Volume Booster-Sound Amplifier is a simple and easy way to enhance, intensify your iPhone’s audio!it helps you increase the volume of any audio file or your favorite video up to 1000%,resulting in louder and higher quality sound!Let you have the most comfortable listening experience

Features:
Boost volume up to 1000% with one tap.
Boost your sound volume with one tap.
Boost music bass to the maximum
Can enhance the sound of movies, music, voice memos, audiobooks and any sound file
Audio effects processing with high quality
Can adjust the volume or even mute sound
No time limit
Simple and intuitive interface and customization without unnecessary buttons

Subscription information:
1-month sale Subscription-$6.99
1-month Subscription-$9.99
1-year Subscription-$29.99(3 days free Trail)
- Free trial subscription is automatically renewed unless cancelled 24 hours before the renewal
- Payment will be charged to iTunes Account at confirmation of purchase
- Account will be charged for renewal within 24-hours prior to the end of the current period, at the same price
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase

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