: https://appshunter.io/developer/1350247180

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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 2026-08-25.*