: Bass response (20Hz–250Hz), treble evaluation, driver quality, and polarity phase tests. Where to download : Available on the Google Play Store .
: A more modern utility with over 25 professional audio tests. Download Earphone Test apk
: L/R channel identification, frequency sweeps (10Hz to 20kHz), compatibility checks for 4-pin jacks, and "Voice/Music" fidelity tests. : Bass response (20Hz–250Hz)
: Best if you specifically need to troubleshoot your microphone or wiring. Where to download : Available on the Google Play Store . Interesting Review frequency sweeps (10Hz to 20kHz)
: This is a widely recommended choice because it is ad-free and provides professional-grade diagnostics.