Comparison

iCircuit vs HP Prime Pro

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
Currently charting
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

HP Prime Pro

This app provides a comprehensive graphing calculator experience on your mobile device, mirroring the functionality of a physical HP Prime calculator. It's designed for students to solve complex problems, explore mathematical concepts, and utilize advanced features for various science and engineering fields.

Highlights
  • Advanced graphing of equations and inequalities
  • 3D function plotting
  • Units and base conversions
  • Full-featured programming language
  • Dynamic Geometry, Statistics, Finance, Spreadsheet apps
  • Context-sensitive help
  • Equation solving (single and systems)
  • Computer Algebra System (CAS)
Features
Read full description

HP Prime Pro is an extensive and integrated graphing calculator app that enables students to solve problems, learn, and explore on their mobile device. Designed with the same layout and features as the College Board approved HP Prime Graphing Calculator, the app answers the demands of the digital classroom and delivers flexible functionality anywhere you work. FEATURES: • Advanced graphing capabilities to graph implicit and explicit equations and inequalities, with the capability to trace or build tables of points of interest. • Use the Graph 3D feature to plot functions that define Z in terms of X and Y • Units & base conversions to handle the most complex problems in chemistry, physics, quantum mechanics and other engineering fields • Pinch-to-zoom and multi-touch capabilities for a hands-on, intuitive experience. • Full featured programming language including user defined functions and re-assignable keys • Perfect companion for secondary and collegiate mathematics courses with dynamic Geometry, Statistics, Finance, and Spreadsheet applications. • Just-in-time context-sensitive help available through the app. • Easily toggle decimals to special values of (a/b)*π, (a/b)*√(c/d), ln(a/b), and e^(a/b) • Solve single equations and systems of equations (linear and nonlinear).. • HP Prime Explorer allows the user discover several function families • Calculate bonds, cash flows, dates and more with the Finance feature. • Reduce keystrokes with optional RPN. • Delivers a multidimensional Computer Algebra System (CAS). • Authentic app, developed and supported by HP.

Screenshots

iCircuit4 screens
HP Prime Pro4 screens

Verdict

The call

The clearest difference is price: iCircuit at $12.99 against HP Prime Pro's $24.99. iCircuit also leads on rating (3.8 vs 3.2) and review sentiment (61% vs 30%). HP Prime Pro's advantage is in-app purchases (none vs 2). On ratings volume, ads, 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

iCircuit costs $12.99 and HP Prime Pro $24.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. HP Prime Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iCircuit holds the better App Store score, 3.8 against 3.2. Both are backed by a comparable volume of ratings — 140 and 81 respectively. Written reviews point the same way: 61% of iCircuit's written reviews are positive against 30% of HP Prime Pro's.

UpkeepUpdate frequency

iCircuit ships an update every 4 weeks, HP Prime Pro every 6 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 5 level
iCircuit versus HP Prime Pro: the parameters behind the verdict, then further details
ParameteriCircuitHP Prime Pro
Price$12.99 — better$24.99
Rating3.8 (140 ratings) — better3.2 (81 ratings)
Positive reviews61.1% of reviews — better30.3% of reviews
Number of ratings140 — better81
Update frequencyEvery 4 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
Best chart rank#196 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size179 MB55 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.MORAVIA Consulting, spol. s r.o.

Customer experience

iCircuit

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

HP Prime Pro

All ratings81 ratings
Positive43.2%
Neutral27.2%
Negative29.6%
Written reviews211 reviews
Positive30.3%
Neutral19.0%
Negative50.7%

User reviews

iCircuit

From 140 App Store ratings

What we love

  • 🚀 Great for learning and testing
  • 👍 Intuitive and easy to use
  • 💡 Programmable Arduino integration
  • 👍 Useful for hobbyists and students

Room to improve

  • 🐛 Buggy and crashes frequently
  • 🔧 Difficult to edit and delete components
  • 🔧 Limited component library
  • 🔧 Inaccurate simulation results in some cases

HP Prime Pro

From 81 App Store ratings

What we love

  • ✅ Accurate replication of HP Prime calculator functionality
  • 📱 Convenient portable calculator without carrying physical device
  • 🎨 High-resolution display better than physical calculator
  • 🔄 Connectivity with HP Connectivity Kit for file transfer
  • 📊 Powerful CAS and graphing capabilities

Room to improve

  • 🐛 Outdated firmware (2021 vs 2025 on real device)
  • 📏 Poor screen scaling and UI sizing issues
  • 🖥️ Does not fill modern iPhone/iPad screens properly
  • ⏱️ No updates in 4+ years despite hardware updates
  • 🔌 No multitasking/split-screen support

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

HP Prime Pro

Reported bugs

14 issues
  • CAS mode crashes (especially with solve, integrals, summation functions)
  • App crashes on startup intermittently
  • Settings revert after app restart (RPN mode, number format, font size)
  • Keyboard not visible on some devices (black area instead)
  • Touch input issues and delayed key responses
Show 9 more
  • ATAN function returns incorrect values in degree mode
  • arg() function inconsistent with angle settings
  • Matrix determinant calculation crashes
  • Cursor positioning issues in programming mode
  • Network errors during setup
  • Severe battery drain even when running in background
  • Device overheating during use
  • Graphing issues with certain functions (Y=X^(1/3))
  • Incompatibility with iOS 11 and iOS 12

Requested features

10 requests
  • Update firmware to match latest HP Prime G2 (2025)
  • Implement full-screen UI optimization for modern devices
  • Add multitasking/split-view support for iPad
  • Support native iOS keyboard for programming
  • Enable system keyboard support (26 keys)
Show 5 more
  • Optimize UI scaling for iPhone 11+ and modern iPad sizes
  • Add key click volume control independent of ringer
  • Improve text paste functionality from iOS
  • Better integration with HP Connectivity Kit
  • Responsive design for all screen orientations

In-app purchases

2 purchases

iCircuit

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

HP Prime Pro

No in-app purchases

Questions

Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Is HP Prime Pro free?
HP Prime Pro costs $24.99, with no in-app purchases.
Which has better reviews, iCircuit or HP Prime Pro?
iCircuit is rated higher. iCircuit averages 3.8 out of 5 from 140 ratings, while HP Prime Pro averages 3.2 from 81 ratings.
Do iCircuit or HP Prime Pro have ads?
Neither iCircuit nor HP Prime Pro shows ads.
Which is updated more often, iCircuit or HP Prime Pro?
iCircuit ships an update every 4 weeks, and HP Prime Pro every 6 months. Most recently, iCircuit was updated on October 23, 2026 and HP Prime Pro on October 24, 2026.

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