Fridays seem to be all right for acquisition announcements. Acrylic Software, developer of both Pulp and Wallet for iOS and the Mac, has just been acquired by Facebook.

Acrylic Software’s Dustin McDonald announced the news on the company’s blog.

I’m happy to announce today that we’ve packed up our small Vancouver studio and will be making the move to San Francisco in the coming weeks to join the design team at Facebook.

For the past four years, we’ve worked tirelessly on creating truly awesome products with a focus on innovation and great design, and I’m incredibly proud of the work we’ve been able to accomplish during that time. Our flagship apps, Wallet and Pulp, have been used and loved by hundreds of thousands of people around the world. Building these products has been a fun and exciting ride, but the time has come to move on to newer and bigger challenges.

Facebook is an invaluable service that we all use daily, and a company I believe is one of the most innovative and important around today. After visiting late last year, I discovered that we shared many of the same core product design goals and principles, and it soon became obvious that it was a natural fit. Simply put, there’s an opportunity at Facebook to have a big impact in many people’s lives. More importantly, Facebook is full of extremely talented people who will be able to help realize its full potential in the years to come.

Our products and services have not been acquired by Facebook, and while there are no plans for further development on them, Wallet and Pulp will continue to remain available for download and purchase in their current form. We’ll certainly be the first to let you know of any updates or changes here in the future.

A special thanks to all of our customers and supporters who have helped us grow and build the best products possible throughout the last four years. We wouldn’t have been able to do it without you.

Pulp promised to take favorite news feeds and present the information in a beautiful and friendly format to allow for easy scanning of headlines, previews, and posts.

Much like the popular 1Password, Wallet allowed users to store Web passwords, software license keys, credit card numbers, and more.

While this news isn’t as surprising as Google’s acquisition of email client developer Sparrow, it’s definitely disappointing to see that both apps will no longer receive any development.

Were you a user of either Pulp or Wallet?