Android users can draw on photos they tweet while Microsoft works on mood-changing earbuds.

Each week PSFK features many new and innovative apps. To highlight the some of the best, we’ve compiled a roundup of the most interesting and creative apps written about on the site these past seven days:

Twitter Launches Snapchat Competitor With Illustrated Tweets

An app for Android users lets Twitterers draw on their photos before tweeting them, or start drawing on a blank canvas. Twitter specially called out this feature as compatible with Samsung’s Galaxy Note 10.1-2014 Edition.

Microsoft Earbuds Monitor Wearers' Health To Help Pick Next Song

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