My Android location sharing app[1], while still barely known, has generated a lot of great feedback and personal &quot;thank you&quot; emails.<p>It&#x27;s barely made any money (40€ in a year or so), but the great feedback makes it all good.<p>[1] <a href="https:&#x2F;&#x2F;graticule.link&#x2F;" rel="nofollow">https:&#x2F;&#x2F;graticule.link&#x2F;</a>