added Subscription App Idea

Projects/3-Advanced/Subscription-Tracker.md

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+# Subscription Tracker App
+
+**Tier:** 3-Advanced
+
+A app that tracks all your subscriptions and notify user when any subscription is about to expire. All kind of subscriptions can be monitored (netflix, prime, ...other) at single place.
+
+You can create this app using React Native / Flutter or native approach. Firebase is most recommended DB, although you can use any.
+
+Express server can be used to send scheduled notifications or AWS lambda can also be considered.
+
+## User Stories
+
+- [ ] User can register for an account storing their name, email/username and password then login to the app using their credentials
+- [ ] User can add new subscription they bought, its date and duration
+- [ ] User has a profile that displays all the account information
+- [ ] User can view all the subscriptions on the home page
+- [ ] User can sort subscriptions based on date, time to expire
+
+## Bonus features
+
+- [ ] User has a settings tab where they can change theme, change notification ringtone
+- [ ] User gets a notification a day before subscription is about to expire
+
+## Useful links and resources
+
+- [How to make an Instagram clone](https://www.youtube.com/watch?v=9dRSNQe7PWw)
+- [Node & Mongo Basic CRUD Operations](https://codeburst.io/writing-a-crud-app-with-node-js-and-mongodb-e0827cbbdafb)
+- [React Native](https://reactnative.dev/docs/getting-started)
+- [Expo](https://docs.expo.dev/)
+- [Firebase](https://firebase.google.com/docs)
+- [Express js](https://expressjs.com/)
+- [AWS Lambda](https://docs.aws.amazon.com/lambda/index.html)
+
+## Example projects
+
+- [Subscriptions - Manage your regular expenses](https://play.google.com/store/apps/details?id=de.simolation.subscriptionmanager&hl=en&gl=US)

README.md

@@ -85,11 +85,11 @@ required to complete them.
 | --------------------------------------------------------------------------------- | -------------------------------------------------- | -------------- |
 | [Bit Masks](./Projects/2-Intermediate/Bit-Masks-App.md)                           | Using Bit Masks for Conditions                     | 2-Intermediate |
 | [Book Finder App](./Projects/2-Intermediate/Book-Finder-App.md)                   | Search for books by multiple criteria              | 2-Intermediate |
-| [Calculator CLI](./Projects/2-Intermediate/Calculator-CLI.md)                   | Create a basic calculator cli.             | 2-Intermediate |
+| [Calculator CLI](./Projects/2-Intermediate/Calculator-CLI.md)                     | Create a basic calculator cli.                     | 2-Intermediate |
 | [Card Memory Game](./Projects/2-Intermediate/Card-Memory-Game.md)                 | Memorize and match hidden images                   | 2-Intermediate |
 | [Charity Finder App](./Projects/2-Intermediate/Charity-Finder-App.md)             | Find a Global Charity to donate to                 | 2-Intermediate |
 | [Chrome Theme Extension](./Projects/2-Intermediate/Chrome-Theme-Extension.md)     | Build your own chrome theme extention.             | 2-Intermediate |
-| [Currency Converter](./Projects/2-Intermediate/Currency-Converter.md)             | Convert one currency to another.                  | 2-Intermediate |
+| [Currency Converter](./Projects/2-Intermediate/Currency-Converter.md)             | Convert one currency to another.                   | 2-Intermediate |
 | [Drawing App](./Projects/2-Intermediate/Drawing-App.md)                           | Create digital artwork on the web                  | 2-Intermediate |
 | [Emoji Translator App](./Projects/2-Intermediate/Emoji-Translator-App.md)         | Translate sentences into Emoji                     | 2-Intermediate |
 | [Flashcards App](./Projects/2-Intermediate/FlashCards-App.md)                     | Review and test your knowledge through Flash Cards | 2-Intermediate |