  The sensors in modern smartphones are a promising and cost-effective tool for
experimentation in physics education, but many experiments face practical
problems. Often the phone is inaccessible during the experiment and the data
usually needs to be analyzed subsequently on a computer. We address both
problems by introducing a new app, called "phyphox", which is specifically
designed for utilizing experiments in physics teaching. The app is free and
designed to offer the same set of features on Android and iOS.
