Apps like AV Tools Pro

Here are some great alternatives to AV Tools Pro by Dan Sullivan :
Audio Wizard - Calculators
Audio Wizard - Calculators
★4.7
Frequency Sound Generator
Frequency Sound Generator
★4.9
Tone Generator
Tone Generator
★4.2
PAcalculate
PAcalculate
★4.3
DD Toolbox
DD Toolbox
★3.8
SPKRS - Speaker Calculator
SPKRS - Speaker Calculator
★3.6
Frequency Sound Generator
Frequency Sound Generator
★4.7
Hz Frequency Sound Generator
Hz Frequency Sound Generator
★4.3
Multi-Frequency Tone Generator
Multi-Frequency Tone Generator
★4.2
Frequency Sound Generator
Frequency Sound Generator
★3.9
Frequency Sound Generator
Frequency Sound Generator
★4.1
Frequency Sound Generator
Frequency Sound Generator
★3.9
Speaker Box Lite
Speaker Box Lite
★3.8
Function Generator
Function Generator
★4.4
Sound Frequency Creator
Sound Frequency Creator
★4.0
Woofer Box Calculator PRO
Woofer Box Calculator PRO
★3.9