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Sinister DM Tools

A minimalist DM toolkit β€” easy to learn, easy to set up.

Only the DM pays. Players always join free.

The tools DMs actually use β€” without the setup overhead

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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.

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Initiative Tracker

Track HP, temp HP, AC, and effects per character. Tiebreaker rolls, tactical notes, and clear turn order β€” everything in one place during combat.

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Location & Room Tracker

Organize buildings and rooms with exploration status, threat levels, and assigned NPCs. Designed to stay out of your way during a live session.

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NPC & Monster Library

Create an NPC or monster once, reuse it across all your campaigns. Stat blocks, images, voice recordings, and room assignments β€” all in one card.

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Player Character Management

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

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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.

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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.

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Cloud Storage & Sync

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

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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 60-day trial. No credit card required.

Monthly

$ 2 /month
  • βœ“ 60-day free trial
  • βœ“ Unlimited campaigns
  • βœ“ Full virtual tabletop
  • βœ“ All DM tools included
  • βœ“ Cloud storage & sync
  • βœ“ Players join free

Run your next session without the setup headache.

Try Sinister free for 60 days β€” no credit card needed. Only $2.50/month after, and your players always join free.

Sinister DM Tools

Select or Create a Campaign

Create New Campaign:
Sinister DM Tools

Campaign

format_list_numbered Initiative Tracker

Round: 1
Use Next Turn to advance through combat. When it cycles back to the top, the round will advance automatically.
flash_on Apply Effect to Multiple:
Effect Name: Duration:
swords 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

swords Quick Combat Setup

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

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


Manual Add to Initiative:
Qty:

home Location Tracker

Add New Building/Location:
Building Name:

people NPCs & Monsters

Add NPC/Monster:

sticky_note_2 Session Notes

Campaign Sessions

Session Analytics

Category Metric Value
Loading analytics…

Campaign Progress Over Time

No session timeline data yet.

Attendance metrics are not tracked yet. Add attendance tracking to enable per-session player attendance analytics.

No sessions yet. Create your first session above.

person Player Characters

Add Player Character:

Battle Maps

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

Select a map from above to load the virtual tabletop