Apps like AV Tools

Here are some great alternatives to AV Tools by Dan Sullivan :
Audio Wizard - Calculators
Audio Wizard - Calculators
★4.7
Frequency Sound Generator
Frequency Sound Generator
★4.7
Electronic toolbox
Electronic toolbox
★4.2
Electronics Toolbox
Electronics Toolbox
★5.0
SPKRS - Speaker Calculator
SPKRS - Speaker Calculator
★3.6
PAcalculate
PAcalculate
★4.3
Tone Generator
Tone Generator
★4.2
DD Toolbox
DD Toolbox
★3.8
Hz Frequency Sound Generator
Hz Frequency Sound Generator
★4.3
AudioTool
AudioTool
★4.6
Sound Frequency Creator
Sound Frequency Creator
★4.0
Woofer Box Calculator PRO
Woofer Box Calculator PRO
★3.9
Function Generator
Function Generator
★4.5
Frequency Sound Generator
Frequency Sound Generator
★4.7
Speaker Box Lite
Speaker Box Lite
★3.8
Multi-Frequency Tone Generator
Multi-Frequency Tone Generator
★4.3