Out of 229+ qui vive co2 sensor apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
This application collects and records data from various sensors on mobile devices, allowing users to log and analyze data from accelerometer, GPS, audio, and more. With one-tap logging and background recording, users can easily collect data and export it in various formats, making it a valuable tool for researchers, educators, and anyone interested in exploring STEM fields.
An all-in-one sensor utility app providing real-time data on GPS, altitude, speed, barometric pressure, accelerometer, magnetometer, sound levels, and light levels, with options to mark values, record data, and share information. Explore various functionalities like detecting hidden objects with the magnetometer, checking weather changes with the barometer, measuring speed with the GPS speedometer, and more. Additionally, features like data recording and speech output are available through in-app purchases.