Apps like E-Tuner 4

Here are some great alternatives to E-Tuner 4 by Edelbrock Group :
Instrument Tuner Pro
Instrument Tuner Pro
★4.6
ECU Connect
ECU Connect
★4.1
Tor OBD2 Diagnostics
Tor OBD2 Diagnostics
★4.4
Perfect Bass Guitar Tuner
Perfect Bass Guitar Tuner
★4.8
Pro Guitar Tuner
Pro Guitar Tuner
★4.2
Droid Personal Flasher
Droid Personal Flasher
★3.2
Guitar Tuner: Pro Tuning App
Guitar Tuner: Pro Tuning App
★4.6
Guitar Tuner Guru - Guitar&Uke
Guitar Tuner Guru - Guitar&Uke
★4.5
Tuner Wear
Tuner Wear
★3.4
Pano Tuner - Chromatic Tuner
Pano Tuner - Chromatic Tuner
★4.5
Harmonic Tuner Intonation Expe
Harmonic Tuner Intonation Expe
★4.5
TuneIt: Guitar Tuner & Tempo
TuneIt: Guitar Tuner & Tempo
★4.9
Guitar Tuner, GuitarTunio
Guitar Tuner, GuitarTunio
★4.2
Guitar Tuner | Standard
Guitar Tuner | Standard
★4.6
Guitar Tuner: Easy Tune
Guitar Tuner: Easy Tune
★4.6
Ultimate Bass Tuner
Ultimate Bass Tuner
★4.2