Best Capacitor Apps

138+ iOS apps curated and reviewed

4.3 avg rating
17 free apps
Updated July 2026

Whether you're new to capacitor or looking for an upgrade, our curated collection of 138+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Capacitor Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Capacitor-ConverterCapacitor-ConverterFree4.8★ (10)NoNoJul 2026
2Electronics Toolkit!Electronics Toolkit!Free4.3★ (556)YesYesAug 2026
3Electro PortElectro PortFree5.0★ (1)NoNoMay 2026
4Read A ResRead A ResFree4.4★ (33)YesYesMay 2026
5PerfboardPerfboardFree5.0★ (6)NoYesMay 2026
6Electronics docs & calcsElectronics docs & calcsFree4.0★ (16)YesYesAug 2026
7Electrical Parallel CalculatorElectrical Parallel CalculatorFree4.8★ (24)YesNoJul 2026
8Electronics Reference ToolkitElectronics Reference ToolkitFree4.9★ (7)NoNoJul 2026

Top Picks for Capacitor

Capacitor-Converter#1

Capacitor-Converter by Gerhard Lentschik

Colored and SMD capacitors
Editor's Choice
🔧 Utilities
4.8(10 ratings)
Free
Capacitor-Converter screenshot 1
Capacitor-Converter screenshot 2
Capacitor-Converter screenshot 3
Capacitor-Converter screenshot 4
Capacitor-Converter screenshot 5
Capacitor-Converter screenshot 6

Easily determine capacitor values from color codes or calculate color codes from values. Supports both standard and SMD capacitors, providing quick and accurate conversions for electronics projects.

Electronics Toolkit!#2

Electronics Toolkit! by Electronial

Dozens of tools in one app
Strong Contender
📚 Education
4.3😐(556 ratings)
FreeAdsIn-App Purchases
Electronics Toolkit! screenshot 1
Electronics Toolkit! screenshot 2
Electronics Toolkit! screenshot 3
Electronics Toolkit! screenshot 4
Electronics Toolkit! screenshot 5

This app provides a comprehensive suite of tools and calculators for electronics engineers, students, and hobbyists. It includes numerous calculators for resistors, LEDs, capacitors, Ohm's law, and more, alongside useful tables and unit converters.

What We Love

  • 📚 Comprehensive electronics reference material
  • 👍 Useful for beginners and students
  • 🎯 Good basic calculators for resistance and capacitance
  • 📌 Helpful pinout diagrams for Arduino and Raspberry Pi

Room to Improve

  • 🎨 Poor color scheme with readability issues
  • ⚪ White text on white background
  • 🔒 Excessive paywall blocking most features

More Capacitor apps to explore

4
Read A Res
Read A Res
Read A Res
Resistance Reader
Free

Easily read and convert electronic component resistances. Input color codes or SMD values, and the application handles the rest. Offers a straightforward interface for quick calculations.

Resistance readingResistance conversionColor code input
🔧 Utilities
(33)
free with in-app purchases
5
Perfboard
Perfboard
Perfboard
by Soft Dorothy LLC
Free

This reference app provides essential tools for electronics hobbyists. Calculate resistor and capacitor values, determine LED voltage drops, and access an ASCII table. It features a user-friendly interface and supports various iPhone models.

Resistor color band utilityResistor and capacitor calculatorsVoltage divider calculator
🔍 Reference
(6)
free with in-app purchases
6
Electronics docs & calcs
Electronics docs & calcs
Electronics docs & calcs
Electronics lab in your pocket
Free

This app serves as a pocket-sized electronics lab, offering a comprehensive reference for components and circuits. It simplifies complex calculations for filters, inductors, and various circuit configurations, aiding both engineers and hobbyists in their design processes.

Electronic component referenceElectronic circuit referenceFilter design calculators
📚 Education
(16)
free
7
Electrical Parallel Calculator
Electrical Parallel Calculator
Electrical Parallel Calculator
resistor capacitor inductor
Free

This app provides three specialized calculators for parallel electrical circuits: resistance, inductance, and capacitance. It allows for easy input of values, unit customization, and delivers instant, accurate results for engineers and students.

Parallel resistance calculationParallel inductance calculationParallel capacitance calculation
📚 Education
(24)
ad-supported
8
Electronics Reference Toolkit
Electronics Reference Toolkit
Electronics Reference Toolkit
Resistor, LED & Transistor
Free

This app provides a comprehensive suite of tools for electronics calculations and reference. It includes calculators for resistors, LEDs, capacitors, and voltage dividers, along with a unit converter and transistor database. Designed for speed and offline use, it's ideal for students, hobbyists, and engineers.

Resistor Calculator (4/5 band)Ohm's Law CalculatorLED Resistor Calculator
🔧 Utilities
(7)
free
9
Resistor Code Calculators
Resistor Code Calculators
Resistor Code Calculators
by Kanta Kikubo
Free
🔧 Utilities
(0)
10
DigiKey
DigiKey
DigiKey
Components and parts
Free

Access a vast inventory of electronic components on the go. Find, order, and track parts with features like visual search, barcode scanning, and offline datasheet access. Registered users get enhanced order management and shipping notifications.

Visual Search for parts by photoBrowse and filter product inventoryView detailed product specs, datasheets, photos, and videos
💼 Business
(3.4K)
free with in-app purchases
11
Calctronics: Circuit Calc
Calctronics: Circuit Calc
Calctronics: Circuit Calc
Electronics circuit calculator
Free

This app provides a comprehensive suite of calculators and design tools for electronic engineering. It assists with circuit design, filter analysis, and component calculations for resistors, capacitors, and inductors. Ideal for both professionals and students, it simplifies complex electronic projects.

Comprehensive calculator collectionFilter design with graph plottingResistor, transistor, capacitor design tools
📊 Productivity
(5)
free
12
ICPRICE - Transistor, Diode
ICPRICE - Transistor, Diode
ICPRICE - Transistor, Diode
Capacitor,MOSFET,IGBT,Amplifie
Free
💼 Business
(0)
13
Resistor, Capacitor color code
Resistor, Capacitor color code
Resistor, Capacitor color code
Electro Toolkit
$4.99
$5.99 | 17% OFF
🔧 Utilities
(0)
14
Electrical Calculator lite
Electrical Calculator lite
Electrical Calculator lite
60 Calculators & 16 Converters
Free

This comprehensive tool offers over 60 calculators and 16 converters for electrical engineering, wiring, and circuit analysis. It supports engineers, electricians, students, and hobbyists with calculations ranging from basic Ohm's Law to complex RLC circuits and power conversions.

60+ Electrical Calculators16 Electrical Unit ConvertersOhm's Law Calculations
🔧 Utilities
(570)
free with in-app purchases
15
Power Capacitors
Power Capacitors
Power Capacitors
by Pro Certs Software Ltd
Free
🔧 Utilities
(0)
16
Clucks Capacitor
Clucks Capacitor
Clucks Capacitor
Automate Your Pasture
Free

Manage daily pasture operations for poultry, automating or manually controlling movement, feeding, and predator defense. This tool helps you save time while ensuring your livestock are cared for.

Automate pasture operationsManual control optionsManage feeding
🔧 Utilities
(3)
free
17
Capacitor Calculator
Capacitor Calculator
Capacitor Calculator
Charge and Time Constant
$2.99

This utility app calculates the time constant and energy stored in a capacitor. It helps understand the time-delay characteristics of electrical circuits when a voltage is applied.

Calculate time constant (RC)Calculate energy stored (E)Input voltage, capacitance, and resistance
🔧 Utilities
(4)
paid
18
Resistor Calculator & Ohms Law
Resistor Calculator & Ohms Law
Resistor Calculator & Ohms Law
Resistor Color Band Calculator
Free
🔧 Utilities
(0)
19
Circuit-Design
Circuit-Design
Circuit-Design
Design Simulate Solve Simplify
Free

Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, simplifies complex networks step-by-step, and includes educational resources on electrical laws and formulas. Save and share your designs locally.

Design and analyze electrical circuitsSimplify complex resistor, capacitor, and inductor networksConvert delta to wye and vice versa
📚 Education
(2)
ad-supported
20
CapacitorCalc
CapacitorCalc
CapacitorCalc
by oskari saarinen
$0.99
📊 Productivity
(0)

FAQ about Capacitor

What are the best capacitor apps for iPhone?
Capacitor-Converter tops our capacitor apps ranking as of July 2026, with a 4.8-star average from 10 App Store ratings, and it's free to download.
Yes — 17 of the top capacitor apps we rank are free to download, including Capacitor-Converter and Electronics Toolkit!.
Capacitor-Converter has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 138+ capacitor apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Capacitor-Converter uses the standard color band codes for electrolytic capacitors and EIA codes for SMD capacitors. You select the colors or enter the code, and it displays the corresponding capacitance value.
Yes, Capacitor-Converter supports SMD capacitors. You can enter the capacitor code to find its value or enter the value to determine the correct EIA code.

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