diff --git a/README.md b/README.md
index 665a74da2..bf82a0c41 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,8 @@ easily distinguish between file types, we use the following:
 }
 ```
 
+See `app.json /  widget.json` below for more info on the correct format.
+
 * Create an entry in `apps.json` as follows:
 
 ```
@@ -155,8 +157,32 @@ The widget example is available in [`apps/_example_widget`](apps/_example_widget
 * `widget.json` - short widget name and storage names
 * `widget.js` - widget code
 
+### `app.json` / `widget.json` format
 
-#### `apps.json` format
+This is the file that's loaded onto Bangle.js, which gives information
+about the app.
+
+```
+{
+  "name":"Short Name", // for Bangle.js menu
+  "icon":"*7chname", // for Bangle.js menu
+  "src":"-7chname", // source file
+  "type":"widget/clock/app", // optional, default "app"
+     // if this is 'widget' then it's not displayed in the menu
+     // if it's 'clock' then it'll be loaded by default at boot time
+  "hasWidgets" : true        // optional, default false
+     // if true, widgets will be loaded so 'drawWidgets' can be
+     // used from the app. You just need to ensure you leave the
+     // top and bottom 24px alone
+  "version":"1.23",
+     // added by BangleApps loader on upload based on apps.json
+  "files:"file1,file2,file3",
+     // added by BangleApps loader on upload - lists all files
+     // that belong to the app so it can be deleted
+}
+```
+
+### `apps.json` format
 
 ```
 { "id": "appid",              // 7 character app id
diff --git a/appinfo.js b/appinfo.js
index 6fa4aa474..7d49647fe 100644
--- a/appinfo.js
+++ b/appinfo.js
@@ -31,6 +31,7 @@ var AppInfo = {
             } catch (e) {
               reject(storageFile.name+" is not valid JSON");
             }
+            if (app.version) json.version = app.version;
             json.files = fileContents.map(storageFile=>storageFile.name).join(",");
             storageFile.content = JSON.stringify(json);
           }
diff --git a/comms.js b/comms.js
index 9d103c246..3a9c37296 100644
--- a/comms.js
+++ b/comms.js
@@ -5,6 +5,15 @@ var Comms = {
 uploadApp : app => {
   return AppInfo.getFiles(app, httpGet).then(fileContents => {
     return new Promise((resolve,reject) => {
+      var appJSONFile = fileContents.find(f=>f.name=="+"+app.id);
+      var appJSON = undefined;
+      if (appJSONFile)
+        try {
+          appJSON=JSON.parse(appJSONFile.content);
+          appJSON.id = app.id;
+        } catch(e) {
+          console.log("Error decoding app JSON for",app.id,e);
+        }
       fileContents = fileContents.map(storageFile=>storageFile.cmd).join("\n")+"\n";
       console.log("uploadApp",fileContents);
       // reset to ensure we have enough memory to upload what we need to
@@ -13,7 +22,7 @@ uploadApp : app => {
         setTimeout(() => { // wait for reset
           Puck.write("\x10E.showMessage('Uploading...')\n"+fileContents+"\x10E.showMessage('Hold BTN3\\nto reload')\n",(result) => {
             if (result===null) return reject("");
-            resolve();
+            resolve(appJSON);
           });
         },500);
       });
@@ -24,7 +33,7 @@ getInstalledApps : () => {
   return new Promise((resolve,reject) => {
     Puck.write("\x03",(result) => {
       if (result===null) return reject("");
-      Puck.eval('require("Storage").list().filter(f=>f[0]=="+").map(f=>f.substr(1))', (appList,err) => {
+      Puck.eval('require("Storage").list().filter(f=>f[0]=="+").map(f=>{var j=require("Storage").readJSON(f)||{};j.id=f.substr(1);return j})', (appList,err) => {
         if (appList===null) return reject(err || "");
         console.log("getInstalledApps", appList);
         resolve(appList);
diff --git a/index.js b/index.js
index e3faa4ecb..c10f07f54 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,5 @@
 var appJSON = []; // List of apps and info from apps.json
-var appsInstalled = []; // list of app IDs
+var appsInstalled = []; // list of app JSON
 
 httpGet("apps.json").then(apps=>{
   try {
@@ -149,11 +149,15 @@ function refreshLibrary() {
 
   panelbody.innerHTML = visibleApps.map((app,idx) => {
     var icon = "icon-upload";
+    var versionInfo = app.version || "";
     if (app.custom)
       icon = "icon-menu";
-    if (appsInstalled.includes(app.id))
+    if (appsInstalled.find(a=>a.id==app.id)) {
       icon = "icon-delete";
+      versionInfo+=" installed";
+    }
     var buttons = "";
+    if (versionInfo) versionInfo = " <small>("+versionInfo+")</small>";
     if (app.allow_emulator)
       buttons += `<button class="btn btn-link btn-action btn-lg" title="Try in Emulator"><i class="icon icon-share" appid="${app.id}"></i></button>`;
     buttons += `<button class="btn btn-link btn-action btn-lg"><i class="icon ${icon}" appid="${app.id}"></i></button>`;
@@ -162,7 +166,7 @@ function refreshLibrary() {
       <figure class="avatar"><img src="apps/${app.icon?`${app.id}/${app.icon}`:"unknown.png"}" alt="${escapeHtml(app.name)}"></figure>
     </div>
     <div class="tile-content">
-      <p class="tile-title text-bold">${escapeHtml(app.name)}</p>
+      <p class="tile-title text-bold">${escapeHtml(app.name)} ${versionInfo}</p>
       <p class="tile-subtitle">${escapeHtml(app.description)}</p>
     </div>
     <div class="tile-action">
@@ -193,8 +197,8 @@ function refreshLibrary() {
       } else if (icon.classList.contains("icon-upload")) {
         icon.classList.remove("icon-upload");
         icon.classList.add("loading");
-        Comms.uploadApp(app).then(() => {
-          appsInstalled.push(app.id);
+        Comms.uploadApp(app).then((appJSON) => {
+          if (appJSON) appsInstalled.push(appJSON);
           showToast(app.name+" Uploaded!", "success");
           icon.classList.remove("loading");
           icon.classList.add("icon-delete");
@@ -208,8 +212,8 @@ function refreshLibrary() {
         if (app.custom) {
           icon.classList.remove("icon-menu");
           icon.classList.add("loading");
-          handleCustomApp(app).then(() => {
-            appsInstalled.push(app.id);
+          handleCustomApp(app).then((appJSON) => {
+            if (appJSON) appsInstalled.push(appJSON);
             showToast(app.name+" Uploaded!", "success");
             icon.classList.remove("loading");
             icon.classList.add("icon-delete");
@@ -235,7 +239,7 @@ refreshLibrary();
 function removeApp(app) {
   return showPrompt("Delete","Really remove '"+app.name+"'?").then(() => {
     Comms.removeApp(app).then(()=>{
-      appsInstalled = appsInstalled.filter(id=>id!=app.id);
+      appsInstalled = appsInstalled.filter(a=>a.id!=app.id);
       showToast(app.name+" removed successfully","success");
       refreshMyApps();
       refreshLibrary();
@@ -274,19 +278,30 @@ function refreshMyApps() {
   var panelbody = document.querySelector("#myappscontainer .panel-body");
   var tab = document.querySelector("#tab-myappscontainer a");
   tab.setAttribute("data-badge", appsInstalled.length);
-  panelbody.innerHTML = appsInstalled.map(appNameToApp).sort(appSorter).map(app => `<div class="tile column col-6 col-sm-12 col-xs-12">
+  panelbody.innerHTML = appsInstalled.map(appJSON => {
+var app = appNameToApp(appJSON.id);
+var version = "";
+if (!appJSON.version) {
+  version = "Unknown version";
+  if (app.version) version += ", latest "+app.version;
+} else {
+  version = appJSON.version;
+  if (app.version == appJSON.version) version += ", up to date";
+  else if (app.version) version += ", latest "+app.version;
+}
+return `<div class="tile column col-6 col-sm-12 col-xs-12">
     <div class="tile-icon">
       <figure class="avatar"><img src="apps/${app.icon?`${app.id}/${app.icon}`:"unknown.png"}" alt="${escapeHtml(app.name)}"></figure>
     </div>
     <div class="tile-content">
-      <p class="tile-title text-bold">${escapeHtml(app.name)}</p>
+      <p class="tile-title text-bold">${escapeHtml(app.name)} <small>(${version})</small></p>
       <p class="tile-subtitle">${escapeHtml(app.description)}</p>
     </div>
     <div class="tile-action">
       <button class="btn btn-link btn-action btn-lg"><i class="icon icon-delete" appid="${app.id}"></i></button>
     </div>
   </div>
-  `).join("");
+  `}).join("");
   htmlToArray(panelbody.getElementsByTagName("button")).forEach(button => {
     button.addEventListener("click",event => {
       var icon = event.target;
@@ -300,8 +315,8 @@ function refreshMyApps() {
 function getInstalledApps() {
   showLoadingIndicator();
   // Get apps
-  return Comms.getInstalledApps().then(appIDs => {
-    appsInstalled = appIDs;
+  return Comms.getInstalledApps().then(appJSON => {
+    appsInstalled = appJSON;
     handleConnectionChange(true);
     refreshMyApps();
     refreshLibrary();