How can I get notified when crypto currency is flogtwekting sometimes it doesn't steady. How can one be notified
Given the fact that the cryptocurrency market is probably the most unstable one in terms of the fluctuations of supply and demand, you will have a hard time trying to catch every single change in the price. It is always better to focus your attention on the long-term perspectives of a particular cryptocurrency instead of following its small movements. From my own experience, too frequent notifications about price changes will only harm you while not helping to make the right trading decision. It was just free advice you hadn't asked for.
As for your question, I would recommend you to take a look at
Bitcoin Checker - Your Alarms. It is one of the greatest mobile applications I have ever seen. It is partially open-source. It contains no ads. It is very simple to set up and use. I love it.
Bitcoin Checker is a FREE app to track the most recent prices of your favourite currency pairs (on over 100 supported exchanges) in many customizable ways (such as rich notifications, Text-To-Speech voice announcements, Home and Lockscreen widget or multiple alarms).
Data module (containing exchanges and currency pairs) is Open Source and availabale on GitHub:
https://github.com/aneonex/BitcoinChecker/