I've considered buying the pro account, but I feel it's a waste if all it does is remove the watermark. There should be some other features accessible if I would buy pro. I'm not really sure on what new features to add; maybe you could have a feature to play multiple instruments only accessible to pro, or restrict some free features to the pro level. Another idea is just to make the watermark smaller. I personally don't mind having the watermark, but it is very visually distracting. I understand you want that attention because of the intense amount of work you put into this, but still...
It's a suggestion. SeeMusic is an otherwise great app, and it really deserves more attention. I'm willing to advertise this on YouTube, but just not in the video. Maybe a pinned comment or something. Either way, it's going to get the same amount of recognition.
The app is set up to allow users to test all the features before investing in a subscription. I think that generally the flow is working well for the app as it stands right now...
Thanks for your feedback, hope you'll consider purchasing a subscription and supporting the app!
I purchased a yearly license, not to get rid of the watermark but to support the developer. The yearly license comes out to a little more than A dollar a month. Certainly not excessive.