Android apps have shared access to the &quot;memory card&quot; (often simulated, e.g. on Nexus devices), so they can interact through that.<p>Hell, in Android you can even run Debian without rooting: <a href="https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.cuntubuntu&amp;hl=en" rel="nofollow">https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.cuntubuntu...</a>