Banknote Alert
![Money](https://mydailyideas.com/wp-content/uploads/2016/06/money-250x250.png)
Why?
If you travel to many places, you probably have many currencies put aside for your next trip. It would be good to get an alert when a particular banknote is being retired.
How?
A service where you can choose which currencies to watch and receive alerts when there is a banknote being retired, so you can take measures.
Icons made by Freepik