diff --git a/check_process b/check_process
index 5d6a6bc..46082e3 100644
--- a/check_process
+++ b/check_process
@@ -10,6 +10,8 @@ data=1
 app="all"
 allow_extra_space_use=1
 on_calendar="Daily"
+check_on_calendar="*-*-8,15,22 3:15"
+check_read_data_on_calendar="*-*-1 3:15"
 ; Checks
 pkg_linter=1
 setup_sub_dir=0
diff --git a/conf/backup_method.j2 b/conf/backup_method.j2
index 523c536..dd390d9 100644
--- a/conf/backup_method.j2
+++ b/conf/backup_method.j2
@@ -34,16 +34,13 @@ do_backup() {
     pushd $work_dir
     $RESTIC_COMMAND backup ./ >> $LOGFILE 2>> $ERRFILE
     backup_return_code="$?"
-    $RESTIC_COMMAND check >> $LOGFILE 2>> $ERRFILE
-    check_return_code="$?"
     popd
 
     # On ne nettoie que si la sauvegarde s'est bien passee
-    if [ "$backup_return_code" -eq "0" ] && [ "$check_return_code" -eq 0 ];then
+    if [ "$backup_return_code" -eq "0" ];then
         $RESTIC_COMMAND forget --keep-daily 7 --keep-weekly 8 --keep-monthly 12 >> $LOGFILE 2>> $ERRFILE
     else
-        [ "$backup_return_code" -ne 0 ] && echo "Something went wrong during backup" >> $ERRFILE
-        [ "$check_return_code" -ne 0 ] && echo "Repository check did not return 0" >> $ERRFILE
+        echo "Something went wrong during backup" >> $ERRFILE
         exit 1
     fi
 }
diff --git a/conf/check-restic.j2 b/conf/check-restic.j2
new file mode 100644
index 0000000..2c6dd8c
--- /dev/null
+++ b/conf/check-restic.j2
@@ -0,0 +1,46 @@
+#!/bin/bash
+LOCK_FILE=/tmp/{{ app }}_check.lock
+EXIT_PROPERLY() {
+  echo -e "\e[91m \e[1m"    # Shell in light red bold
+  echo -e "!!\n  Caught an interruption signal,  removing lock file...\n!!"
+  echo -e "\e[22m"    # Remove bold
+
+  rm $LOCK_FILE
+  exit 1
+}
+trap EXIT_PROPERLY 1 2 3 6 15
+if [ -f "$LOCK_FILE" ];then
+  echo "Check already launched by process $(grep '.*' $LOCK_FILE), canceling this one" >&2
+  exit 1
+fi
+echo $$ > "$LOCK_FILE"
+
+CHECK_READ_DATA=${1:-0}
+
+# Check system part conf
+conf=$(yunohost app setting {{ app }} conf)
+if [ $conf -eq 1 ];then
+  {{final_path}}/check_method auto_conf ${CHECK_READ_DATA}
+fi
+
+# Check system data
+data=$(yunohost app setting {{ app }} data)
+if [ $data -eq 1 ];then
+  {{final_path}}/check_method auto_data ${CHECK_READ_DATA}
+fi
+
+# Check all apps independently
+apps=$(yunohost app setting {{ app }} apps)
+for app in $(yunohost app list --installed -b | grep id: | cut -d: -f2); do
+  check_app=false
+  for selected_app in $(echo $apps | tr "," " ");do
+    if [[ "$selected_app" == "$app" ]] || [ "$apps" = "all" ]; then
+      check_app=true
+      break
+    fi
+  done
+  if [ "$check_app" == "true" ];then
+    {{final_path}}/check_method auto_${app} ${CHECK_READ_DATA}
+  fi
+done
+rm "$LOCK_FILE"
diff --git a/conf/check_method.j2 b/conf/check_method.j2
new file mode 100644
index 0000000..c8ada6a
--- /dev/null
+++ b/conf/check_method.j2
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -e
+
+RESTIC_PASSWORD="{{ passphrase }}"
+RESTIC_REPOSITORY_BASE=sftp:{{ server }}:{{ backup_path }}
+RESTIC_COMMAND=/usr/local/bin/restic
+
+do_check() {
+
+    local name="$1"
+    local check_read_data="$2"
+    export RESTIC_PASSWORD
+    export RESTIC_REPOSITORY=${RESTIC_REPOSITORY_BASE}/$name
+    LOGFILE=/var/log/restic_check.log
+    ERRFILE=/var/log/restic_check.err
+    current_date=$(date +"%d_%m_%y_%H:%M")
+    echo -e "\n==============\n${current_date}\n==============\n" | tee -a ${LOGFILE} | tee -a ${ERRFILE}
+    if [ "$check_read_data" -eq "1" ];then
+      $RESTIC_COMMAND check --read-data >> $LOGFILE 2>> $ERRFILE
+    else
+      $RESTIC_COMMAND check >> $LOGFILE 2>> $ERRFILE
+    fi
+    check_return_code="$?"
+    return "${check_return_code}"
+}
+
+name=$1
+check_read_data=${2:-0}
+
+do_check "${name}" "${check_read_data}"
+
+exit 0
diff --git a/conf/systemd_check.service b/conf/systemd_check.service
new file mode 100644
index 0000000..d89608d
--- /dev/null
+++ b/conf/systemd_check.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=Check backup __APP__
+After=network.target
+
+[Service]
+Type=oneshot
+ExecStart=__FINALPATH__/check-__APP__
+ExecStartPost=/bin/bash -c 'echo -e "Subject: YunoHost Restic check log on $(hostname)\n$(/bin/journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value __APP___check.service`)" | /usr/sbin/sendmail root'
+User=root
+Group=root
+
+[Install]
+WantedBy=multi-user.target
diff --git a/conf/systemd_check.timer.j2 b/conf/systemd_check.timer.j2
new file mode 100644
index 0000000..f2c8287
--- /dev/null
+++ b/conf/systemd_check.timer.j2
@@ -0,0 +1,8 @@
+[Unit]
+Description=Check {{ app }} backup regularly
+
+[Timer]
+OnCalendar={{ check_on_calendar }}
+
+[Install]
+WantedBy=timers.target
diff --git a/conf/systemd_check_read_data.service b/conf/systemd_check_read_data.service
new file mode 100644
index 0000000..c5ee981
--- /dev/null
+++ b/conf/systemd_check_read_data.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=Complete check backup __APP__
+After=network.target
+
+[Service]
+Type=oneshot
+ExecStart=__FINALPATH__/check-__APP__ "1"
+ExecStartPost=/bin/bash -c 'echo -e "Subject: YunoHost Restic complete check log on $(hostname)\n$(/bin/journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value __APP___check_read_data.service`)" | /usr/sbin/sendmail root'
+User=root
+Group=root
+
+[Install]
+WantedBy=multi-user.target
diff --git a/conf/systemd_check_read_data.timer.j2 b/conf/systemd_check_read_data.timer.j2
new file mode 100644
index 0000000..cff10dc
--- /dev/null
+++ b/conf/systemd_check_read_data.timer.j2
@@ -0,0 +1,8 @@
+[Unit]
+Description=Complete check {{ app }} backup regularly
+
+[Timer]
+OnCalendar={{ check_read_data_on_calendar }}
+
+[Install]
+WantedBy=timers.target
diff --git a/manifest.json b/manifest.json
index 311ae9f..a042991 100644
--- a/manifest.json
+++ b/manifest.json
@@ -128,6 +128,26 @@
         },
         "example": "Daily",
         "default": "Daily"
+      },
+      {
+        "name": "check_on_calendar",
+        "type": "string",
+        "ask": {
+          "en": "Indicate the backup check frequency (see systemd OnCalendar format)",
+          "fr": "Indiquez la fréquence de vérification de la sauvegarde (voir le format OnCalendar de systemd)"
+        },
+        "example": "Tue *-*-* 00:15:00",
+        "default": "*-*-8,15,22 3:15:00"
+      },
+      {
+        "name": "check_read_data_on_calendar",
+        "type": "string",
+        "ask": {
+          "en": "Indicate the complete backup check frequency (see systemd OnCalendar format)",
+          "fr": "Indiquez la fréquence de vérification complète de la sauvegarde (voir le format OnCalendar de systemd)"
+        },
+        "example": "Tue *-*-* 00:15:00",
+        "default": "*-*-1 1:15:00"
       }
     ]
   }
diff --git a/scripts/install b/scripts/install
index ccf2dfb..c9fe5c8 100755
--- a/scripts/install
+++ b/scripts/install
@@ -20,14 +20,15 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
 export app=$YNH_APP_INSTANCE_NAME
+export final_path="/opt/yunohost/${app}"
 
 # Retrieve arguments
-ynh_export server port ssh_user backup_path passphrase on_calendar conf data apps allow_extra_space_use
+ynh_export server port ssh_user backup_path passphrase on_calendar check_on_calendar check_read_data_on_calendar conf data apps allow_extra_space_use
 
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_save_args server port ssh_user backup_path passphrase on_calendar conf data apps allow_extra_space_use
+ynh_save_args server port ssh_user backup_path passphrase on_calendar check_on_calendar check_read_data_on_calendar conf data apps allow_extra_space_use
 
 #=================================================
 # INSTALL DEPENDENCIES
@@ -49,19 +50,31 @@ mkdir -p /usr/share/yunohost/backup_method
 #=================================================
 ynh_print_info --message="Setting up backup methods"
 ynh_configure backup_method "/etc/yunohost/hooks.d/backup_method/05-${app}_app"
+ynh_configure check_method "${final_path}/check_method"
 
 #=================================================
 # CONFIGURE CRON
 #=================================================
 ynh_print_info --message="Configuring cron"
-ynh_configure backup-with-restic "/usr/local/bin/backup-with-$app"
-ynh_configure backup-with-restic-answerbot "/usr/local/bin/backup-with-$app-answerbot"
-chmod u+x "/usr/local/bin/backup-with-$app"
-chmod u+x "/usr/local/bin/backup-with-$app-answerbot"
-ynh_add_systemd_config
-ynh_configure systemd.timer "/etc/systemd/system/$app.timer"
-systemctl enable $app.timer
-systemctl start $app.timer
+ynh_configure backup-with-restic "/usr/local/bin/backup-with-${app}"
+ynh_configure backup-with-restic-answerbot "/usr/local/bin/backup-with-${app}-answerbot"
+ynh_configure check-restic "${final_path}/check-${app}"
+chmod u+x "/usr/local/bin/backup-with-${app}"
+chmod u+x "/usr/local/bin/backup-with-${app}-answerbot"
+chmod u+x "${final_path}/check-${app}"
+chmod u+x "${final_path}/check_method"
+ynh_add_systemd_config --service=${app} --template=systemd.service
+ynh_add_systemd_config --service=${app}_check --template=systemd_check.service
+ynh_add_systemd_config --service=${app}_check_read_data --template=systemd_check_read_data.service
+ynh_configure systemd.timer "/etc/systemd/system/${app}.timer"
+ynh_configure systemd_check.timer "/etc/systemd/system/${app}_check.timer"
+ynh_configure systemd_check_read_data.timer "/etc/systemd/system/${app}_check_read_data.timer"
+systemctl enable ${app}.timer
+systemctl enable ${app}_check.timer
+systemctl enable ${app}_check_read_data.timer
+systemctl start ${app}.timer
+systemctl start ${app}_check.timer
+systemctl start ${app}_check_read_data.timer
 
 #=================================================
 # GENERATE SSH KEY
diff --git a/scripts/remove b/scripts/remove
index 4dbc51e..109583d 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -23,12 +23,20 @@ ynh_remove_app_dependencies
 #=================================================
 # REMOVE FILES
 #=================================================
-systemctl stop $app.timer
-systemctl disable $app.timer
-ynh_remove_systemd_config
-ynh_secure_remove "/etc/systemd/system/$app.timer"
-ynh_secure_remove "/usr/local/bin/backup-with-$app"
+systemctl stop ${app}.timer
+systemctl disable ${app}.timer
+ynh_remove_systemd_config --service=${app}
+ynh_remove_systemd_config --service=${app}_check
+ynh_remove_systemd_config --service=${app}_check_read_data
+ynh_secure_remove "/etc/systemd/system/${app}.timer"
+ynh_secure_remove "/etc/systemd/system/${app}_check.timer"
+ynh_secure_remove "/etc/systemd/system/${app}_check_read_data.timer"
+ynh_secure_remove "/usr/local/bin/backup-with-${app}"
+ynh_secure_remove "/usr/local/bin/check-${app}"
+ynh_secure_remove "/usr/local/bin/check-read-data-${app}"
 ynh_secure_remove "/etc/yunohost/hooks.d/backup_method/05-${app}_app"
+ynh_secure_remove "/etc/yunohost/hooks.d/backup_method/05-${app}_check_app"
+ynh_secure_remove "/etc/yunohost/hooks.d/backup_method/05-${app}_check_read_data_app"
 
 #=================================================
 # REMOVE SSH CONFIG