Who's in this situation?
If you (like me) are in this situation, let's exchange fresh eyes and an hour of our time to test-drive each other's services and report our impressions.
Leave a comment below with a short description of what your service does in practice (not a pitch), with any special requirements, so that I or other would-be test-drivers can ensure there's no blocker to helping. For example, my service sends web pages from a computer/smartphone to an e-reader/tablet, so you'd need an e-reader or tablet to test-drive it.
I'm happy to help you with testing.
Also, UserTesting.com used to offer some free user testing sessions, so make sure to check it out. I can't find that offer now, but here are few alternatives: https://www.producthunt.com/alternatives/peek-by-usertesting