# Electronics docs & calculators — Electronics lab in your pocket

> Electronics reference and calculation tool for engineers and hobbyists. (iPhone/iPad app by Anas Abubakar.)

- Source: https://appshunter.io/ios/app/electronics-docs-and-calculators/id1581668963 (this page in markdown: same URL + `.md`)
- Developer: [Anas Abubakar](https://appshunter.io/developer/1581534101)
- Category: Education, Reference
- Price: $3.99 (on sale, was $4.99)
- Rating: 5.00/5 from 5 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 49 MB
- Languages: American English
- Released: 2021-08-18
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/electronics-docs-and-calculators/id1581668963/reviews.md

## What is Electronics docs & calculators?

Electrohelper is carefully designed to address the need for electronic engineers and electronics hobbyists in designing an electronic circuit. 
The app contains the electronic components reference section, electronic circuit reference section, and electronic circuit calculation section. 
Tedious electronic circuit calculation such as Butterworth, Sallen-Key, Chebychev, and Bessel filter is made easier with the app. 

Electronic components section:- 
- Resistor 
- Capacitor 
- Inductor 
- Transient voltage suppressor(TVS) 
- Rectifier diode 
- Signal diode 
- Zener diode 
- Bipolar junction transistor(BJT) 
- Metal oxide field effect transistor(MOSFET) 
- 555 timer 
- Operational amplifier (Op-amp) 
- Arduino boards (arduino uno and arduino nano) 
- Atmega 328 
- Voltage regulator integrated circuit(IC) 
- Multiplexers 
- Demultiplexers 
- Encoders 
-Decoders 
- Flip-flops 
- Counters 
- Shift registers

           Electronics calculator section:-

- NE555 timer Astable multivibrator 
- NE555 timer monostable multivibrator 
- Bipolar junction transistor (BJT) analysos 
- Inductor winding 
- Toroidal inductor winding 
- Transformer winding  
- Butterworth, Bessel, Chebychev passive filter calculator 
- Sallen - Key active filter calculator
- Inverting, noninverting and difference operational amplifier calculator
- Resistor in series calculator 
- Resistor in parallel calculator
- Capacitor in series calculator 
- Capacitor in parallel calculator
- Capacitance of a capacitor calculator 
- Resistance calculator 
- Series LRC circuit impedance and reactance calculator 
- Parallel LRC circuit impedance and reactance 
- Charging and discharging a capacitor  
- Charging and discharging an inductor 
- Polyester film capacitor code 
- Ceramic capacitor code 
- Resistor color code 
- Air core inductor 
- Voltage divider
- Current divider
- Ohms law (current, voltage and resistance relation in a circuit) 
- Delta to star resistor network conversion
- Star to delta resistor network conversion 
- Light emitting diode (LED) resistor calculator  
- Double pole Sallen - Key 
- Butterworth filter components value calculator 
- Surface mounted (SMD) resistor code calculator 
- Pi, Tee and Bridge attenuator
- Radio frequency(RF) calculator 
- Alternating current (AC) power 
- Direct current(DC) power

## Key features

- Electronic component reference
- Electronic circuit reference
- Filter calculation tools
- Inductor winding calculators
- Resistor and capacitor calculations
- Ohm's Law calculator
- AC/DC power calculations

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/electronics-docs-and-calculators/id1581668963/reviews.md

### 5/5 — 少一个经常需要的电阻分压计算

*2024-04-18*

少一个经常需要的电阻分压计算

### 1/5 — 不是用

*2023-12-31*

太简单了还搞个英文

## Frequently asked questions about Electronics docs & calculators

### What is Electronics docs & calculators?

Electronics docs & calculators is a paid application designed to assist electronics engineers and hobbyists. It provides a reference for electronic components and circuits, along with tools for complex circuit calculations.

### What types of electronic components are included in Electronics docs & calculators?

The app includes references for a wide range of components such as resistors, capacitors, inductors, diodes, transistors (BJT and MOSFET), 555 timers, operational amplifiers, and various integrated circuits like Arduino boards and voltage regulators.

### What circuit calculations can Electronics docs & calculators perform?

It can perform calculations for filter designs (Butterworth, Sallen-Key, etc.), inductor winding, transformer winding, resistor and capacitor combinations, Ohm's Law, voltage and current dividers, LRC circuits, and LED resistor calculations.

### Is Electronics docs & calculators available on multiple devices?

Yes, Electronics docs & calculators is supported on iPhones, iPads, and iPods, making it accessible across various Apple devices.

### How often is Electronics docs & calculators updated?

The app was last updated on May 19, 2025, indicating ongoing development and support. The latest version is 3.

### What is the price of Electronics docs & calculators?

Electronics docs & calculators is a paid application priced at $4.99. There are no in-app purchases mentioned.

### What is the age rating for Electronics docs & calculators?

Electronics docs & calculators has an age rating of 4+, making it suitable for a broad audience including younger users interested in electronics.

### Does Electronics docs & calculators have ads?

No, Electronics docs & calculators does not contain advertisements. It is a paid application that offers an ad-free experience.

## Version history (last 5 releases)

### 4 — 2026-07-24

improved the user interface, few bugs fixed

### 3 — 2025-05-19

improved the user interface added more features

### 2 — 2024-08-20

Improved the UI added more tools

### 1.9 — 2023-08-21

Added logic integrated circuit

### 1.8 — 2023-01-15

Added more languages

## Apps similar to Electronics docs & calculators

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Electronic Circuits Calculator](https://appshunter.io/ios/app/electronic-circuits-calculator/id6444422711) | — | Free | Education |
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| [Arduino Programming Pro](https://appshunter.io/ios/app/arduino-programming-pro/id6447102673) | 4.6 (5) | $4.99 | Education |
| [Digital Electronics Pro](https://appshunter.io/ios/app/digital-electronics-pro/id6478407802) | — | $4.99 | Education |

## More apps by Anas Abubakar

- [Electronics docs & calcs](https://appshunter.io/ios/app/electronics-docs-and-calcs/id1581885136)
- [Calctronics: Circuit Calc Pro](https://appshunter.io/ios/app/calctronics-circuit-calc-pro/id1583600520)
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- [Fisika - Physics app](https://appshunter.io/ios/app/fisika-physics-app/id1586848633)
- [PhysicsLab - Calculator lite](https://appshunter.io/ios/app/physicslab-calculator-lite/id1587705682)

All apps by Anas Abubakar: https://appshunter.io/developer/1581534101

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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 2026-08-24.*