Don&#x27;t think this is by the same people, but I&#x27;ve used <a href="https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=coolcherrytrees.software.detexify&amp;hl=en" rel="nofollow">https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=coolcherrytree...</a>