"La Perseguidora Criptográfica" aka The Crypto Chaser is a 1-weekend app I recently developed which integrates with crypto exchange APIs (currently Binance and Kucoin) and provides a global view of asset price changes.

It has alerts and sorting options which work out-of-the-box but can be tweaked.

Focus On - track your trades and alert on movements.

Auto Profit - Use secure API endpoints to execute LIMIT or STOP MARKET orders to take profits without having to baby-sit the asset prices.

It's intended for personal use but could be easily published since it uses public API endpoints only.