&gt; More importantly, they would want features that I don&#x27;t care about.<p>&gt; I feel like I have a reasonable barometer for what&#x27;s useful<p>Those two statements right there are holding you back. 1) You should ALWAYS be considering features that users want if you&#x27;re trying to become profitable. If this was a charity app then sure, do whatever you want. BUT this is not, according to your blog. Put the user&#x27;s needs before your own. 2) You may have a decent feel of what it takes to learn a language but I bet you a day of true market research would open your eyes to features&#x2F;enhancements that you would have never even considered.<p>Anyway, that&#x27;s my 2 cents. I think the app is really cool!