Thanks very much.<p>- Increasing price. Yes, it started at only $10&#x2F;year, and I&#x27;ve gradually increased it as the product has improved. It&#x27;s very difficult to know the optimal price. I use split testing for some things but it feels wrong to do this for price, and with current conversion rate it would take ages to get meaningful results anyway. I&#x27;m hesitant to push price too high because lowering it back down would be tricky. Existing users paying a higher price would be annoyed. Also, at this stage I think increasing the user base would be more valuable long term compared to milking the current users for more money. I&#x27;ve been wondering if I could add a higher priced tier in future for more advanced features.<p>- Yes! I definitely want to recommend texts to people based not only on difficulty, but also on interest. This is something that will become more valuable with more users and a larger, higher quality library of texts. It isn&#x27;t highest priority right now, but hopefully in future.<p>- Yes. I developed some features to target at teachers managing a class of students: <a href="http:&#x2F;&#x2F;blog.readlang.com&#x2F;2014&#x2F;02&#x2F;12&#x2F;readlang-for-teachers.html" rel="nofollow">http:&#x2F;&#x2F;blog.readlang.com&#x2F;2014&#x2F;02&#x2F;12&#x2F;readlang-for-teachers.ht...</a>. I got a bunch of teachers using it with real classes but decided to abandon the idea because: 1. The response was positive but usage wasn&#x27;t what I&#x27;d hoped. 2. Focus. As one guy I&#x27;ve got enough on my plate making an awesome product for self motivated individuals. Diluting my focus and the focus of the product seems like a very bad idea.