I distrust anonymous apps and am unlikely to install.
Create some credibility on your landing page - a name, a link to Github profile, anything to put a human face to this.
@timshnaider This is the disadvantage of the commercial world. You create a free app and if you want to avoid those blockers you have 2 options actually. Put it into the app store and pay $99/year or buy app certificate for about $250 - $350/year.
Invoice generator
Release Monitor
Release Monitor
Product Hunt