Skip to main content
Sinister DM Tools

The Ultimate Dungeon Master's Digital Toolkit

Only the DM pays. Players always join free.

Everything You Need to Run Epic Tabletop RPG Sessions

πŸ—ΊοΈ

Interactive Virtual Tabletop

Upload maps with configurable grids, place and drag tokens for PCs and NPCs, and share the live tabletop with players in real time. Full canvas-based VTT built right in.

βš”οΈ

Advanced Initiative Tracker

Complete combat management with HP and temporary HP tracking, AC display, tiebreaker rolls, and multi-effect tracking per character with tactical notes.

🏰

Smart Location System

Organize buildings and rooms with exploration status, threat levels, and assignable NPCs. Cascading dropdowns keep large campaigns manageable.

πŸ‘Ή

Global NPC & Monster Library

Create monsters and NPCs once, reuse them across all your campaigns. Full stat blocks, images, voice recordings, and room encounter assignments.

πŸ§™

Player Character Management

Track PC status, HP, deaths, and replacements. Players manage their own characters in real time during live sessions.

🎲

Live Multiplayer Sessions

Share a session code and your players join instantly. Separate DM and player views with real-time sync for initiative, maps, and tokens. Players always free.

🎀

NPC Voice Recordings

Record and play back NPC voices directly in the app. Bring your characters to life with voice acting stored in the cloud.

☁️

Cloud Storage & Sync

Maps, images, voice files, and campaign data all synced to the cloud. Access your campaigns from any device, anywhere.

πŸ“±

Works on Any Device

Fully responsive design with touch support. Run sessions from your laptop, tablet, or phone β€” DMs and players alike.

Choose Your Plan

Every plan starts with a free 7-day trial. No credit card required.

Monthly

$ 2 /month
  • βœ“ 7-day free trial
  • βœ“ Unlimited campaigns
  • βœ“ Full virtual tabletop
  • βœ“ All DM tools included
  • βœ“ Cloud storage & sync
  • βœ“ Players join free

Ready to Level Up Your Sessions?

Try everything free for 7 days. Only $2/month after that β€” and your players never pay a cent.

Sinister DM Tools

Select or Create a Campaign

Create New Campaign:
Sinister DM Tools

Campaign

πŸͺ– Initiative Tracker

Round: 1
Use Next Turn to advance through combat. When it cycles back to the top, the round will advance automatically.
⚑ Apply Effect to Multiple:
Effect Name: Duration:
βš”οΈ Bulk Damage/Healing:
Select combatants using checkboxes, enter damage/healing amount, then click apply.
SelectNameClassInitHPACEffect 1 (Name / Rounds)Effect 2 (Name / Rounds)Effect 3 (Name / Rounds)Effect 4 (Name / Rounds)Notes

βš”οΈ Quick Combat Setup

Automatically load map, roll initiative, and position tokens for a room

πŸ’‘ NPCs will have initiative rolled automatically. PCs start with init=0 - update their initiative manually after players roll.


Manual Add to Initiative:
Qty:

🏚️ Location Tracker

Add New Building/Location:
Building Name:

πŸ‘Ή NPCs & Monsters

Add NPC/Monster:

πŸ“œ Session Notes

πŸ§™ Player Characters

Add Player Character:

πŸ—ΊοΈ Virtual Tabletop Maps

Upload New Map:
Recommended: PNG or JPG, up to 10MB

πŸ“‹ Campaign Maps

πŸ—ΊοΈ Select a map from above to load the virtual tabletop