MyMP3 converts any video to MP3 audio and saves it on your iPhone so you can listen to it anytime and anywhere!

Key app features are:
• Convert video to MP3 and to many other audio formats (e.g., m4a, wav, aiff, caf, etc..)
• Import audio files from different sources: your gallery, wifi, your laptop, Icould
• Share your MP3 files with any social network, instant messaging app or email
• Edit and customize your audio
• Create and edit playlists
• Integrated powerful music player
• Listen to your tracks in background
• Advanced search to find your favorite audios
• Edit audio metadata, renaming your tracks and artists
• Re-arrange tracks

Subscribe to access to premium app features; subscription details are the following:
• Length: weekly, monthly, yearly
• Your payment will be charged to your iTunes Account as soon as you confirm your purchase
• You can manage your subscriptions and turn off auto-renewal from your Account Settings after the purchase
• Your subscription will renew automatically, unless you turn off auto-renew at least 24 hours before the end of the current period
• The cost of renewal will be charged to your account in the 24 hours prior to the end of the current period
• When canceling a subscription, your subscription will stay active until the end of the period. Auto-renewal will be disabled, but the current subscription will not be refunded
• Any unused portion of a free trial period, if offered, will be forfeited when purchasing a subscription

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/