Your phone is already a physics lab. You just didn't know it.
That accelerometer in your pocket? It's not just for screen rotation. The microphone? It hears more than your music. phyphox, built by RWTH Aachen University, turns the sensors you already carry into a full-blown experiment kit. No extra gear. No expensive probes. Just your phone and a bit of curiosity.
Open the app and you're hit with a clean list of experiments — everything from measuring gravity with the accelerometer to analyzing sound frequency with the microphone. Each one walks you through the setup, the data collection, and the results. You don't need a physics degree. The app does the heavy lifting, showing you real-time graphs and numbers as you move your phone or speak into it. Want to measure the speed of sound? Clap your hands. The app times the echo using your phone's mic and speaker. Want to see how a pendulum swings? Hang your phone from a string and let it go. The gyroscope and accelerometer plot the motion for you.
The real trick is how flexible it is. You can export raw data as CSV or open it directly in other apps. That means you're not locked into phyphox's built-in experiments — you can design your own. The app even lets you create custom experiment configurations on their website and load them onto your phone. For teachers, that's gold. You can build a lab that matches exactly what you're teaching, without buying a single piece of hardware.
It works offline, too. No internet needed once the experiments are loaded. And because it's from a university, there's no ads, no in-app purchases, no data collection nonsense. Just the science.
Who's this for? High school students who want to see physics in action. Teachers tired of broken lab equipment. Or anyone who's ever wondered, "Can my phone measure the acceleration of an elevator?" (Spoiler: yes, and it's oddly satisfying.) Give it a shot next time you're bored in a waiting room. You might learn something.