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About this app
This is a powerful Volume Booster. It can increase the volume of the low-level audio files to higher quality sound than the default value of the system to obtain additional volume enhancement and sound amplification effects. Extra Volume Booster ensures that there is no distortion when increasing the volume, so that all sounds of low-level audio files or weak microphone speakers can be clearer and stronger. Key Features: Boost Volume up to a maximum of 1000%+. Improve the low quality sound files to louder and higher quality. Subscription: Volume Booster offers $6.99 per month , $26.99 per year subscription and lifetime purchase only $29.99. By tapping 'continue', your payment will be charged to your iTunes Account at confirmation of purchase. Your subscription will automatically renew unless the auto-renew is turned off at least 24-hours before the end of the current period. Su…
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What you can learn from Extra Volume Booster
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 3 screenshots above are Extra Volume Booster's answers to those questions — they're public, they're real, and they made it through Apple's review.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Music apps approach the same problem? Browse more Music apps in the showcase.
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