Hi, one of the creators of Siphon here. Happy to answer any questions if you have any.
Curious about how you guy see it moving forward in terms of the pricing plans and whatnot. Building and testing apps will always be free, so what are the plans for the premium offering?
We're still finalising this, but the paid offering will most likely be differentiated on being able to publish apps to the App Store (and eventually Google Play) with everything else remaining free. Alternatively we may choose to allow a very limited version of publishing for free (i.e. limited by number of users or number of push updates).
Feel free to drop us email if you have some more questions: hello@getsiphon.com