Max & Louder Volume Booster is a free iPhone app developed by AMO VINA COMPANY LIMITED. This app is designed to enhance the volume of your device beyond the system defaults. Whether you are using low-quality audio or simply want to adjust the bass volume, Max & Louder Volume Booster can help.

With Max & Louder Volume Booster, you can boost the volume of your music and output it to your speakers, headphones, or earphones. This app ensures that all the sounds on your device are much louder, providing an enhanced audio experience.

It is important to note that Max & Louder Volume Booster offers subscription plans for additional features. These include a weekly plan for $2.99 and a yearly plan for $29.99, both of which auto-renew. Payment will be charged to your iTunes account upon confirmation of purchase. The subscription automatically renews unless auto-renew is disabled at least 24 hours before the end of the current period. Users can manage their subscriptions and turn off auto-renewal in their Account Settings.

For more information, you can refer to the Terms of Use and Privacy Policy provided by the developer: