If you and your team are heavy Pixate users, there's really no way around it: you need to get Pixate Cloud. I highly recommend it. Here's why:
My dev team uses my Pixate prototypes I upload for design and interaction references. We do use design guides, but having an interactive prototypes for each area of the app has been instrumental for my dev team to getting things "just right." Having Pixate Cloud just means they'll have the latest prototypes within reach.
It's a pleasure to review your own prototypes at any moment, anywhere (waiting in line somewhere, out of office, etc).
If anyone in my team needs something I missed, I can quickly prototype and upload.
Pixate Could does come with some nasty frustrations which I hope the Pixate team someday looks into:
1) You can't quickly / easily switch between Pixate Cloud and Pixate Studio. That means you'll have to log out of Pixate Cloud, then connect to Studio. If you then need something in Pixate Cloud, you need to log in...
2) ...and Pixate doesn't remember your credentials. So you need to type your email and password every single time you need to log in—a nuisance on tiny smartphone keyboards.
3) Uploading Pixate prototypes is slow. I'm on fiber optic internet with 30mbps upload speeds and it takes a while to upload prototypes.
4) Downloading is also not very fast. The problem is Pixate app quickly "offloads" the prototype you just downloaded if you app switch into some other app. When you come back into the Pixate app, often times you need to redownload the prototype.
5) Prototypes are by default sorted by name. This isn't ideal. Should be sorted by most recently edited by default.
All in all, I highly recommend for any design heavy teams that iterate quickly and have a lot of animation / interactive elements that are hard to explain via design guides. Despite the frustrations, Pixate Cloud has been a powerful addition to my team's workflow.