No shade to anyone who uses Sync, but the egregious thing to me is the price. Sync isn’t making the content, just like Reddit wasn’t, and they’re setting the price at a level that it feels like that’s what you’re paying for.
Any comparison to other software makes this pretty clear. If it were $4.99, I’d say that’s relatively fair, but charging 1/3rd of the cost of a new video game for an app that took less than 1/3rd of the resources to produce seems a bit absurd.
People can spend their money however they want, but I also don’t think it’s completely uncalled for to criticize the company for what appears to be price gouging.