Test and tune your Auto or Home audio system using BASS frequencies as low as 4Hz. This app generates clean BASS tones using Apple’s Core Audio tools. Stress test your sound system to help you determine the optimum bass frequency for your subwoofers.
LOW FREQUENCY BASS GENERATOR
App Features:
BASS GENERATOR / BASS TEST
Test and tune your Auto or Home audio system using BASS frequencies as low as 4Hz. This app generates clean BASS tones using Apple’s Core Audio tools. Stress test your sound system to help you determine the optimum bass frequency for your subwoofers.
— WARNING —
This app can produce very low bass frequencies that don’t normally exist in music. Start with your volume turned down. Damage can occur to your equipment if not properly monitored.
App Features:
• Generate BASS tones between 4Hz and 100Hz.
• Adjust the BASS in real-time as you hear it.
• Two BASS Tracks included.
• Noise Test audio mode.
• Sweep Test 20-20000Hz audio mode.
• Adjust frequencies in small increments.
Excellent for audio competitions by using only frequencies instead of music.
— WARNING —
BE AWARE OF YOUR VOLUME LEVEL AND CAPABILITIES OF YOUR SYSTEM BEFORE USING THIS APP!
KSelman 
How can I use it with my music on my iphone
On the main screen is a Music icon, in there you can play from your library. When you already have a BASS tone playing on the main screen you will hear the tone played concurrently with the music.
How do
I had the freq of bass I want with my library. I got this app cuz I like sings but not all so GS have a good 50hz bang but they need one. I want the app to replace the weak bass for good 50hz bass or allow me to edit or
Mix it in. I run IOS 7 but couldn’t get the app to do it as advertised.
I bought the Bass Hz app. I am tech savvy & am a pro videographer. I use a non-linear editing system called AVID & thus make pro tools & just audio mixers easy & supplemental of what I do.
How do I mix a certain bass frequency into a song. This is what the app promises but I can’t either get it to do this or figure it out. I bought this app under the premise that songs I really like but have terrible bass hooks could be rectified. That I could take cool songs & mix in a 50hz thump where their 85 one was. I can play my song with the app & when I hit the frequency it makes a thump but nothing mix able. Please explain you app to me? Help. Or did you guys get mislead me. I even typed “iPhone app that allows you to mix hard hitting bass into any song”.
You can select a frequency on main screen and then navigate to the visualizer screen to load and play music over the bass tone.