No updates to Android App since 2019?

Just got my V2 server configured. The android app froze a couple of times during the process (Pixel 2), so I checked its entry on the Google Play store for release notes.

The stats indicate the latest version is 1.3.1 last updated on Jul 22, 2019.

Given that the Helm security model relies so heavily on the running device application, I would have expected updates to come more frequently. Has there really been no security flaws discovered or features added over the last 2+ years?