This super-deluxe iPhone application, as description says “captures full 4K resolution photos at the rate of 24 photos per second along with synched audio”, what means that you can get really nice clips with your iPhone 5s.
App store approved one of the most expensive app for iPhone. Namely for iPhone 5s with iOS 7 installed, seems that iOS 8 have “broken” the mobile platform’s capability to capture photos in very rapid succession, so named “burst mode”. The iOS 8 does have its own Burst Mode feature, however it’s quite limited, capable of shooting only 10 images per second.
Called Vizzywig 4K, the app doesn’t capture videos, instead it captures full 4K resolution photos (8mp photos) at 24 photos per second with synced audio. After what, it stitches these pictures together and makes a 4K video.
Check out the App Store to buy the app. If you download the app, they promise a VIP email directly from the founder and inventor of the app.