FizziQ for Phyphox users: experiment correspondence

Phyphox, developed at RWTH Aachen University, and FizziQ read the same sensors of the same phones. Most classic smartphone physics experiments therefore exist in both apps, sometimes under different names. This page is for teachers who already use Phyphox and want to know where to find the equivalent in FizziQ, for instance to use the experiment notebook or the QR-code protocols with a class. It is written by the FizziQ team; Phyphox experiment names are those of the Phyphox catalogue.

Experiment by experiment

Phyphox experiment	FizziQ activities (with protocol, results and PDF handout)
Acoustic stopwatch	Reaction time by stopwatch
Speed of sound	Speed of sound: two stopwatches
Doppler effect	Doppler effect of a vehicle
Tone generator	Acoustic beats at 440/441 Hz
Audio spectrum	Speed of sound: a test tube · Shepard auditory illusion · Chromatic scale and frequencies · Helmholtz resonance: a bottle · Harmonic and inharmonic sounds · Timbre and harmonics · Speed of sound: tube resonance · Tuning forks: pitch of A · Spectrum of sung vowels · White noise: spectral content
Audio amplitude	Destructive sound interference · Adding sound levels in decibels · Coefficient of restitution · Sound level and distance
Acceleration with g	Einstein's equivalence principle · Sensor accuracy: standard deviation · Impact vibrations and seismics · Variation of g with latitude · Pendulum: a = 2gh/r · Variation of g with altitude · Pedometer and step detection · Parabolic flight and microgravity
Acceleration without g	Heart rate by accelerometer · Atwood machine: Newton's 2nd law · Takeoff speed of an airplane · Linear acceleration: principle
Free fall	Free fall: measuring g
Pendulum	Pendulum period: isochronism
Spring	Spring constant: k = 4π²m/T²
Centripetal acceleration	Centripetal acceleration: spinner · Normal acceleration in rotation · Centripetal acceleration: a = ω²R
Roll	Moment of inertia of a cylinder
Inclination	Inclined plane: weight components · Magnetic inclination and latitude · Tree height with a theodolite
Elevator	Elevator speed by barometer
Pressure	Barometric altimetry · Depressurization by barometer
Magnetometer	Biot-Savart law: a coil · Magnetic detection of objects · Magnetic north by magnetometer
Magnetic ruler	Speed by magnetic markers
Gyroscope	Straight-line course, no compass · Measurement uncertainty
Light	Beer-Lambert law with a lux meter · Illuminance: the 1/d² law · Diffusion and retroreflection
Location (GPS)	Rate of climb in flight · Uniform rectilinear motion
Roller coaster	G-forces on a roller coaster

Sensor by sensor, the full lists are on the hubs: accelerometer, microphone, magnetometer, barometer, gyroscope, light sensor, GPS.

Only in FizziQ

Video motion analysis and chronophotography: frame-by-frame tracking of a filmed object: position, velocity, acceleration, energy.
Colorimeter and photoplethysmography: RGB colour measurement with the camera, heart rate with the camera and flash.
Experiment notebook: tables, graphs, formulas, photos and text in one document, exported to PDF or CSV.
Protocols shared by QR code: a teacher writes the protocol once, students scan it and get the right instruments.
FizziQ Web: sound analysis, video analysis and simulations in a browser, for Chromebooks and computers.
FizziQ Connect: ready-made external sensors (CO₂, O₂, temperature, pH, force) over Bluetooth, next to Arduino and micro:bit.

Phyphox keeps two things that FizziQ does not offer: an experiment editor that defines sensors, sampling rates and outputs in an XML file, and remote access to the phone from a browser on the same network. Teachers who rely on those features have a good reason to keep Phyphox alongside FizziQ. A broader comparison, including Physics Toolbox Sensor Suite, is on FizziQ vs Phyphox and in the independent article published in Physics Education (IOP, 2026) summarised on the About page.

Frequently asked questions

Can I do the same experiments in FizziQ as in Phyphox?

For the phone sensors, yes: accelerometer, gyroscope, magnetometer, microphone, light sensor, barometer and GPS are read by both apps, and the classic experiments (speed of sound, Doppler effect, pendulum, spring, free fall, centripetal acceleration, elevator, magnetic ruler) exist in both. The table on this page gives the correspondence.

What does FizziQ have that Phyphox does not?

Video motion analysis, a colorimeter, an experiment notebook with graphs and formulas, protocols shared by QR code, a browser version (FizziQ Web) with simulations, and ready-made external sensors. Phyphox, on the other hand, has an experiment editor and raw data export that some advanced users prefer.

Is FizziQ free, and does it need an account?

FizziQ is free, without advertising, without in-app purchases and without any account. Measurements and notebooks stay on the device.

Can students use both apps in the same class?

Yes. The protocols on this site describe the physics, not the app; a class equipped with both apps can compare the readings, which is itself a good measurement exercise.