Example: if a coin grows 5% in 10 minutes there's a very high probability that it will grow another 5% in the next 30 minutes. (just an example out of my head, nothing to do with reality)
It will be the best tool for losing your money. Not all coins that have gained 5% to 10% will continue to grow, and if you do, it will be for a short period not exceeding 10 Min.
The only profit can be achieved if you trade using bots with good speeds, but manual trading works with long trading periods.
there are many apps that track cryptos some of them need download and others use email.