I've been using Readng (now Oku) since the open beta, and I've fell in love with it the very seconds I dig into it.
Being the simplicity of the product, the well created UI and the honesty of the team's communication, it's been great from beginning to end.
While I still didn't feel the need of subscribing because I don't use the product enough to require the additional features such a reading goal, stats & cie, I would love to be able to purchase something like a "Support Pack", allowing to give money to the team to support their effort, even if it's just a one time purchase.
That being said, never say never, maybe using Oku will bring me a sense of accomplishment enough that I'd want to get into the reading competition and share my reading stats!
Congrats team, and keep up to good work! ✌️
Note: I don't use the mobile version, only the desktop one, and I love that you took care of crafting a solid desktop experience!