Apps like Audio Narrowband Filter

Here are some great alternatives to Audio Narrowband Filter by Real-Time Specialties :
Mandolin Tuner - Mandolin
Mandolin Tuner - Mandolin
★4.0
Semitone
Semitone
★5.0
Shamisen SanShin Tuner
Shamisen SanShin Tuner
★3.4
Tune!It
Tune!It
★4.7
A-Tuner Lite
A-Tuner Lite
★4.3
Smart Audio Effects & Filters
Smart Audio Effects & Filters
★3.4
Advanced Tuner guitar violin
Advanced Tuner guitar violin
★3.6
TunerTime
TunerTime
★4.5
Music Speed Changer: Audipo
Music Speed Changer: Audipo
★4.7
BOSS Tuner
BOSS Tuner
★4.3
Audio Equalizer -standard
Audio Equalizer -standard
★4.6
Audio Jam: AI for musicians
Audio Jam: AI for musicians
★4.1
Tuner
Tuner
★4.7
Pianofy - Create Piano Sound
Pianofy - Create Piano Sound
★3.6
Music Player - Audio Player
Music Player - Audio Player
★4.5
Chromatic Tuner
Chromatic Tuner
★3.7