The sandbox is free, but data persistence is one of the premium features (though there is also a free trial for premium).

My thought process was that I wanted to make as much of the planning functionality as I could free to try and low-friction. I'm always open to feedback on pricing model though. Sounds like you would prefer to see a level of persistence in the free tier? If you have more thoughts on how that should work, let me know!

If you want to make it a lifetime thing maybe consider giving 6+ month trials to hook people in and show skin. I considered this for this type of app. Congratulations on the launch!

Thanks, good point. I do grant extended trials on request (as described on the pricing page), but maybe I should make that a more prominent thing?

I think you could easily use it to drive a point home: It's designed to be a for life SaaS -- and you believe in that design so much that the first year of many to come is on you.