Cassandra - Telegram Mini App




About the project and task
Cassandra is a closed application and Telegram Mini App that works with prediction markets (Polymarket, Preddy, Kalshi). The platform analyzes markets, monitors smart whites, issues signals and Copy Trade.
The task was to design a technological UI/UX in a dark aesthetic with blue and purple accents: to package analytics in a simple view, from the alert feed (Position, Volume, ROI) to filters and risk settings.
A system of screens has been developed: signal feed with quick purchase (Copy Trade), filters by category (Politics, Crypto, Sport) and risk (Low, Medium, High), personal account with push notifications and FAQ.
- +287%
- Average Wallet ROI based on system signals
- 84%
- Alert triggering accuracy (Win Rate)
- < 0.5 sec
- Delay in signal transmission from Polymarket/Kalshi to push notification


