Easy and free notification from "Coinwink" when you want to follow the crypto currency rate

I use it and will notify me of the crypto currency I would like to follow. I put it into how high and how low the rate should be to alert me.

It is also possible to receive alerts via SMS

Here's what it says about TIPS & TRICKS from Coinwink's website

 For specific coin
You can use (and bookmark) a custom url address to pre-select your coin, e.g. https://coinwink.com/eth (put a coin symbol after the slash).  

 Coinwink on mobile
You can place Coinwink app icon on your mobile device desktop. To do this, open coinwink.com in your mobile browser, click settings and then Add to Home Screen.  

 Account is not necessary
To create email alert you don't need an account or to click on a confirmation link. Your alert will be created instantly. You will receive a unique ID to your email. You can use this ID to manage your alerts.
Account is necessary only if you want to use SMS alerts. With the account you can also use email alerts, similar as before. With the account it is also more comfortable to use email alerts. 

 Privacy-focused
When using Coinwink without the account, with the last deleted alert, your unique ID and email associated with it will also be deleted from the database. After this, when you create a new alert, you will receive a new ID.

 SMS phone number format
Please enter your phone number in E.164 international format. The number should start with the plus sign, e.g. +14155552671 

 SMS settings configuration
Coinwink is not charging anything for SMS service, but you need to provide your own SMS API details. To get these, you need to sign up for Plivo or Nexmo service. The sign up is free and they provide 2$ SMS credit.  

 For both Plivo and Nexmo, you will find your API details on the first page after you login to your Plivo or Nexmo account.

 Coinwink's website