Live Spectrogram vs Physics Toolbox Sensor Suite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Live Spectrogram
Visualize sound frequencies in real-time with this tool. It displays audio intensity across time and frequency using color, helping you perfect singing, analyze animal calls, or locate household noises.
- Real-time audio visualization
- Frequency analysis
- Time-based spectrum display
- Intensity shown by color
- Singing voice perfection
- Animal call analysis
- Sound source identification
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Visualize audio with this handy tool. It displays the frequencies of sound around you over time. The horizontal axis is time, the vertical is frequency, and the intensity of frequencies is shown using pretty shades of red. Use it to: Perfect your singing voice Analyze the call of animals Identify and locate annoying sounds around your house Learn about the world of frequency analysis I hope you enjoy this handy little tool!
Physics Toolbox Sensor Suite
This app turns your smartphone into a scientific instrument suite, enabling measurement, recording, analysis, and export of real-time sensor data. It offers tools for kinematics, acoustics, light, magnetism, and more, suitable for students, educators, researchers, and hobbyists.
- Real-time sensor data measurement
- Data recording and analysis
- Data export functionality
- Kinematics tools (accelerometer, gyroscope)
- Acoustics tools (sound meter, oscilloscope)
- Magnetism tools (compass, magnetometer)
- AR visualization for magnetic fields and measurements
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Whether you’re a student, educator, researcher, or hobbyist, Physics Toolbox transforms your smartphone’s built-in sensors into a powerful suite of scientific instruments. Easily measure, record, analyze, and export real-time data for a variety of uses—from classroom experiments to cutting-edge research. KINEMATICS G-Force Meter Linear Accelerometer Gyroscope Inclinometer Motion Visualizer (LiDAR-tracked position and velocity) ACOUSTICS Sound Meter Tone Detector Tone Generator Oscilloscope Spectrum Analyzer Spectrogram LIGHT Light Meter Color Detector Proximeter Stroboscope MAGNETISM Compass Magnetometer Magna-AR (AR visualization of magnetic field vectors) OTHER Barometer GPS - latitude, longitude, altitude, speed, direction, number of satellites Ruler-AR (AR-estimated measurements) COMBINATION Multi Record Roller Coaster GAME Play (data-verified challenges)
Screenshots
Verdict
The clearest difference is price: Physics Toolbox Sensor Suite at Free against Live Spectrogram's $1.99. Physics Toolbox Sensor Suite also leads on update cadence (weekly vs every 31 months) and ratings volume (1.8K vs 6). Live Spectrogram's advantage is in-app purchases (none vs 1) and chart position (#172 vs unranked). On rating, 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
Physics Toolbox Sensor Suite is free to download; Live Spectrogram costs $1.99 up front. Physics Toolbox Sensor Suite sells 1 one-off in-app purchase. Live Spectrogram asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Live Spectrogram against 4.7 for Physics Toolbox Sensor Suite. That said, the two scores are not equally well evidenced: Physics Toolbox Sensor Suite has 1.8K ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 63% of Live Spectrogram's written reviews are positive against 80% of Physics Toolbox Sensor Suite's.
Live Spectrogram ships an update every 31 months, Physics Toolbox Sensor Suite weekly. The most recent releases landed on September 4, 2026 and September 24, 2026 respectively.
| Parameter | Live Spectrogram | Physics Toolbox Sensor Suite |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.8 (6 ratings) — better | 4.7 (1.8K ratings) |
| Positive reviews | 62.5% of reviews | 80.5% of reviews — better |
| Number of ratings | 6 | 1.8K — better |
| Update frequency | Every 31 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #172 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 15 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Krueger Systems, Inc. | Chrystian Vieyra |
Customer experience
Live Spectrogram
Physics Toolbox Sensor Suite
In-app purchases
Live Spectrogram
No in-app purchases
Physics Toolbox Sensor Suite
- Upgrade to Pro$5.99
Questions
Is Live Spectrogram free?
Is Physics Toolbox Sensor Suite free?
Which has better reviews, Live Spectrogram or Physics Toolbox Sensor Suite?
Do Live Spectrogram or Physics Toolbox Sensor Suite have ads?
Which is updated more often, Live Spectrogram or Physics Toolbox Sensor Suite?
Other comparisons
