Good question, it's similar indeed but in our experience Appetize is significantly slower.
We are also going to focus on collaboration between team members as opposed to testing and training.
Yes our free tier should be more performant than theirs. In the future, we want to differentiate on collaboration features.
For the session limit: we haven't added it to the pricing page yet but we have an option to pay as you go which removes the 15 minute timeout.