This week’s must-have apps roundup kicks off with Mailbox, the best third-party mail client that’s available on iOS. If you haven’t already downloaded your copy and joined the queue, do it as soon as you can. Mailbox is accompanied by AudioBox, a new player for all of your cloud-based music; the latest game from Kairosoft, and more.

If you’ve got your music stored in the cloud, then streaming it to your iPhone might be difficult. Depending on which service you use, you may need to find a third-party app — one that actually works well, and is designed specifically for music playback. AudioBox is exactly that.

Compatible with a whole host of cloud-based storage services — including Google Drive, SkyDrive, Box, and Dropbox — AudioBox ensures that you can take your entire music library with you on your iPhone.