SQL through 15-minute daily sessions without a laptop. Complete interactive exercises with real-world datasets. Receive instant feedback and track progress. Build skills from beginner to job-ready.
Monitor network traffic in real time with packet analysis and capture features. Manage multiple connections with protocol support including ss, ssr, vmess, trojan, vless, HTTP/S, SOCKS5, hysteria2, Shadow-TLS, and WireGuard.
Securely connect to high-speed servers with one-tap access. Use military-grade encryption for privacy. Access data and bandwidth without registration. No logs are stored. Protect internet connections on public Wi-Fi.
Measure network performance by testing TCP and UDP speeds in and modes. Conduct bidirectional and reverse tests across Wi-Fi, cellular, or LAN. Validate ISP or VPN changes and identify bandwidth bottlenecks.
Encrypt internet traffic to protect privacy. Connect to global servers for secure browsing. Block ads and track locations. Manage connections and set auto-reconnect options. Switch between servers for optimal speed and anonymity.
The app provides developer news, features, and videos. Users can keep up to date on Apple frameworks and technologies, browse developer stories, and watch past event videos offline.