diff --git a/apps.json b/apps.json
index 5b024eb97..b58fad5ce 100644
--- a/apps.json
+++ b/apps.json
@@ -78,7 +78,7 @@
   { "id": "welcome",
     "name": "Welcome",
     "icon": "app.png",
-    "version":"0.07",
+    "version":"0.08",
     "description": "Appears at first boot and explains how to use Bangle.js",
     "tags": "start,welcome",
     "allow_emulator":true,
@@ -86,8 +86,10 @@
       {"name":"welcome.boot.js","url":"boot.js"},
       {"name":"welcome.app.js","url":"app.js"},
       {"name":"welcome.settings.js","url":"settings.js"},
-      {"name":"welcome.settings.json","url":"settings-default.json","evaluate":true},
       {"name":"welcome.img","url":"app-icon.js","evaluate":true}
+    ],
+    "data": [
+      {"name":"welcome.json"}
     ]
   },
   { "id": "gbridge",
@@ -120,13 +122,12 @@
   { "id": "setting",
     "name": "Settings",
     "icon": "settings.png",
-    "version":"0.17",
+    "version":"0.18",
     "description": "A menu for setting up Bangle.js",
     "tags": "tool,system",
     "storage": [
       {"name":"setting.app.js","url":"settings.js"},
       {"name":"setting.boot.js","url":"boot.js"},
-      {"name":"setting.json","url":"settings-default.json","evaluate":true},
       {"name":"setting.img","url":"settings-icon.js","evaluate":true}
     ],
     "sortorder" : -2
@@ -135,16 +136,18 @@
     "name": "Default Alarm",
     "shortName":"Alarms",
     "icon": "app.png",
-    "version":"0.06",
+    "version":"0.07",
     "description": "Set and respond to alarms",
     "tags": "tool,alarm,widget",
     "storage": [
       {"name":"alarm.app.js","url":"app.js"},
       {"name":"alarm.boot.js","url":"boot.js"},
       {"name":"alarm.js","url":"alarm.js"},
-      {"name":"alarm.json","content":"[]"},
       {"name":"alarm.img","url":"app-icon.js","evaluate":true},
       {"name":"alarm.wid.js","url":"widget.js"}
+    ],
+    "data": [
+      {"name":"alarm.json"}
     ]
   },
   { "id": "wclock",
@@ -280,15 +283,18 @@
   { "id": "gpsrec",
     "name": "GPS Recorder",
     "icon": "app.png",
-    "version":"0.07",
+    "version":"0.08",
     "interface": "interface.html",
     "description": "Application that allows you to record a GPS track. Can run in background",
     "tags": "tool,outdoors,gps,widget",
     "storage": [
       {"name":"gpsrec.app.js","url":"app.js"},
-      {"name":"gpsrec.json","url":"app-settings.json","evaluate":true},
       {"name":"gpsrec.img","url":"app-icon.js","evaluate":true},
       {"name":"gpsrec.wid.js","url":"widget.js"}
+    ],
+    "data": [
+      {"name":"gpsrec.json"},
+      {"wildcard":".gpsrc?","storageFile": true}
     ]
   },
   { "id": "gpsnav",
@@ -306,15 +312,18 @@
   { "id": "heart",
     "name": "Heart Rate Recorder",
     "icon": "app.png",
-    "version":"0.01",
+    "version":"0.02",
     "interface": "interface.html",
     "description": "Application that allows you to record your heart rate. Can run in background",
     "tags": "tool,health,widget",
     "storage": [
       {"name":"heart.app.js","url":"app.js"},
-      {"name":"heart.json","url":"app-settings.json","evaluate":true},
       {"name":"heart.img","url":"app-icon.js","evaluate":true},
       {"name":"heart.wid.js","url":"widget.js"}
+    ],
+    "data": [
+      {"name":"heart.json"},
+      {"wildcard":".heart?","storageFile": true}
     ]
   },
   { "id": "slevel",
@@ -354,14 +363,16 @@
     "name": "Battery Level Widget (with percentage)",
     "shortName": "Battery Widget",
     "icon": "widget.png",
-    "version":"0.10",
+    "version":"0.11",
     "description": "Show the current battery level and charging status in the top right of the clock, with charge percentage",
     "tags": "widget,battery",
     "type":"widget",
     "storage": [
       {"name":"widbatpc.wid.js","url":"widget.js"},
-      {"name":"widbatpc.settings.js","url":"settings.js"},
-      {"name":"widbatpc.settings.json","content": "{}"}
+      {"name":"widbatpc.settings.js","url":"settings.js"}
+    ],
+    "data": [
+      {"name":"widbatpc.json"}
     ]
   },
   { "id": "widbt",
@@ -529,20 +540,22 @@
     "id": "ncstart",
     "name": "NCEU Startup",
     "icon": "start.png",
-    "version":"0.04",
+    "version":"0.05",
     "description": "NodeConfEU 2019 'First Start' Sequence",
     "tags": "start,welcome",
     "storage": [
       {"name":"ncstart.app.js","url":"start.js"},
       {"name":"ncstart.boot.js","url":"boot.js"},
       {"name":"ncstart.settings.js","url":"settings.js"},
-      {"name":"ncstart.settings.json","url":"settings-default.json","evaluate":true},
       {"name":"ncstart.img","url":"start-icon.js","evaluate":true},
       {"name":"nc-bangle.img","url":"start-bangle.js","evaluate":true},
       {"name":"nc-nceu.img","url":"start-nceu.js","evaluate":true},
       {"name":"nc-nfr.img","url":"start-nfr.js","evaluate":true},
       {"name":"nc-nodew.img","url":"start-nodew.js","evaluate":true},
       {"name":"nc-tf.img","url":"start-tf.js","evaluate":true}
+    ],
+    "data": [
+      {"name":"ncstart.json"}
     ]
   },
   { "id": "ncfrun",
@@ -1234,7 +1247,7 @@
     "name": "Numerals Clock",
     "shortName": "Numerals Clock",
     "icon": "numerals.png",
-    "version":"0.03",
+    "version":"0.04",
     "description": "A simple big numerals clock",
     "tags": "numerals,clock",
 	"type":"clock",
@@ -1242,8 +1255,10 @@
     "storage": [
       {"name":"numerals.app.js","url":"numerals.app.js"},
       {"name":"numerals.img","url":"numerals-icon.js","evaluate":true},
-	    {"name":"numerals.settings.js","url":"numerals.settings.js"},
-      {"name":"numerals.json","url":"numerals-default.json","evaluate":true}
+      {"name":"numerals.settings.js","url":"numerals.settings.js"}
+    ],
+    "data":[
+      {"name":"numerals.json"}
     ]
   },
   { "id": "bledetect",
diff --git a/apps/alarm/ChangeLog b/apps/alarm/ChangeLog
index 2ff60e658..ca92a0d97 100644
--- a/apps/alarm/ChangeLog
+++ b/apps/alarm/ChangeLog
@@ -4,3 +4,4 @@
 0.04: Tweaks for variable size widget system
 0.05: Add alarm.boot.js and move code from the bootloader
 0.06: Change 'New Alarm' to 'Save', allow Deletion of Alarms
+0.07: Don't overwrite existing settings on app update
diff --git a/apps/gpsrec/ChangeLog b/apps/gpsrec/ChangeLog
index 8f1c575a1..17678bf3a 100644
--- a/apps/gpsrec/ChangeLog
+++ b/apps/gpsrec/ChangeLog
@@ -5,3 +5,5 @@
 0.05: Tweaks for variable size widget system
 0.06: Ensure widget update itself (fix #118) and change to using icons
 0.07: Added @jeffmer's awesome track viewer
+0.08: Don't overwrite existing settings on app update
+      Clean up recorded tracks on app removal
diff --git a/apps/heart/ChangeLog b/apps/heart/ChangeLog
index 4c4db83bc..70134af27 100644
--- a/apps/heart/ChangeLog
+++ b/apps/heart/ChangeLog
@@ -1,2 +1,3 @@
 0.01: New App!
-
+0.02: Don't overwrite existing settings on app update
+      Clean up recordings on app removal
diff --git a/apps/ncstart/ChangeLog b/apps/ncstart/ChangeLog
index f4418827e..522633f7b 100644
--- a/apps/ncstart/ChangeLog
+++ b/apps/ncstart/ChangeLog
@@ -5,3 +5,4 @@
 0.04: Run again when updated
       Don't run again when settings app is updated (or absent)
       Add "Run Now" option to settings
+0.05: Don't overwrite existing settings on app update
diff --git a/apps/ncstart/boot.js b/apps/ncstart/boot.js
index e3f514f5b..094033094 100644
--- a/apps/ncstart/boot.js
+++ b/apps/ncstart/boot.js
@@ -1,11 +1,11 @@
 (function() {
-  let s = require('Storage').readJSON('ncstart.settings.json', 1)
+  let s = require('Storage').readJSON('ncstart.json', 1)
     || require('Storage').readJSON('setting.json', 1)
     || {welcomed: true} // do NOT run if global settings are also absent
   if (!s.welcomed && require('Storage').read('ncstart.app.js')) {
     setTimeout(() => {
       s.welcomed = true
-      require('Storage').write('ncstart.settings.json', s)
+      require('Storage').write('ncstart.json', s)
       load('ncstart.app.js')
     })
   }
diff --git a/apps/ncstart/settings-default.json b/apps/ncstart/settings-default.json
deleted file mode 100644
index d250efff5..000000000
--- a/apps/ncstart/settings-default.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "welcomed": false
-}
diff --git a/apps/ncstart/settings.js b/apps/ncstart/settings.js
index 2b24095cf..560fad8ba 100644
--- a/apps/ncstart/settings.js
+++ b/apps/ncstart/settings.js
@@ -1,13 +1,12 @@
-// The welcome app is special, and gets to use global settings
 (function(back) {
-  let settings = require('Storage').readJSON('ncstart.settings.json', 1)
+  let settings = require('Storage').readJSON('ncstart.json', 1)
     || require('Storage').readJSON('setting.json', 1) || {}
   E.showMenu({
     '': { 'title': 'NCEU Startup' },
     'Run on Next Boot': {
       value: !settings.welcomed,
       format: v => v ? 'OK' : 'No',
-      onchange: v => require('Storage').write('ncstart.settings.json', {welcomed: !v}),
+      onchange: v => require('Storage').write('ncstart.json', {welcomed: !v}),
     },
     'Run Now': () => load('ncstart.app.js'),
     '< Back': back,
diff --git a/apps/numerals/ChangeLog b/apps/numerals/ChangeLog
index ec465a83f..927c4ff5f 100644
--- a/apps/numerals/ChangeLog
+++ b/apps/numerals/ChangeLog
@@ -1,3 +1,4 @@
 0.01: New App!
 0.02: Use BTN2 for settings menu like other clocks
-0.03: maximize numerals, make menu button configurable, change icon to mac palette, add default settings file, respect 12hour setting
\ No newline at end of file
+0.03: maximize numerals, make menu button configurable, change icon to mac palette, add default settings file, respect 12hour setting
+0.04: Don't overwrite existing settings on app update
diff --git a/apps/numerals/numerals-default.json b/apps/numerals/numerals-default.json
deleted file mode 100644
index aa6a25047..000000000
--- a/apps/numerals/numerals-default.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  color:0,
-  drawMode:"fill",
-  menuButton:22
-}
\ No newline at end of file
diff --git a/apps/setting/ChangeLog b/apps/setting/ChangeLog
index 81ac1fa81..9263b3b13 100644
--- a/apps/setting/ChangeLog
+++ b/apps/setting/ChangeLog
@@ -19,3 +19,4 @@
 0.15: Reduce memory usage when running default clock chooser (#294)
 0.16: Reduce memory usage further when running app settings page
 0.17: Remove need for "settings" in appid.info
+0.18: Don't overwrite existing settings on app update
diff --git a/apps/setting/settings-default.json b/apps/setting/settings-default.json
deleted file mode 100644
index c61fd6109..000000000
--- a/apps/setting/settings-default.json
+++ /dev/null
@@ -1,25 +0,0 @@
-{
-  ble: true,             // Bluetooth enabled by default
-  blerepl: true,         // Is REPL on Bluetooth - can Espruino IDE be used?
-  log: false,            // Do log messages appear on screen?
-  timeout: 10,           // Default LCD timeout in seconds
-  vibrate: true,         // Vibration enabled by default. App must support
-  beep: "vib",           // Beep enabled by default. App must support
-  timezone: 0,           // Set the timezone for the device
-  HID : false,           // BLE HID mode, off by default
-  clock: null,           // a string for the default clock's name
-  "12hour" : false,      // 12 or 24 hour clock?
-  // welcomed : undefined/true (whether welcome app should show)
-  brightness: 1,       // LCD brightness from 0 to 1
-  options: {
-    wakeOnBTN1: true,
-    wakeOnBTN2: true,
-    wakeOnBTN3: true,
-    wakeOnFaceUp: false,
-    wakeOnTouch: false,
-    wakeOnTwist: true,
-    twistThreshold: 819.2,
-    twistMaxY: -800,
-    twistTimeout: 1000
-  }
-}
diff --git a/apps/welcome/ChangeLog b/apps/welcome/ChangeLog
index b8786af6a..a377fc81e 100644
--- a/apps/welcome/ChangeLog
+++ b/apps/welcome/ChangeLog
@@ -7,3 +7,4 @@
 0.07: Run again when updated
       Don't run again when settings app is updated (or absent)
       Add "Run Now" option to settings
+0.08: Don't overwrite existing settings on app update
diff --git a/apps/welcome/boot.js b/apps/welcome/boot.js
index bc5afcc66..f6ba6d2d6 100644
--- a/apps/welcome/boot.js
+++ b/apps/welcome/boot.js
@@ -1,11 +1,11 @@
 (function() {
-  let s = require('Storage').readJSON('welcome.settings.json', 1)
+  let s = require('Storage').readJSON('welcome.json', 1)
     || require('Storage').readJSON('setting.json', 1)
     || {welcomed: true} // do NOT run if global settings are also absent
   if (!s.welcomed && require('Storage').read('welcome.app.js')) {
     setTimeout(() => {
       s.welcomed = true
-      require('Storage').write('welcome.settings.json', {welcomed: "yes"})
+      require('Storage').write('welcome.json', {welcomed: "yes"})
       load('welcome.app.js')
     })
   }
diff --git a/apps/welcome/settings-default.json b/apps/welcome/settings-default.json
deleted file mode 100644
index d250efff5..000000000
--- a/apps/welcome/settings-default.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "welcomed": false
-}
diff --git a/apps/welcome/settings.js b/apps/welcome/settings.js
index b11921646..20c2e9b13 100644
--- a/apps/welcome/settings.js
+++ b/apps/welcome/settings.js
@@ -1,13 +1,12 @@
-// The welcome app is special, and gets to use global settings
 (function(back) {
-  let settings = require('Storage').readJSON('welcome.settings.json', 1)
+  let settings = require('Storage').readJSON('welcome.json', 1)
     || require('Storage').readJSON('setting.json', 1) || {}
   E.showMenu({
     '': { 'title': 'Welcome App' },
     'Run on Next Boot': {
       value: !settings.welcomed,
       format: v => v ? 'OK' : 'No',
-      onchange: v => require('Storage').write('welcome.settings.json', {welcomed: !v}),
+      onchange: v => require('Storage').write('welcome.json', {welcomed: !v}),
     },
     'Run Now': () => load('welcome.app.js'),
     '< Back': back,
diff --git a/apps/widbatpc/ChangeLog b/apps/widbatpc/ChangeLog
index 4c5f16a04..a8851b1d8 100644
--- a/apps/widbatpc/ChangeLog
+++ b/apps/widbatpc/ChangeLog
@@ -7,3 +7,4 @@
 0.08: Draw percentage as inverted on monochrome battery
 0.09: Fix regression stopping correct widget updates
 0.10: Add 'hide if charge greater than'
+0.11: Don't overwrite existing settings on app update
diff --git a/apps/widbatpc/settings.js b/apps/widbatpc/settings.js
index bfed48f09..f38bb3a08 100644
--- a/apps/widbatpc/settings.js
+++ b/apps/widbatpc/settings.js
@@ -3,7 +3,7 @@
  * @param {function} back Use back() to return to settings menu
  */
 (function(back) {
-  const SETTINGS_FILE = 'widbatpc.settings.json'
+  const SETTINGS_FILE = 'widbatpc.json'
   const COLORS = ['By Level', 'Green', 'Monochrome']
 
   // initialize with default settings...
diff --git a/apps/widbatpc/widget.js b/apps/widbatpc/widget.js
index fe6f8550c..3fa4cb79a 100644
--- a/apps/widbatpc/widget.js
+++ b/apps/widbatpc/widget.js
@@ -6,7 +6,7 @@ const COLORS = {
   'ok': 0xFD20, // "Orange"
   'low':0xF800, // "Red"
 }
-const SETTINGS_FILE = 'widbatpc.settings.json'
+const SETTINGS_FILE = 'widbatpc.json'
 
 let settings
 function loadSettings() {