Comparison

Physics Toolbox Magnetometer vs Circuitry

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

Head to head
About

Physics Toolbox Magnetometer

This app transforms your iPhone into a precise scientific instrument for measuring, visualizing, and recording magnetic fields. Explore magnetic field vectors, magnitudes, and compass headings with real-time charts and digital readouts. Ideal for educational experiments, lab work, or curious exploration.

Highlights
  • Real-time magnetic field vector and magnitude display
  • Chart, digital, and compass viewing modes
  • Data recording and CSV export
  • Adjustable sample rate (1-100 Hz)
  • Signal filters for noise reduction
  • Detection of permanent and electromagnetic fields
Features
Read full description

Measure, visualize, and record magnetic fields with precision — right from your iPhone. Physics Toolbox Magnetometer displays the magnetic field vector in x, y, and z dimensions along with total magnitude in microteslas (µT) or gauss, giving you the data you need for serious lab work or casual exploration. Three ways to view your data: - Chart — real-time graph with toggleable axes, adjustable line width, and fullscreen mode - Digital — large numeric readout for quick at-a-glance measurements - Compass — live heading with True North and Magnetic North display Built for the lab and the field: - Record and export data as CSV for analysis in other software - Adjustable sample rate from 1 to 100 Hz - Signal filters to reduce noise - Detects permanent magnets, electromagnetic fields, and background geomagnetic field Classroom-ready experiments: The magnetometer is well-suited for determining the inverse-square law for a point-source magnet, measuring the magnetic field produced by a solenoid, or capturing the periodic field variations of audio speakers and magnetic plate stirrers. Whether you are a physics student, teacher, engineer, or curious mind, Physics Toolbox Magnetometer turns your device into a capable scientific instrument.

About

Circuitry

Build and simulate electronic circuits in an intuitive 3D environment. This app offers lightning-fast analysis and a user-friendly interface, making complex engineering accessible. Circuits are saved as documents for easy sharing and management across devices.

Highlights
  • 3D circuit building
  • GPU-accelerated analysis
  • Intuitive 3D interface
  • Document-based circuit files
  • Component placement and connection
  • Resistor, voltage source, light bulb components
Features
Read full description

Welcome to Circuitry - the world's first and only 3D circuit builder! INSANELY FAST Circuitry uses an optimized, GPU-accelerated network analysis algorithm that will blow your mind. It can calculate the voltages and currents of even the largest circuits in the blink of an eye - an insanely fast blinking eye! SUPER DUPER EASY TO USE While most circuit simulators are stuck in the stone age when it comes to usability, Circuitry takes you on a time-travel journey to the future. Its' 3D interface and intuitive controls will instantly feel familiar - no lengthy tutorials required. DOCUMENT-BASED Every circuit you build in Circuitry is a file. That way, they integrate perfectly into your existing files and can be used exactly the same way: you can duplicate and modify them, share them, and they are available to you on all your devices. HOW TO USE: 1. Place components by dragging from the toolkit to the canvas. 2. Connect components by tapping the sides of the components in cabling mode. 3. Delete or modify components by long pressing on them. AVAILABLE COMPONENTS: - Resistor - Voltage source - Light bulb

Screenshots

Physics Toolbox Magnetometer4 screens
Circuitry4 screens

Verdict

The call

The clearest difference is rating: Physics Toolbox Magnetometer at 5.0 against Circuitry's 3.8. Physics Toolbox Magnetometer also leads on review sentiment (80% vs 51%). Circuitry's advantage is in-app purchases (none vs 1) and update cadence (every 4 months vs every 13 months). On price, 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

Both are free to download. Physics Toolbox Magnetometer sells 1 one-off in-app purchase. Circuitry asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Physics Toolbox Magnetometer holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Circuitry has 157 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 80% of Physics Toolbox Magnetometer's written reviews are positive against 51% of Circuitry's.

UpkeepUpdate frequency

Physics Toolbox Magnetometer ships an update every 13 months, Circuitry every 4 months. Both last shipped on November 6, 2026.

Scorecard6 real differences · 4 level
Physics Toolbox Magnetometer versus Circuitry: the parameters behind the verdict, then further details
ParameterPhysics Toolbox MagnetometerCircuitry
PriceFreeFree
Rating5.0 (9 ratings) — better3.8 (157 ratings)
Positive reviews80.0% of reviews — better51.4% of reviews
Number of ratings9157 — better
Update frequencyEvery 13 monthsEvery 4 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.112.0 — better
Further details — not scored
Size17 MB35 MB
Age rating4+4+
DeveloperChrystian VieyraRaffael Kaehn

Customer experience

Physics Toolbox Magnetometer

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Circuitry

All ratings155 ratings
Positive68.4%
Neutral12.9%
Negative18.7%
Written reviews37 reviews
Positive51.4%
Neutral13.5%
Negative35.1%

Bugs and requests

Physics Toolbox Magnetometer

Not enough reviews yet to summarise bugs or requests.

Circuitry

Reported bugs

6 issues
  • App crashes on launch
  • App doesn't work after download
  • Blank white screen on opening
  • App won't open, only shows a folder
  • Lights won't turn on
Show 1 more
  • Cannot close circuits properly

Requested features

14 requests
  • Add more components (diodes, transistors, capacitors, inductors, speakers, microphones, resistors, switches, LEDs, displays, transformers)
  • Add labels/names for components
  • Add intensity and voltage for cables
  • Add undo/redo buttons
  • Add tutorials or guidance videos
Show 9 more
  • Allow moving placed components
  • Add polarity for components
  • Add graphical representation of current flow
  • Add export of 2D schematic
  • Support DC and AC circuits
  • Allow use of virtual meters
  • Add oscilloscope function (graph vs time)
  • Improve UI intuitiveness
  • Add sample circuits

In-app purchases

1 purchases

Physics Toolbox Magnetometer

One-time1
  • Pro Upgrade$2.99
None

Circuitry

No in-app purchases

Questions

Is Physics Toolbox Magnetometer free?
Physics Toolbox Magnetometer is free to download, with in-app purchases available.
Is Circuitry free?
Circuitry is free to download, with no in-app purchases.
Which has better reviews, Physics Toolbox Magnetometer or Circuitry?
Physics Toolbox Magnetometer is rated higher. Physics Toolbox Magnetometer averages 5.0 out of 5 from 9 ratings, while Circuitry averages 3.8 from 157 ratings.
Do Physics Toolbox Magnetometer or Circuitry have ads?
Neither Physics Toolbox Magnetometer nor Circuitry shows ads.
Which is updated more often, Physics Toolbox Magnetometer or Circuitry?
Physics Toolbox Magnetometer ships an update every 13 months, and Circuitry every 4 months. Most recently, Physics Toolbox Magnetometer was updated on November 6, 2026 and Circuitry on November 6, 2026.

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