diff --git a/Android/Firebase.md b/Android/Firebase.md
deleted file mode 100644
index a10c45a..0000000
--- a/Android/Firebase.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# [Firebase](https://firebase.google.com/) notes
-
-> A comprehensive app development platform
-
-[Firebase Docs](https://firebase.google.com/docs)
-
-**Warning**: Google Analitycs can cause conflicts with the GDPR if user data is used in the app.
-
-To link Firebase with the app it's necessary to download `google-services.json`.
diff --git a/iOS/CoreData.md b/iOS/CoreData.md
deleted file mode 100644
index 4697790..0000000
--- a/iOS/CoreData.md
+++ /dev/null
@@ -1,15 +0,0 @@
-# Core Data
-
-Internal device data memorization in integrated DB.
-Used to store data from API for offline use.
-
-The data added or update at app launch from the APIs.
-
-## CoreData Structure
-
-CoreData are handled by the file `.xcdatamodel` which contains info about the *Entities* that will contain data.
-
-The structure is similar to a DB on file (postgreSQL, sqlite).
-Entities are equivalent to relational DBs tables.
-
-An Entity is identified by a name what will be used in read/write operations.