# Electronics Tools & Calc Pro — Circuits, Filters & Components

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

- Source: https://appshunter.io/ios/app/electronics-tools-and-calc-pro/id1581668963 (this page in markdown: same URL + `.md`)
- Developer: [Anas Abubakar](https://appshunter.io/developer/1581534101)
- Category: Education, Reference
- Price: $4.99
- Rating: 5.00/5 from 5 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 58 MB
- Languages: American English
- Released: 2021-08-18
- Data updated: 2026-09-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/electronics-tools-and-calc-pro/id1581668963/reviews.md

## What is Electronics Tools & Calc Pro?

Calculate, simulate, and understand electronic circuits with more than 60 calculators, interactive tools, and illustrated engineering references.

Electronics Tools & Calculator is an all-in-one toolkit for students, engineers, technicians, makers, and electronics enthusiasts. Use it to study circuit theory, select components, check designs, or troubleshoot projects with practical calculators and clear circuit visuals.

MORE THAN 60 ELECTRONICS CALCULATORS

Solve problems across a wide range of topics:

• Ohm’s law, voltage, current, resistance, and power
• Series and parallel resistors and capacitors
• Four-band, five-band, and SMD resistor codes
• Voltage and current dividers
• DC power and ripple voltage
• RC, RL, LC, and RLC circuits
• LED resistor and parallel LED calculations
• Capacitor and inductor charging
• Star-to-delta and delta-to-star conversions

ACTIVE AND PASSIVE FILTER DESIGN

Design and explore:

• RC, RL, and LC filters
• Butterworth and Chebyshev filters
• Active and passive filters
• Sallen-Key active filters
• Band-pass and band-reject filters
• Twin-T notch filters

Selected advanced calculators include response graphs, helping you visualize how component values affect circuit behavior.

AMPLIFIERS AND SEMICONDUCTORS

Work with practical tools for:

• 555 timer astable and monostable circuits
• BJT analysis, biasing, Q-point, and switching
• MOSFET switching
• Inverting, non-inverting, and difference amplifiers
• Class A, Class B, and Class AB amplifiers
• Differential amplifiers and current mirrors
• LM386 audio amplifier circuits

POWER, RF, AND DESIGN TOOLS

Explore calculations for:

• Linear regulators and heat dissipation
• Buck and boost converters
• Rectifiers and Zener regulators
• Clippers, clampers, and voltage multipliers
• PCB trace width
• Air-core and multilayer inductors
• Transformers
• Coaxial cables and waveguides
• Antenna length and skin depth
• dBm, watts, and decibel conversions
• Servo and stepper motors

DIGITAL ELECTRONICS

Study essential digital circuits with clear diagrams and truth tables:

• Logic gates
• Flip-flops and counters
• Multiplexers and demultiplexers
• Encoders and decoders
• Shift registers
• Common digital integrated circuits

INTERACTIVE CIRCUIT TOOLS

Explore circuit behavior through interactive simulations and strong visual explanations. Adjust values, examine circuit configurations, and connect formulas with practical electronic designs.

ILLUSTRATED ELECTRONICS REFERENCES

Access more than 30 guides covering resistors, capacitors, inductors, transformers, diodes, BJTs, MOSFETs, IGBTs, UJTs, SCRs, DIACs, TRIACs, operational amplifiers, regulators, 555 timers, sensors, digital logic, Arduino boards, and ATmega microcontrollers.

The guides combine explanations, equations, circuit diagrams, pinouts, truth tables, and practical notes to connect theory with real-world applications.

DESIGNED FOR FASTER WORK

• Search calculators by name
• Save frequently used tools to Favorites
• View response graphs in selected calculators
• Export results from selected tools as PDF documents
• Automatically switch between light and dark appearance
• Use an interface designed for phones and larger screens
• Choose from 15 supported languages
• Access additional features through optional Pro tools

Whether you are learning electronics, designing a filter, analyzing an amplifier, or checking values at the workbench, Electronics Tools & Calculator keeps useful tools and references close at hand.

Important: This app is intended for education and design assistance. Always verify calculations, component ratings, circuit requirements, and safety considerations before building or operating electronic equipment.

## 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-tools-and-calc-pro/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 Tools & Calc Pro

### 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)

### 6 — 2026-09-14

few bugs fixed

### 5 — 2026-09-07

本次更新新增了多种电子工具、仿真功能和学习资源：

• Buck 和 Boost 转换器计算器
• 切比雪夫滤波器计算器
• 舵机和步进电机计算器
• LED 并联计算器
• 数字电路仿真
• 锯齿波仿真
• MOSFET 开关仿真
• H 桥仿真器
• 新增 TRIAC、DIAC 和热敏电阻相关内容
• 改进电子元器件文档

探索电路、计算元器件参数，更轻松地学习电子技术——所有功能尽在一个应用中。

### 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

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## More apps by Anas Abubakar

- [Electronics Tools & Calculator](https://appshunter.io/ios/app/electronics-tools-and-calculator/id1581885136)
- [Electronics Circuit Calc Pro](https://appshunter.io/ios/app/electronics-circuit-calc-pro/id1583600520)
- [Electronic Circuit Calculator](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990)
- [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 2026-09-27.*