A: Hi there, thank you for your question.

I tried to summarize the key differences here: https://appsumo.com/products/voila/questions/hi-i-want-to-buy-voila-tier-1-in-feat-1350050/#1350286

We do believe that the UX and the fact that Voilà is always available, can work with the context of what you are currently doing (e.g. email thread in Gmail, current website, ...) makes a huge difference in the usability and therefore impact on your productivity.
Furthermore, our custom actions feature lets you extend Voilà's functionality and improve the way how it is integrated with your workflow.

I encourage you to give it a try and experience the difference firsthand.

Best,
Michal