Hey DN, big news today: you can now use Pixate free of charge for as long as you'd like. We're passionate about prototyping and its role in crafting great experiences, but we also want to make sure it stays accessible to everyone. To that end, we're excited to announce our new free plan: http://blog.pixate.com.
The free plan includes 1 project, unlimited prototypes, 1GB of assets, and community support. If you were on a trial or an existing account you never upgraded, we'll be migrating those accounts throughout the day. Look for an email when yours is complete.
We hope you guys are as excited about this as we are, and stay tuned for great features coming in 2015. Thanks for all the support!