Comparison

iCircuit vs KPR 2

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

Head to head
About

iCircuit

Design and simulate analog and digital electronic circuits in real-time. This app offers a comprehensive component library, built-in test equipment, and the ability to create custom elements. It's ideal for learning, prototyping, and validating designs without physical components.

Highlights
  • Real-time circuit simulation
  • Extensive component library (300+)
  • Built-in test equipment (multimeter, oscilloscope)
  • Programmable Arduino and PIC microcontroller support
  • Custom element creation and sharing
  • Audio simulation
Features
Read full description

iCircuit is the premier iPhone and iPad app for designing, simulating, and learning analog and digital electronics. Its advanced simulation engine provides real-time, always-on analysis so your circuits stay powered and live, just like working with real components. Use it like a CAD tool: add components, wire them up, and set their properties. But iCircuit is unlike typical CAD apps because it is always simulating. You do not stop to take a measurement or spend time configuring reports. Instead, you just play with the circuit as you normally would, with the power on. Build circuits with over 300 components, from simple resistors and LEDs to programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32), Raspberry Pi Pico boards running real MicroPython and CircuitPython, PIC microcontrollers, and 60 4000/7400-series digital ICs (more available with Pro). Connect elements, adjust values, and instantly see the results. BUILT-IN TEST EQUIPMENT • Multimeter: Probe any point to read voltage, current, and power • Oscilloscope: Track multiple signals with touch-controlled time scale, stacked/unstacked views, FFT analysis, and Bode plots • Gauges: Visualize voltages, currents, and frequencies directly in your circuit • Signal generators and configurable sources EXTENSIVE COMPONENT LIBRARY • Raspberry Pi Pico and Pico 2 running genuine MicroPython and CircuitPython firmware • Programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32) • Programmable PIC microcontrollers (assembly and HEX files, more available with Pro) • Power: Voltage regulators (78xx, LM317), sources, dependent sources, power jacks, and simulated antennas • Analog: Resistors, capacitors, inductors, diodes, BJTs, MOSFETs, thermistors, triodes, and tetrodes • Digital: Logic gates (AND, OR, NAND, NOR, XOR), JK and D flip-flops, and 60 4000/7400-series ICs (180+ available with Pro) • ADCs and DACs • Sensors and displays: LEDs, 7-segment, NeoPixels, matrix displays, thermistors • Electromechanical: Motors, servos, SPST/SPDT and DPST/DPDT switches, push buttons, relays, and speakers SPICE, VERILOG, AND VHDL Import vendor SPICE models and subcircuits and use them as components. Write Verilog or VHDL in the HDL element and wire it to the rest of your circuit. CREATE CUSTOM ELEMENTS Build sub-circuits and custom elements to componentize your designs and create reusable modules. Share your custom elements with others via the iCircuit Gallery. AUDIO SIMULATION Hear your circuits. Speakers, buzzers, and microphones produce real audio output. Perfect for students learning electronics, hobbyists prototyping projects, and engineers validating designs, all without burning out a single component. ABOUT ICIRCUIT PRO (OPTIONAL) iCircuit is a complete app with a one-time purchase. iCircuit Pro is optional and adds extra components (including more PICs and a larger 4000/7400 IC library) and helps fund ongoing development. Pro is not required for core simulation or everyday circuit design. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KPR 2

Generate professional property inspection reports directly from your mobile device. This tool helps property managers efficiently manage rental properties, identify issues early, and provide clear, tangible reports to clients. It offers customizable checklists and date-stamped photo integration.

Highlights
  • Create professional property inspection reports
  • Manage rental properties efficiently
  • Spot issues before they become serious
  • Customizable checklist format
  • Date and time stamped photo integration
  • Preview and edit reports on device
Features
Read full description

Easily create a range of professional property inspection reports on the go: Mid term, Safety Checklist, Fire Risk Assessment, Legionella Risk Assessment and Block & Estate Management. Designed by a team of experienced property managers and investment landlords to enable property managers to proficiently and efficiently manage rental properties. Regular inspections allow you to spot any issues before they become serious and help to ward off any potential disputes The clear and professional reports are a tangible way for property managers to show existing and prospective clients the high level of customer service provided. The software is set out in a checklist format and allows the user to choose what they monitor and report. Maintenance issues and general comments are conveniently copied into a summary action sheet for office use. ● Simply log in and get reporting - no online booking required first ● User chooses how much detail to record ● Date and time stamped photos embedded in the PDF report ● Preview and edit reports on device Straightforward monthly plans with unlimited reports and no fixed contract. If you cannot measure the benefits after the first month then we will happily give you your money back If you also do inventory and check out reports then take a look at our Keystone Pro App. DOWNLOAD TODAY AND TRY FOR FREE

Screenshots

iCircuit4 screens

Verdict

The call

The clearest difference is price: KPR 2 at Free against iCircuit's $12.99. KPR 2 also leads on review sentiment (100% vs 61%) and in-app purchases (none vs 2). iCircuit's advantage is update cadence (every 4 weeks vs every 3 months) and device support (3 vs 1). On ads 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

KPR 2 is free to download; iCircuit costs $12.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. KPR 2 asks for nothing beyond the download.

UpkeepUpdate frequency

iCircuit ships an update every 4 weeks, KPR 2 every 3 months. The most recent releases landed on October 15, 2026 and September 14, 2026 respectively.

Scorecard7 real differences · 3 level
iCircuit versus KPR 2: the parameters behind the verdict, then further details
ParameteriCircuitKPR 2
Price$12.99Free — better
Rating3.8 (135 ratings) — better—
Positive reviews61.1% of reviews100.0% of reviews — better
Number of ratings135 — better—
Update frequencyEvery 4 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS13.011.0 — better
Further details — not scored
Size179 MB13 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.Keystone Property Reports Ltd

Customer experience

iCircuit

All ratings135 ratings
Positive68.1%
Neutral4.4%
Negative27.4%
Written reviews682 reviews
Positive61.1%
Neutral12.6%
Negative26.2%

KPR 2

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

iCircuit

Reported bugs

4 issues
  • Oscilloscope and meter functions not working properly
  • Saving and loading circuits can be unreliable
  • Inconsistent behavior when rotating/flipping components
  • Crashes when working with larger or more complex circuits

Requested features

5 requests
  • More components (e.g. transformers, triodes, MOSFETs)
  • Ability to create custom components
  • Frequency domain analysis (Bode plots, FFT)
  • Improved wiring and component placement controls
  • Better support for AC circuits and motors

KPR 2

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

iCircuit

Subscriptions2
  • iCircuit Pro (Monthly)$1.991 Month
  • iCircuit Pro (Yearly)$14.991 Year
None

KPR 2

No in-app purchases

Questions

Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Is KPR 2 free?
KPR 2 is free to download, with no in-app purchases.
Do iCircuit or KPR 2 have ads?
Neither iCircuit nor KPR 2 shows ads.
Which is updated more often, iCircuit or KPR 2?
iCircuit ships an update every 4 weeks, and KPR 2 every 3 months. Most recently, iCircuit was updated on October 15, 2026 and KPR 2 on September 14, 2026.

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