diff --git a/metadata/com.googlecode.chartdroid.yml b/metadata/com.googlecode.chartdroid.yml
index 9cdb4776bb..d78ef3b7a0 100644
--- a/metadata/com.googlecode.chartdroid.yml
+++ b/metadata/com.googlecode.chartdroid.yml
@@ -9,7 +9,13 @@ Description: |-
     You don't need to install this unless another app needs it. ChartDroid is an
     Intent-based "library application" for static chart and graph generation on
     Android. Other applications can use it to graph/plot/display numerical data in
-    many representations by implementing a ContentProvider.
+    many representations by implementing a ContentProvider according to this simple
+    [specification](https://code.google.com/archive/p/chartdroid/wikis/InterfaceSpecification.wiki).
+
+    ChartDroid is consistent with the "Unix toolkit" philosophy of building small,
+    interoperable tools. Having ChartDroid exist as an independent application
+    (as against being an importable .jars library) conserves storage space and
+    eliminates redundant code.
 
 RepoType: git
 Repo: https://github.com/kostmo/chartdroid