diff --git a/Competing-Apps.md b/Competing-Apps.md
index d6ebc1b..8aef089 100644
--- a/Competing-Apps.md
+++ b/Competing-Apps.md
@@ -20,8 +20,10 @@ Just a collection of competitive apps.
 | [Trustera](https://play.google.com/store/apps/details?id=com.trusteracorp.androidmail) | closed |
 | [PEP Android app](http://pep-project.org)  | GPL |
 | https://protonmail.ch/ | ? |
+| [EmailSecure](https://play.google.com/store/apps/details?id=com.safetyjabber.emailsecure) | ? |
 
-## Other end-to-end email encryption tools
+
+## Other end-to-end email encryption tools (NOT OpenPGP compatible)
 | Name | License |
 |----  | -----   |
 | [Tutanota](https://tutanota.com/de/) (https://news.ycombinator.com/item?id=9616743) | GPLv3 |