Comparison

Calctronics vs Circuit Planner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calctronics

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

Highlights
  • 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
Features
Read full description

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!

About

Circuit Planner

Design professional IEC circuit diagrams with a user-friendly interface. Access a vast library of symbols, utilize automatic connection features, and export your plans in PDF format. Ideal for electrical engineering projects.

Highlights
  • User-friendly interface for circuit diagram creation
  • 1056 integrated IEC circuit diagram symbols
  • Automatic connection system for precise wiring
  • Export diagrams in PDF format
  • Supports A4, A3, A2 formats with up to 20 drawing sheets
  • Automatic backup of project data
Features
Read full description

Circuit Planner is the intuitive and creative App to design IEC circuit diagrams for electrical engineering: • Uncomplicated handling and fast results close the gap between conventional drawing programs and complex CAD applications. • Numerous circuit diagram symbols, divided into categories, cover a wide range of applications in absolutely high-quality visualization. • All planning results can be exported in pdf format and printed out if required. The features in detail: • User-friendly, uncomplicated application for creating circuit diagrams for electrical engineering • 1070 integrated objects such as IEC circuit diagram symbols, text fields and geometries • Detailed IEC circuit diagram symbols, stored in categories, such as batteries, brakes, capacitors, conductors/cables, connections/terminals, control technology, converters, cross-references, devices, digital technology, fuses, generators, inductors, installation plans, integrated circuits / ICs, light sources, measuring instruments, motors, optical fibre cables, overvoltage protection, photovoltaic, plugs/sockets, protective devices, relays/contactors, reporting/signal devices, resistors, semiconductors, starters, switches/contacts, terminal strips, transformers and voltage sources • Reliable snap function for precise arrangement of objects on the drawing sheet • The automatic connection system ensures the correct electrical connection to immediately adjacent circuit diagram symbols at the starting point and end point of conductors • Automatically updated cross-references • Circuit diagrams in A4, A3 and A2 formats, each in landscape or portrait format with up to 20 drawing sheets • Drawing sheets with title block in two sizes for project details, date and name • Drawing sheets with column and row labelling and optional drawing grid • Print and export function for the circuit diagram in pdf format • Export and import options for scpData - project files • Clear and understandable explanations on how to use • Demo projects from the fields of energy technology, control technology and electronics • Save, load and sort function for project files • Automatic backup of project data when closing the application • App language: English and German Circuit Planner - A professional tool without annoying adverts, requires no internet connection and no in-app purchases.

Screenshots

Calctronics4 screens
Circuit Planner4 screens

Verdict

The call

The clearest difference is review sentiment: Circuit Planner at 60% against Calctronics's 0%. Circuit Planner also leads on update cadence (every 2 weeks vs every 2 months) and price ($2.99 vs $4.99). Calctronics's advantage is iOS requirement (13.0 vs 15). On ads, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Calctronics costs $4.99 and Circuit Planner $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calctronics ships an update every 2 months, Circuit Planner every 2 weeks. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
Calctronics versus Circuit Planner: the parameters behind the verdict, then further details
ParameterCalctronicsCircuit Planner
Price$4.99$2.99 — better
Rating4.3 (3 ratings) — better—
Positive reviews0.0% of reviews60.0% of reviews — better
Number of ratings3 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15
Further details — not scored
Size28 MB7 MB
Age rating4+4+
DeveloperAnas AbubakarAxel Hauschild

Customer experience

Calctronics

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

Circuit Planner

Written reviews10 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

In-app purchases

None

Calctronics

No in-app purchases

None

Circuit Planner

No in-app purchases

Questions

Is Calctronics free?
Calctronics costs $4.99, with no in-app purchases.
Is Circuit Planner free?
Circuit Planner costs $2.99, with no in-app purchases.
Do Calctronics or Circuit Planner have ads?
Neither Calctronics nor Circuit Planner shows ads.
Which is updated more often, Calctronics or Circuit Planner?
Calctronics ships an update every 2 months, and Circuit Planner every 2 weeks. Most recently, Calctronics was updated on September 9, 2026 and Circuit Planner on September 22, 2026.

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