The Crypto Alert app sends and receives data with Binance API only.
The data coming from Binance API is public data only.
The data going to Binance API is the choice of spot/future and the selected symbol.
Some data is stored encrypted on the mobile device as preferences. These are the spot/future choices, the selected symbol, the selected alert types and the thresholds. No data is sent to the developer of Crypto Alert.
Crypto Alert is financed through donation and commissions on Binance registrations.