# Calctronics: Circuit Calc Pro — Electronics circuit calculator > Electronic engineering calculator and design tool suite for circuit analysis and component calculations. (iPhone/iPad app by Anas Abubakar.) - Source: https://appshunter.io/ios/app/calctronics-circuit-calc-pro/id1583600520 (this page in markdown: same URL + `.md`) - Developer: [Anas Abubakar](https://appshunter.io/developer/1581534101) - Category: Productivity, Education - Price: $2.99 (on sale, was $4.99) - Rating: 4.30/5 from 3 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 28 MB - Languages: American English - Released: 2021-09-01 - Data updated: 2026-08-14 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calctronics-circuit-calc-pro/id1583600520/reviews.md ## What is Calctronics? Introducing the ultimate electronic engineering app! With its comprehensive collection of calculators and design tools, you'll be able to tackle any electronic project with ease. Our app features a filter design calculator that allows you to plot graphs, making it easier to visualize your calculations. Additionally, we've included resistor, transistor, capacitor, amplifier, and inductor design tools to help you tackle any electronic design problem. Whether you're a professional electronic engineer or just starting out, this app is the perfect tool to have in your arsenal. Download now and experience the power of electronic engineering in the palm of your hand! Here are some stuffs you can do with the app:- Circuit design Electrical calculations Filter design Resistor calculations Transistor design Capacitor design Amplifier design Inductor design Electrical engineering tools Electronic engineering calculator Circuit analysis --- The app contains the following calculators --- • Resistor Colour Code • Resistors in series and parallel • Capacitors in series and parallel • Capacitor charge • Resistor's Y to delta and delta to Y Converter • Resistor's Pi, Tee and bridge Tee attenuator • SMD Resistor Code • Capacitor Code includes polyester and ceramic capacitors • Ohm's Law • Transistor amplifier calculator • Filters Sallen-Key active filter, Butterworth, Chebyshev and Bessel filters • Voltage divider • Resistor Ratio • Skin depth • Decibel to Watt and Watt to decibel converter • Coaxial cable and 2 parallel wires impedance and capacitance calculator • Operational Amplifier eg inverting amplifier, Difference amplifier and Non inverting amplifier • LED series Resistor Calculator • Adjustable voltage regulator • 555 timer Calculator including Astable and monostable timer • Power dissipation • Micro strip trace width and impedance calculator • Inductor Design Tool • Cylinderical wave guide Calculator • Rectangular wave guide Calculator • PCB Trace Width Calculator • Series capacitor, inductor and resistor Resonance • Capacitive Reactance • Inductive Reactance • Power Calculator • Decibel Converter • Crossover calculator • Band pass and Band reject filter design Whether you're a professional engineer or a student learning about electronics, Electronics Calculator Pro is the perfect tool for your circuit design needs. With its comprehensive set of calculator tools and offline functionality, you'll have everything you need to design and analyze your circuits with confidence. Try it out today! ## Key features - Circuit design tools - Filter design with graph plotting - Resistor, capacitor, inductor design - Amplifier calculations - Ohm's Law calculator - 555 timer calculator - PCB trace width calculator ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/calctronics-circuit-calc-pro/id1583600520/reviews.md ### 1/5 — 电子分压 *2026-07-19* 没有以前好用，以前可以填写输入电压，输出电压，再写一个分压电阻就可以得出另外一个电阻，现在输出不能改，非常难用 ### 1/5 — 某些计算缺少单位 *2025-06-05* 某些计算单位不同，且没给出需要的单位，不方便 ### 1/5 — Too simple, no way to evaluate pro without buying *2022-11-23* Like most of these omnibus electronics apps, it covers all the basics and hides all the real calculators behind a paid app. What it doesn’t let you see, however, is that the pro features lack anything but the basic calculations. Bandpass filter calculator? Sure, if one pole and no way to specify the filter type is all you want. Sadly this app is like all the others… don’t waste your money. To the developer: spend the time to document what you are providing, offer a trial version of the pro features so we can tell if paying the full price is worth it. **Developer response:** Hi Akohlsmith thank you for purchasing Electrocalc- RF tools , Please can you send me the calculators you want to be added to the app via this email anas.saulawa@gmail.com ## Frequently asked questions about Calctronics ### What is Electrocalc? Electrocalc is an electronic engineering app offering a wide range of calculators and design tools for circuit analysis and component calculations. It helps users tackle various electronic projects with ease. ### What types of calculators does Electrocalc include? Electrocalc features numerous calculators, including Resistor Colour Code, Ohm's Law, various filter designs (Butterworth, Chebyshev), amplifier calculators, 555 timer calculations, and PCB trace width calculators. ### Is Electrocalc suitable for beginners? Yes, Electrocalc is designed for both professional electronic engineers and those just starting out. Its comprehensive tools make it a perfect resource for learning and executing electronic designs. ### Does Electrocalc work offline? Yes, Electrocalc offers offline functionality, allowing you to design and analyze circuits with confidence without an internet connection. ### What devices is Electrocalc available on? Electrocalc is available for iPhone, iPad, and iPod devices, providing a portable solution for electronic engineering tasks. ### How often is Electrocalc updated? The app was last updated on March 4, 2025, indicating ongoing development and support for the latest features and bug fixes. ### What is the price of Electrocalc? Electrocalc is a paid application, available for a one-time purchase of $2.99. ### What is the user rating for Electrocalc? Electrocalc has a strong user rating of 4.3 stars based on 3 ratings, suggesting positive user experiences with the application. ## Version history (last 5 releases) ### 2 — 2026-08-05 Few bugs fixed ### 1.18 — 2026-07-16 Few bugs fixed ### 1.17 — 2025-03-04 Improved the user interface, added information for the circuits for easy understanding ### 1.16 — 2024-07-12 Ui improvement ### 1.15 — 2024-07-08 improved the UI ## Apps similar to Calctronics | App | Rating | Price | Category | | --- | --- | --- | --- | | [Circuit Planner](https://appshunter.io/ios/app/circuit-planner/id6472896392) | 4.0 (10) | $8.99 | Productivity | | [EE ToolKit PRO for iPad](https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367) | 4.8 (79) | $8.99 | Productivity | | [EE ToolKit PRO](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426) | 4.9 (293) | $12.99 | Productivity | | [CircuitShepherd](https://appshunter.io/ios/app/circuitshepherd/id1598606653) | 1.5 (2) | Free | Productivity | | [matchedRF](https://appshunter.io/ios/app/matchedrf/id1572692410) | — | $4.99 | Productivity | | [Mobile Electrician](https://appshunter.io/ios/app/mobile-electrician/id1210782465) | 2.6 (5) | $4.99 | Productivity | ## More apps by Anas Abubakar - [Electronics docs & calculators](https://appshunter.io/ios/app/electronics-docs-and-calculators/id1581668963) - [Electronics docs & calcs](https://appshunter.io/ios/app/electronics-docs-and-calcs/id1581885136) - [Calctronics: Circuit Calc](https://appshunter.io/ios/app/calctronics-circuit-calc/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 --- *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 2026-08-14.*