Apps like Lowtone

Here are some great alternatives to Lowtone by ToneBoosters :
Synth Super JX
Synth Super JX
★4.2
FM Synthesizer [SynprezFM II]
FM Synthesizer [SynprezFM II]
★4.3
Droid Synth
Droid Synth
★4.4
ModSynth Modular Synthesizer
ModSynth Modular Synthesizer
★4.3
Sonic Synthesizer
Sonic Synthesizer
★3.5
Amp Rack Guitar Effects Pedal
Amp Rack Guitar Effects Pedal
★3.2
Bass Loop Maker
Bass Loop Maker
★3.3
Piano Synth. Music Synthesizer
Piano Synth. Music Synthesizer
★4.5
nanoloop
nanoloop
★4.7
My Bass - Bass Guitar
My Bass - Bass Guitar
★3.5
Wiisp Synth
Wiisp Synth
★4.8
Synth
Synth
★4.2
vuKNOB
vuKNOB
★4.6
Voice Changer - Tune my Voice
Voice Changer - Tune my Voice
★4.3
Bass Booster for Tube Pro
Bass Booster for Tube Pro
★4.4
Equalizer FX & Bass Control
Equalizer FX & Bass Control
★4.4