iCircuit vs Meteor Logger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
Meteor Logger
Quickly log meteor sightings with detailed information for astronomical societies. Captures session time, GPS coordinates, and meteor specifics. Export data in CSV format for analysis.
- Log meteor sightings
- Capture session date, time, and GPS
- Record meteor details and comments
- Track number of meteors per session
- Export data in CSV format
- Simple and quick interface
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This app allows you to quickly capture the information needed to accurately log a meteor sighting for reporting to Association of Lunar and Planetary Observers (A.L.P.O.), American Meteor Society, and the Astronomical League's Meteor Observing Program Certificate Award. The program will capture the session date, time, and GPS coordinates from your device and create a log file that includes that information and begin a timer that will capture the length of time your session has been running. When you press the "Log New Meteor" button the file will log the date and time of the button press and change to a screen that will let you select the details about the meteor, plus a small box for comments where you can include information about cloud cover, seeing conditions, and transparency, and any other information you would like to include. If the meteors are coming at a quick pace and conditions have not changed since the last meteor you can either leave it blank, or simply type or say same. When you press the "Save Meteor" button it will append the data file with your captured information and return to the main screen to begin capturing another meteor. The "Meteors" counter will update the number of entered meteors in this session and give a summary of each meteor listed in this session. When the session is complete (this is important!) simply press the "End Session" text at the bottom of the screen. A standard IOS window will pop us asking you how you would like to save or send this new session file. My preference is to "Save to Files" for easy viewing, retrieval, or import into a spread sheet for easy viewing and external saving or sending of the information. You can choose other options as necessary to send to another person if you prefer. The file is a .csv format txt file that can be viewed directly on your device also. Overall it was designed to be a simple, quick, and effective app for being able to log meteor sightings, especially during a meteor shower.
Screenshots
Verdict
The clearest difference is price: Meteor Logger at Free against iCircuit's $12.99. Meteor Logger also leads on rating (5.0 vs 3.8) and review sentiment (100% vs 61%). iCircuit's advantage is ratings volume (135 vs 1) and iOS requirement (13.0 vs 15.1). On ads 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
Meteor Logger is free to download; iCircuit costs $12.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. Meteor Logger asks for nothing beyond the download.
Meteor Logger holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: iCircuit has 135 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 61% of iCircuit's written reviews are positive against 100% of Meteor Logger's.
iCircuit ships an update every 4 weeks, Meteor Logger every 2 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.
| Parameter | iCircuit | Meteor Logger |
|---|---|---|
| Price | $12.99 | Free — better |
| Rating | 3.8 (135 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 61.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 135 — better | 1 |
| Update frequency | Every 4 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 179 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | Krueger Systems, Inc. | JOHNNY SCOTT BRATT |
Customer experience
iCircuit
Meteor Logger
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
Meteor Logger
Not enough reviews yet to summarise bugs or requests.
In-app purchases
iCircuit
- iCircuit Pro (Monthly)$1.991 Month
- iCircuit Pro (Yearly)$14.991 Year
Meteor Logger
No in-app purchases





