Avo for Ruby on Rails Review

Avo definitely seems promising and polished. What is more, it's based on all the modern tech that's included within the latest (v7 as of now) version of Rails.

Unfortunately, its licence is bit less permissive than one would expect. I.e. you can't use it in a commercial product without buying a license. Yes, there are both FREE and Pro version; however, if you are using it on a non-personal project you need to pay for it. That's not inherently bad, as it pays for the support and improvement of the product. Yet, it could be a deterrent for many.

Something similar to what Sidekiq is doing seems more appropriate - a FREE (free free) and an Enterprise version. Then, you can use the FREE version in any sort of a project, and if the project picks up, you can buy the enterprise version and benefit from the extra features.