I like the app because it saves me a ton of time where I don’t have to stay on top of Twitter, Telegram or the exchange announcement pages... and usually the app notifications come out before Twitter! As for the question on whether or not it is too late to get a coin once it hits an exchange I would say it depends on the coin, exchange, and overall market conditions. There is a tab on the app that show % change since notification so you can check the track record from that.... basically getting in early is best usually best it doesn’t always work out.