Bitalert an application informing the user about declines in cryptocurrencies

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Job category:
Mobile applications
Expected budget:

Negotiable

Published:
Valid until:

Job description

An application based on informing the user about the price of the cryptocurrency that he set in the notification: I set that when bitcoin reaches PLN 140k, a notification will come to me. This is a diagram of the alarm clock cryptocurrency prices are downloaded on a regular basis from the google rate. this is a very simple application my question is as follows - how much would it cost? regards.

Required functions:

as above

Operating system:

ios, android