diff --git a/apps/sleeplog/ChangeLog b/apps/sleeplog/ChangeLog
index e37283f09..0b7f686ee 100644
--- a/apps/sleeplog/ChangeLog
+++ b/apps/sleeplog/ChangeLog
@@ -1,4 +1,18 @@
 0.01: New App!
 0.02: Fix crash on start #1423
 0.03: Added power saving mode, move all read/write log actions into lib/module
-0.04: Fix #1445, display loading info while calculating sleep data
+0.04: Fix #1445, display loading info, add icons to display service states
+
+Update app.js
+ - adjust label position to improve readability on light themes
+ - add icons to display service states
+Update ChangeLog
+ - compact old and add new changes
+Update lib.js
+ - fix logfile correction in `setEnabled(...)` to make disable logging possible
+ - simplify logfile checks
+Update README.md
+ - add icons of the service states
+Update settings.js
+ - fix error on reading a non string logfile value
+Add icons: disabled.png, nolog.png and powersaving.png
diff --git a/apps/sleeplog/README.md b/apps/sleeplog/README.md
index 4cb136c71..10d9a6b0b 100644
--- a/apps/sleeplog/README.md
+++ b/apps/sleeplog/README.md
@@ -49,6 +49,7 @@ also provides a power saving mode using the built in movement calculation. The i
 * __Power Saving__  
   _on_ / __off__  
   En-/Disable power saving mode. _Saves battery, but might decrease accurracy._
+  In the app the following icon on the right indicates that power saving mode is enabled: ![](powersaving.png)
 * __Max Move__ | maximal movement threshold  
   (only available when on power saving mode)  
   _50_ / _51_ / _..._ / __100__ / _..._ / _200_  
@@ -65,10 +66,12 @@ also provides a power saving mode using the built in movement calculation. The i
 * __Enabled__  
   __on__ / _off_  
   En-/Disable the service (all background activities). _Saves the most battery, but might make this app useless._
+  In the app the following icon on the left indicates that the service is disabled: ![](disabled.png)
 * __Logfile__  
   __default__ / _off_  
   En-/Disable logging by setting the logfile to _sleeplog.log_ / _undefined_.  
   If the logfile has been customized it is displayed with _custom_.
+  In the app the following icon on the left indicates that logging is disabled: ![](nolog.png)
   
 ---
 ### Global Object and Module Functions
diff --git a/apps/sleeplog/app.js b/apps/sleeplog/app.js
index cf4ecc415..8077b4d62 100644
--- a/apps/sleeplog/app.js
+++ b/apps/sleeplog/app.js
@@ -64,7 +64,7 @@ function drawLog(topY, viewUntil) {
   for (var x = 0; x < hours; x++) {
     g.fillRect(x * stepwidth, y + 2, x * stepwidth, y + 4);
     g.setFontAlign(-1, -1).setFont("6x8")
-      .drawString((startHour + x) % 24, x * stepwidth, y + 6);
+      .drawString((startHour + x) % 24, x * stepwidth + 1, y + 6);
   }
 
   // define variables for sleep calculation
@@ -143,7 +143,7 @@ function drawAnalysis(toDate) {
   // draw log graphs and read outputs
   drawLog(110, toDate).forEach(
     (value, index) => outputs[index] += value);
-  drawLog(145, Date(toDate.valueOf() - 432E5)).forEach(
+  drawLog(144, Date(toDate.valueOf() - 432E5)).forEach(
     (value, index) => outputs[index] += value);
 
   // draw outputs
@@ -176,12 +176,22 @@ function drawNightTo(prevDays) {
   // clear heading area
   g.clearRect(0, 24, width, 70);
 
-  // display service statuses: service, loggging and powersaving 
-  g.setColor(global.sleeplog && sleeplog.enabled && sleeplog.logfile ? sleeplog.powersaving ? 2016 : g.theme.bg : 63488);
-  g.fillRect(0, 30, width, 66).reset();
+  // display service states: service, loggging and powersaving
+  if (!sleeplog.enabled) {
+    // draw disabled service icon
+    g.setColor(1, 0, 0)
+      .drawImage(atob("FBSBAAH4AH/gH/+D//w/n8f5/nud7znP85z/f+/3/v8/z/P895+efGPj4Hw//8H/+Af+AB+A"), 2, 36);
+  } else if (!sleeplog.logfile) {
+    // draw disabled log icon
+    g.reset().drawImage(atob("EA6BAM//z/8AAAAAz//P/wAAAADP/8//AAAAAM//z/8="), 4, 40)
+      .setColor(1, 0, 0).fillPoly([2, 38, 4, 36, 22, 54, 20, 56]);
+  }
+  // draw power saving icon
+  if (sleeplog.powersaving) g.setColor(0, 1, 0)
+    .drawImage(atob("FBSBAAAAcAD/AH/wP/4P/+H//h//4//+fv/nj/7x/88//Of/jH/4j/8I/+Af+AH+AD8AA4AA"), width - 22, 36);
 
   // draw headline
-  g.setFont("12x20").setFontAlign(0, -1);
+  g.reset().setFont("12x20").setFontAlign(0, -1);
   g.drawString("Night to " + require('locale').dow(toDate, 1) + "\n" +
     require('locale').date(toDate, 1), center, 30);
 
@@ -195,7 +205,7 @@ function drawNightTo(prevDays) {
 
   // calculate and draw analysis after timeout for faster feedback
   if (ATID) ATID = clearTimeout(ATID);
-  ATID = setTimeout(drawAnalysis, 50, toDate);
+  ATID = setTimeout(drawAnalysis, 100, toDate);
 }
 
 // define function to draw and setup UI
diff --git a/apps/sleeplog/disabled.png b/apps/sleeplog/disabled.png
new file mode 100644
index 000000000..ea487b48c
Binary files /dev/null and b/apps/sleeplog/disabled.png differ
diff --git a/apps/sleeplog/lib.js b/apps/sleeplog/lib.js
index 1fbd3d2cb..7b35d8a85 100644
--- a/apps/sleeplog/lib.js
+++ b/apps/sleeplog/lib.js
@@ -5,8 +5,8 @@ exports = {
     if (typeof global.sleeplog !== "object") return;
 
     // set default logfile
-    logfile = (typeof logfile === "string" && logfile.endsWith(".log")) ? logfile :
-      logfile === false ? undefined : "sleeplog.log";
+    if ((typeof logfile !== "string" || !logfile.endsWith(".log")) &&
+      logfile !== false) logfile = "sleeplog.log";
 
     // stop if enabled
     if (global.sleeplog.enabled) global.sleeplog.stop();
@@ -40,8 +40,9 @@ exports = {
   // - string // additional information
   readLog: function(logfile, since, until) {
     // check/set logfile
-    logfile = typeof logfile === "string" && logfile.endsWith(".log") ? logfile :
-      (global.sleeplog || {}).logfile || "sleeplog.log";
+    if (typeof logfile !== "string" || !logfile.endsWith(".log")) {
+      logfile = (global.sleeplog || {}).logfile || "sleeplog.log";
+    }
 
     // check if since is in the future
     if (since > Date()) return [];
@@ -73,8 +74,10 @@ exports = {
   // replace log with input if at least one entry like above is inside another array
   writeLog: function(logfile, input) {
     // check/set logfile
-    logfile = typeof logfile === "string" && logfile.endsWith(".log") ? logfile :
-      (global.sleeplog || {}).logfile || "sleeplog.log";
+    if (typeof logfile !== "string" || !logfile.endsWith(".log")) {
+      if (!global.sleeplog || sleeplog.logfile === false) return;
+      logfile = sleeplog.logfile || "sleeplog.log";
+    }
 
     // check if input is an array
     if (typeof input !== "object" || typeof input.length !== "number") return;
diff --git a/apps/sleeplog/nolog.png b/apps/sleeplog/nolog.png
new file mode 100644
index 000000000..b153b5769
Binary files /dev/null and b/apps/sleeplog/nolog.png differ
diff --git a/apps/sleeplog/powersaving.png b/apps/sleeplog/powersaving.png
new file mode 100644
index 000000000..8e7d9fb2c
Binary files /dev/null and b/apps/sleeplog/powersaving.png differ
diff --git a/apps/sleeplog/settings.js b/apps/sleeplog/settings.js
index ffc014337..11c7c0adb 100644
--- a/apps/sleeplog/settings.js
+++ b/apps/sleeplog/settings.js
@@ -127,7 +127,7 @@
         }
       },
       "Logfile ": {
-        value: settings.logfile === "sleeplog.log" ? true : settings.logfile.endsWith(".log") ? "custom" : false,
+        value: settings.logfile === "sleeplog.log" ? true : (settings.logfile || "").endsWith(".log") ? "custom" : false,
         format: v => v === true ? "default" : v ? "custom" : "off",
         onchange: function(v) {
           if (v !== "custom") {