Dota Guide Timer is a free, browser-based assistant that gives you real-time audio and visual cues for Dota 2’s most important timings—Roshan respawn, Aegis expiry, power runes, jungle stacks, pulls, day/night transitions, and more. No installs, no overlays, no game file access. Just open the web app on a second screen (monitor, tablet, or phone), hit Start at the horn, and play with pro-level awareness.