diff --git a/README.md b/README.md
index fbba683..878a6cb 100644
--- a/README.md
+++ b/README.md
@@ -365,6 +365,7 @@ A list of **Free** and **Open Source Software** ***(FOSS)*** for **Android** –
 ### • Maps & Navigation
 
 * [**GMaps WV**](https://gitlab.com/divested-mobile/maps) <sup>**[[F-Droid](https://www.f-droid.org/app/us.spotco.maps)]**</sup>
+* [**OpenTopoMap Viewer**](https://github.com/Pygmalion69/OpenTopoMapViewer) <sup>**[[F-Droid](https://f-droid.org/app/org.nitri.opentopo)]**</sup>
 * [**Organic Maps**](https://github.com/organicmaps/organicmaps) <sup>**[[F-Droid](https://f-droid.org/app/app.organicmaps)]**</sup>
 * [**OsmAnd~**](http://osmand.net/) <sup>**[[F-Droid](https://f-droid.org/app/net.osmand.plus)]**</sup>
 * [**Private Location**](https://github.com/wesaphzt/privatelocation) <sup>**[[F-Droid](https://f-droid.org/app/com.wesaphzt.privatelocation)]**</sup>