Amazon is today continuing its Appstore birthday celebrations by making $50 worth of hit Android apps completely free for a limited time. Some of the titles in the bundle include Polaris Office, mSecure Password Manager, Monopoly, and Skethbook Pro.

These four titles alone have a combined value of $32.96 — and there are many more to enjoy.

Here’s the full list of titles that are now free:

• POLARIS Office (was $12.99)
• Runtastic PRO GPS Running, Walking & Fitness Tracker (was $4.99)
• Swype Keyboard (was $3.99)
• mSecure – Password Manager and Secure Digital Wallet (was $9.99)
• PrintHand Mobile Print Premium (was $12.95)
• Worms 2: Armageddon (was $0.99)
• Worms 2: Armageddon (Kindle Tablet Edition) (was $0.99)
• King of Math Junior (was $1.99)
• Fruit Ninja: Puss in Boots (was $0.99)
• Dr. Panda’s Airport (was $1.99)
• MONOPOLY (was $4.99)
• Sketchbook Pro (was $4.99)
• Ski Safari: Adventure Time (was $0.99)
• SpinArt (was $1.99)
• Battle Maiden Yuko Runner (was $10.00)

Remember, there titles are only free temporarily; the sale ends tomorrow, March 22, so you’ll need to act fast if you want to take advantage of the offer.

In addition to the giveaway, Appstore customers will find discounts of up to 60% off on select apps — plus promotions on in-app items for a whole bunch of popular games, including Wheel of Fortune, Terraria, and Batman: Arkham City Lockdown.

• SourceAmazon