diff --git a/apps/banglerun/README.md b/apps/banglerun/README.md
index 80e984bfa..99fbaaf1a 100644
--- a/apps/banglerun/README.md
+++ b/apps/banglerun/README.md
@@ -5,21 +5,4 @@ An app for running sessions. Displays info and logs your run for later viewing.
 ## Compilation
 
 The app is written in Typescript, and needs to be transpiled in order to be
-run on the BangleJS. The easiest way to perform this step is by using the
-ubiquitous [NPM package manager](https://www.npmjs.com/get-npm).
-
-After having installed NPM for your platform, checkout the `BangleApps` repo,
-open a terminal, and navigate into the `apps/banglerun` folder. Then issue:
-
-```
-npm i
-```
-
-to install the project's build tools, and:
-
-```
-npm run build
-```
-
-To build the app. The last command will generate the `app.js` file, containing
-the transpiled code for the BangleJS.
+run on the BangleJS. See ../../typescript/README.md for instructions.
diff --git a/apps/banglerun/src/activity.ts b/apps/banglerun/activity.ts
similarity index 100%
rename from apps/banglerun/src/activity.ts
rename to apps/banglerun/activity.ts
diff --git a/apps/banglerun/src/app.ts b/apps/banglerun/app.ts
similarity index 100%
rename from apps/banglerun/src/app.ts
rename to apps/banglerun/app.ts
diff --git a/apps/banglerun/src/display.ts b/apps/banglerun/display.ts
similarity index 100%
rename from apps/banglerun/src/display.ts
rename to apps/banglerun/display.ts
diff --git a/apps/banglerun/src/gps.ts b/apps/banglerun/gps.ts
similarity index 100%
rename from apps/banglerun/src/gps.ts
rename to apps/banglerun/gps.ts
diff --git a/apps/banglerun/src/hrm.ts b/apps/banglerun/hrm.ts
similarity index 100%
rename from apps/banglerun/src/hrm.ts
rename to apps/banglerun/hrm.ts
diff --git a/apps/banglerun/src/log.ts b/apps/banglerun/log.ts
similarity index 80%
rename from apps/banglerun/src/log.ts
rename to apps/banglerun/log.ts
index b6714e407..282115e1a 100644
--- a/apps/banglerun/src/log.ts
+++ b/apps/banglerun/log.ts
@@ -1,17 +1,19 @@
-import { AppState } from './state';
+import { AppState, AppStateWithLog } from './state';
 
 declare var require: any;
 
-function initLog(state: AppState): void {
+function initLog(state: AppState): AppStateWithLog {
   const datetime = new Date().toISOString().replace(/[-:]/g, '');
   const date = datetime.substr(2, 6);
   const time = datetime.substr(9, 6);
   const filename = `banglerun_${date}_${time}`;
+  state = <AppStateWithLog> state;
   state.file = require('Storage').open(filename, 'w');
   state.fileWritten = false;
+  return state;
 }
 
-function updateLog(state: AppState): void {
+function updateLog(state: AppStateWithLog): void {
   if (!state.fileWritten) {
     state.file.write([
       'timestamp',
diff --git a/apps/banglerun/package.json b/apps/banglerun/package.json
deleted file mode 100644
index 1f5cc677b..000000000
--- a/apps/banglerun/package.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "name": "banglerun",
-  "version": "0.5.0",
-  "description": "Bangle.js app for running sessions",
-  "main": "app.js",
-  "types": "app.d.ts",
-  "scripts": {
-    "build": "rollup -c",
-    "test": "ts-node -P tsconfig.spec.json node_modules/jasmine/bin/jasmine --config=jasmine.json"
-  },
-  "author": {
-    "name": "Stefano Baldan",
-    "email": "singintime@gmail.com"
-  },
-  "license": "ISC",
-  "devDependencies": {
-    "@rollup/plugin-typescript": "^4.1.1",
-    "@types/jasmine": "^3.5.10",
-    "jasmine": "^3.5.0",
-    "rollup": "^2.10.2",
-    "rollup-plugin-terser": "^5.3.0",
-    "terser": "^4.7.0",
-    "ts-node": "^8.10.2",
-    "tslib": "^2.0.0",
-    "typescript": "^3.9.2"
-  }
-}
diff --git a/apps/banglerun/src/state.ts b/apps/banglerun/state.ts
similarity index 80%
rename from apps/banglerun/src/state.ts
rename to apps/banglerun/state.ts
index 14ef2dc5d..1ba9bca26 100644
--- a/apps/banglerun/src/state.ts
+++ b/apps/banglerun/state.ts
@@ -4,7 +4,7 @@ enum ActivityStatus {
   Running = 'RUN',
 }
 
-interface AppState {
+interface BasicAppState {
   // GPS NMEA data
   fix: number;
   lat: number;
@@ -28,14 +28,12 @@ interface AppState {
   hrError: number,
 
   // Logger data
-  file: File;
   fileWritten: boolean;
 
   // Drawing data
   drawing: boolean;
 
   // Activity data
-  status: ActivityStatus;
   duration: number;
   distance: number;
   speed: number;
@@ -43,6 +41,17 @@ interface AppState {
   cadence: number;
 }
 
+interface AppStateWithoutLog extends BasicAppState {
+  status: 'STOP';
+}
+
+interface AppStateWithLog extends BasicAppState {
+  file: File;
+  status: ActivityStatus;
+}
+
+type AppState = AppStateWithLog | AppStateWithoutLog;
+
 interface File {
   read: Function;
   write: Function;
@@ -68,7 +77,6 @@ function initState(): AppState {
     hr: 60,
     hrError: 100,
 
-    file: null,
     fileWritten: false,
 
     drawing: false,
@@ -82,4 +90,4 @@ function initState(): AppState {
   }
 }
 
-export { ActivityStatus, AppState, File, initState };
+export { ActivityStatus, AppState, AppStateWithLog, File, initState };
diff --git a/apps/banglerun/src/step.ts b/apps/banglerun/step.ts
similarity index 100%
rename from apps/banglerun/src/step.ts
rename to apps/banglerun/step.ts
diff --git a/apps/banglerun/tsconfig.json b/apps/banglerun/tsconfig.json
deleted file mode 100644
index a341a5a5e..000000000
--- a/apps/banglerun/tsconfig.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "compilerOptions": {
-    "module": "es2015",
-    "noImplicitAny": true,
-    "target": "es2015"
-  },
-  "include": [
-    "src"
-  ]
-}
diff --git a/apps/banglerun/tsconfig.spec.json b/apps/banglerun/tsconfig.spec.json
deleted file mode 100644
index 136ae137b..000000000
--- a/apps/banglerun/tsconfig.spec.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "compilerOptions": {
-    "module": "commonjs",
-    "noImplicitAny": true,
-    "target": "es2015"
-  },
-  "include": [
-    "test"
-  ]
-}
diff --git a/typescript/tsconfig.json b/typescript/tsconfig.json
index 40537c680..e9327be68 100644
--- a/typescript/tsconfig.json
+++ b/typescript/tsconfig.json
@@ -14,6 +14,6 @@
     "strict": true
   },
   "include": ["../apps/**/*", "./**/*"],
-  // these apps have been excluded because they were built before this configuration was created and are using their own
-  "exclude": ["../apps/banglerun", "../apps/hebrew_calendar"]
+  // this app is excluded because it was built before this configuration was created and is using its own
+  "exclude": ["../apps/hebrew_calendar"]
 }