diff --git a/scripts/_common.sh b/scripts/_common.sh
index 45d1c9f..b610af8 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,6 +7,8 @@
 # dependencies used by the app
 pkg_dependencies="openjdk-8-jre-headless|openjdk-11-jre-headless debconf|debconf-2.0 procps uuid-runtime lua-ldap"
 
+ynh_app_dependencies="prosody_ynh"
+
 #=================================================
 # PERSONAL HELPERS
 #=================================================
@@ -23,3 +25,96 @@ ynh_version_gt ()
 #=================================================
 # FUTURE OFFICIAL HELPERS
 #=================================================
+
+#!/bin/bash
+
+# Install other YunoHost apps
+#
+# usage: ynh_install_apps --apps="a_ynh b_ynh?domain=DOMAIN&path=PATH&admin=USER&language=fr&is_public=1&password=pass&port=666"
+# | arg: -a, --apps=     - apps to install
+#
+# Requires YunoHost version *.*.* or higher.
+ynh_install_apps() {
+    # Declare an array to define the options of this helper.
+    local legacy_args=a
+    local -A args_array=([a]=apps=)
+    local apps
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+
+    # Split the list of apps in an array
+    local apps_list=($(echo $apps | tr " " "\n"))
+    
+    # For each app
+    for i in "${apps_list[@]}"
+    do
+        # Retrieve the name of the app (part before _ynh)
+        local oneapp=$(echo "$i" | awk -F'[_ynh]' '{print $1}')
+        [ -z "$oneapp" ] && ynh_die --message="You didn't provided a YunoHost app to install"
+
+        # Retrieve the arguments of the app (part after ?)
+        local oneargument=$(echo "$i" | awk -F'[?]' '{print $2}')
+        [ ! -z "$oneargument" ] && oneargument="--args \"$oneargument\""
+
+        if ! yunohost app list | grep -q "$oneapp"
+        then
+            yunohost tools update
+            yunohost app install $oneapp $oneargument
+        else
+            yunohost tools update
+            yunohost app upgrade $oneapp $oneargument
+        fi
+        ynh_app_setting_set --app=$app --key=require_$oneapp --value="1"
+    done
+}
+
+# Remove other YunoHost apps
+#
+# apps will be removed only if no other apps need them.
+#
+# usage: ynh_remove_apps --apps="a_ynh b_ynh?domain=DOMAIN&path=PATH&admin=USER&language=fr&is_public=1&password=pass&port=666"
+# | arg: -a, --apps=     - apps to install
+#
+# Requires YunoHost version *.*.* or higher.
+ynh_remove_apps() {
+    # Declare an array to define the options of this helper.
+    local legacy_args=a
+    local -A args_array=([a]=app=)
+    local app
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+
+    # Split the list of apps in an array
+    local apps_list=($(echo $apps | tr " " "\n"))
+    
+    # For each app
+    for i in "${apps_list[@]}"
+    do
+        # Retrieve the name of the app (part before _ynh)
+        local oneapp=$(echo "$i" | awk -F'[_ynh]' '{print $1}')
+        [ -z "$oneapp" ] && ynh_die --message="You didn't provided a YunoHost app to remove"
+
+        ynh_app_setting_delete --app=$app --key=require_$oneapp
+
+        # List apps requiring $oneapp
+        local installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
+        local required_by=""
+        local installed_app_required_by=""
+        for installed_app in $installed_apps
+        do
+            local installed_app_required_by=$(ynh_app_setting_get --app=$installed_app --key="require_$oneapp")
+            if [[ $installed_app_required_by ]]
+            then
+                required_by="${installed_app_required_by}"
+            fi
+            installed_app_required_by=""
+        done
+
+        # If $oneapp is no more required
+        if [[ ! $required_by ]]
+        then
+            # Remove $oneapp
+            ynh_print_info --message="Removing of $oneapp"
+            yunohost app remove $oneapp --purge
+    done
+}
diff --git a/scripts/install b/scripts/install
index 8f5f49d..80f1aac 100644
--- a/scripts/install
+++ b/scripts/install
@@ -95,19 +95,9 @@ ynh_app_setting_set --app=$app --key=port_component --value=$port_component
 #=================================================
 ynh_script_progression --message="Installing dependencies..."
 
+ynh_install_apps --apps="$ynh_app_dependencies"
 ynh_install_app_dependencies $pkg_dependencies
 
-if ! yunohost app list | grep -q "prosody"
-then
-	yunohost tools update
-	yunohost app install prosody
-else
-	yunohost tools update
-	yunohost app upgrade prosody
-fi
-
-ynh_app_setting_set --app=$app --key=require_prosody --value="1"
-
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index 5d6b44e..17aacb5 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -110,32 +110,7 @@ ynh_script_progression --message="Removing dependencies..."
 
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
-
-# Remove Prosody
-ynh_app_setting_delete --app=$app --key=require_prosody
-gpasswd --delete prosody $app
-
-# List apps requiring Prosody
-installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
-required_by=""
-installed_app_required_by=""
-for installed_app in $installed_apps
-do
-    installed_app_required_by=$(ynh_app_setting_get --app=$installed_app --key="require_prosody")
-    if [[ $installed_app_required_by ]]
-    then
-        required_by="${installed_app_required_by}"
-    fi
-    installed_app_required_by=""
-done
-
-# If Prosody is no more required
-if [[ ! $required_by ]]
-then
-    # Remove Prosody
-    ynh_print_info --message="Removing of Prosody"
-    yunohost app remove prosody --purge
-fi
+ynh_remove_apps --apps="$ynh_app_dependencies"
 
 #=================================================
 # CLOSE A PORT
diff --git a/scripts/restore b/scripts/restore
index 702caea..1192824 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -87,20 +87,9 @@ chown -R $app:$app "$final_path"
 ynh_script_progression --message="Reinstalling dependencies..."
 
 # Define and install dependencies
+ynh_install_apps --apps="$ynh_app_dependencies"
 ynh_install_app_dependencies $pkg_dependencies
 
-if ! yunohost app list | grep -q "prosody"
-then
-	yunohost tools update
-	yunohost app install prosody
-else
-	yunohost tools update
-	yunohost app upgrade prosody
-fi
-
-ynh_app_setting_set --app=$app --key=require_prosody --value="1"
-gpasswd --add prosody $app
-
 #=================================================
 # CONFIGURE FIREWALL
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index f08ebec..c67eefd 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -135,18 +135,9 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..."
 
+ynh_install_apps --apps="$ynh_app_dependencies"
 ynh_install_app_dependencies $pkg_dependencies
 
-if ! yunohost app list | grep -q "prosody"
-then
-	yunohost tools update
-	yunohost app install prosody
-else
-	yunohost tools update
-	yunohost app upgrade prosody
-fi
-
-ynh_app_setting_set --app=$app --key=require_prosody --value="1"
 gpasswd --add prosody $app
 
 #=================================================