Trendline alerts (no 3rd party)

Can I please have the ability to put alerts on my trendlines.

Using android phone (Samsung) and windows desktop.

I've tried with Clickalgo and it's rubbish.

So clunky, I now refuse to use it. Email set up was horrible. 

Drove me crazy.

I just want an alert similar to your own price alert that's in your own app.

That one works great.

Thank you for reading my note.

Appreciate your on going work.

Enjoy your day.

Dalek