# Electronics Kit

> Comprehensive electronics toolkit with calculators, pinouts, and resources for engineers and hobbyists. (iPhone/iPad app by Siu Yuen Ho.)

- Source: https://appshunter.io/ios/app/electronics-kit/id1190014476 (this page in markdown: same URL + `.md`)
- Developer: [Siu Yuen Ho](https://appshunter.io/developer/814088527)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.80/5 from 65 App Store ratings · 35 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 53 MB
- Languages: French (France), German (Germany), American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan), Korean, European Spanish, Hindi, Indonesian, Italian and 6 more
- Released: 2017-01-02
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/electronics-kit/id1190014476/reviews.md

## What is Electronics Kit?

This app is a powerful collection of electronics tools. It is suitable for hobbyist, electronic engineers or professionals 
    
The FREE version may contain ads. You can also buy the PRO version to support the developer, unlock more features and get rid of the ads. 
        
Component value function is a tool for find combination of components to making desired corner frequency, equivalent resistance, equivalent capacitance, equivalent inductance, etc. It is useful for designers have different choices of limited components
        
Features
●  Calculators :  Component value range, SMD resistor code, Resistor in series and parallel, Capacitor in series and parallel, Inductor in series and parallel, Impedance calculator, Ratio calculator,  Voltage divider, Ohm's law,  RC charging / discharging, LED resistor calculator, RC, RL, LC filter, Wheatstone bridge, Operational amplifier, Adjustable voltage regulator, 555 timer calculator, Power dissipation calculator, Coil inductance, Battery life calculator, Trace width calculator, Frequency converter, RMS converter, Decibel converter, Range converter, Temperature calculator, matrix, complex matrix, simultaneous equations, Routh-Hurwitz, link budget, dipole antenna

●  Pinout : audio DIN , DVI, Ethernet, Firewire, Game port, HDMI , Lightning port, Mini-Display port, PS/2 connector, Parallel port, Phone jack connector, RCA connector, Registered jack, S-video, SDCard , Serial port, SIM card, USB, VGA , XLR connector

●  Resource : Circuit symbol, SMD resistor package, SMD capacitor package, TTL 7400 series, CMOS 4000 series, SMD marking, ASCII table, logic gate , Resistivity table, Batteries, Ampacity, AWG wire, SWG wire, World plug

●  Share CSV via AirDrop

●  Share CSV to iCloud Drive

## Key features

- Component value calculators
- Extensive pinout diagrams
- Electronic resource library
- SMD resistor code lookup
- Ohm's law calculator
- RC charging/discharging calculator
- Frequency converter

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Pro feature | $1.99 | one-time |
| 'Show steps' in equivalent cir | $3.99 | one-time |
| Unlock no. of components limit | $0.99 | one-time |
| 'Show steps' in nodal analysis | $2.99 | one-time |
| Unlock controlled sources | $2.99 | one-time |


## Recent user reviews (10 of 35)

All indexed reviews: https://appshunter.io/ios/app/electronics-kit/id1190014476/reviews.md

### 5/5 — Микро

*2025-09-15*

Вполне выручает

### 5/5 — Bis jetzt King

*2025-03-19*

Eine Funktion bei der zweigeteilte Display mit jeweils auswählbarer pinnelegung zur „Gegenüberstellung“ wär genial 1uup

### 5/5 — Aprovei

*2025-02-24*

APP excelente!

### 3/5 — Как узнать сопротивление 3-х и более резисторов?

*2024-02-10*

Как узнать сопротивление 3-х и более резисторов?

### 5/5 — Good

*2024-01-07, version 1.7.75*

Gooodd

### 4/5 — Just found this app

*2023-10-08*

Very good for reference . Finally an app that has value. 
Must have app

### 5/5 — This app is so good

*2023-07-08*

I gave it 5 out of 5 stars. on this review.

### 5/5 — Muito bom!

*2023-03-24*

Parabéns, atualização ficou ótima!

### 5/5 — Ok

*2021-11-17, version 1.7.20*

Hữa ích nhiều lắm ad

### 1/5 — Как просили

*2021-10-19*

Просили отзыв - получайте

## Frequently asked questions about Electronics Kit

### What is Electronics Kit?

Electronics Kit is a powerful collection of electronics tools designed for hobbyists and professionals. It provides a wide range of calculators, pinout diagrams, and essential electronic resources to aid in design and troubleshooting.

### Does Electronics Kit have ads?

The free version of Electronics Kit may contain advertisements. Users can opt for the PRO version to remove ads and unlock additional features.

### What kind of calculators are available in Electronics Kit?

Electronics Kit features a vast array of calculators, including component value range, Ohm's law, voltage divider, LED resistor calculator, RC/RL/LC filters, 555 timer, and many more for various electronic calculations.

### Can I share data from Electronics Kit?

Yes, Electronics Kit allows users to share data via CSV format through AirDrop and iCloud Drive, facilitating collaboration and data management.

### What platforms is Electronics Kit available on?

Electronics Kit is available on iPhone, iPad, and iPod, making it accessible to a wide range of Apple device users.

### How often is Electronics Kit updated?

The latest version of Electronics Kit is 1.8.35, and it was last updated on October 21, 2025, indicating regular maintenance and feature additions.

### What is the user rating for Electronics Kit?

Electronics Kit has a high user rating of 4.7 stars based on 63 ratings, suggesting a positive user experience and satisfaction with its features.

### Is Electronics Kit suitable for beginners?

While suitable for professionals, Electronics Kit's comprehensive tools and resources can also be beneficial for hobbyists and those learning about electronics, offering a practical learning aid.

## Version history (last 5 releases)

### 1.8.35 — 2025-10-21

- Update resources
- Fix minor bugs

### 1.8.30 — 2025-05-21

Fix minor bugs

### 1.8.25 — 2025-05-15

Fix minor bugs

### 1.8.20 — 2025-04-30

Fix layout bug

### 1.8.15 — 2025-04-29

Fix minor bugs

## Apps similar to Electronics Kit

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Operational Amplifiers Guide](https://appshunter.io/ios/app/operational-amplifiers-guide/id6467499897) | — | Free | Utilities |
| [SMD decoder](https://appshunter.io/ios/app/smd-decoder/id6473452077) | 5.0 (1) | Free | Utilities |
| [Circuit Resistance Creator](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949) | 5.0 (3) | Free | Utilities |
| [Ohms Law Calc.](https://appshunter.io/ios/app/ohms-law-calc/id491898006) | 4.7 (1,323) | Free | Utilities |
| [Electronic Component Codes](https://appshunter.io/ios/app/electronic-component-codes/id1670579756) | — | Free | Utilities |
| [Simple Circuit Builder](https://appshunter.io/ios/app/simple-circuit-builder/id1294616098) | 4.0 (28) | Free | Utilities |

## More apps by Siu Yuen Ho

- [Easy Ohm's Law](https://appshunter.io/ios/app/easy-ohms-law/id814088524)
- [RC Circuit Pro](https://appshunter.io/ios/app/rc-circuit-pro/id824145786)
- [RC Circuit](https://appshunter.io/ios/app/rc-circuit/id824460716)
- [Resistor Tools Pro](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)
- [Resistor Tools](https://appshunter.io/ios/app/resistor-tools/id826045228)
- [Timer 555 Calculator Pro](https://appshunter.io/ios/app/timer-555-calculator-pro/id833443125)

All apps by Siu Yuen Ho: https://appshunter.io/developer/814088527

## Related topics

[electronic toolbox pro](https://appshunter.io/ios/topics/electronic-toolbox-pro) · [electronic component pinouts](https://appshunter.io/ios/topics/electronic-component-pinouts) · [siu yuen ho](https://appshunter.io/ios/topics/siu-yuen-ho) · [electronic circuit](https://appshunter.io/ios/topics/electronic-circuit)

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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 2026-08-29.*