Update readme

Author: Tackx

README.md

@@ -1,20 +1,48 @@
 # Todolator
 
+Todolator is a simple desktop task reminder designed to ensure it is hard to ignore the reminder (unlike other apps using push or in-brwoser notifications).
+
+## Why
+
+I created Todolator because usual push notifications or in-browser notifications from apps like Google Calendar are not enough to grab my attention and not forget the task at hand. I also had experience with desktop apps like [Kana](https://kanasolution.com/products/kana-reminder/) and [Desktop Reminder](https://www.desktop-reminder.com/en/index.html), however these are now quite outdated and/or not completely free.
+
+I also wanted to create a desktop app, learn the basics of Rust and use Tauri - so I can combined all of these in this project.
+
+## Use Cases
+
+- Reminding of important, one-time tasks
+  - E.g. an important meeting
+- Reminding of recurring tasks
+  - E.g. paying your bills
+- Combination of the 2 UCs above
+
+## Privacy
+
+Your data stays on your computer, you decide what to do with it. Todolator uses no telemetry, stores no data about you and does not require internet connection.
+
 ## Configuration
 
-Your tasks and settings' location will depend on your OS:
+### App Data Directory
+
+The app data directory location depends on the OS used:
+
+**Windows:**
+
+- `C:\Users\<Username>\AppData\Roaming\Todolator`
+
+**Linux:**
 
-**Windows**
+- `/home/<username>/.local/share/Todolator`
 
-- ``
+**MacOS:**
 
-**Linux**
+- `/Users/<Username>/Library/Application Support/Todolator`
 
-- ``
+In the location, you can find `tasks.json` holding your tasks, `settings.json` containing app settings and `resources/alarm.mp3` containing the alarm notification sound.
 
-**MacOS**
+### Changing the notification sound
 
-- ``
+Simply replace the default `alarm.mp3` file in the `resources` directory located inside of the app data directory (see above).
 
 ## Run Locally
 
@@ -33,6 +61,7 @@ The built binary & installers will be created in `src-tauri/target/release`.
 
 ## TODO
 
+- LICENCE
 - Try building for MacOS via GHA pipeline provided by tauri
 - Mention in readme the location of `tasks.json`, `settings.json` and `alarm.mp3`
 - Calendar units for recurrence
@@ -42,7 +71,7 @@ The built binary & installers will be created in `src-tauri/target/release`.
 
 - MacOS release
   - Fix title bar (<https://v2.tauri.app/learn/window-customization/#creating-a-custom-titlebar>)
-- Clean up the app data folder when uninstalling (maybe make it optional with a checkbox?)
+- Clean up the app data directory when uninstalling (maybe make it optional with a checkbox?)
 - Import/Export tasks
 - Filtering & Sorting tasks
 - Configurable hotkeys