For Dungeon Masters who prep too much

Know exactly what to prep.
Every single session.

Paste your last session notes. Prep Night reads them, finds the loose threads, and tells you precisely what to prepare next — nothing more, nothing less.

Free during beta · No credit card
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Prep Night AI Live Demo
Last session · your notes
"Party reached Thornwall. Kira confronted the guard captain — left on bad terms. They found the locked cellar but didn't open it. Balthazar mentioned the merchant Voss by name. Session ended at the tavern."
Prep Night recommends
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The problem

Sound familiar?

"

90% of my prep goes to waste because players do something completely reasonable I didn't account for.

r/DnD · 3 upvotes
"

Note-taking is probably the worst part. I always end up forgetting details because it happens so long after the session.

r/DnD · 4 upvotes
"

I feel like I prep constantly. 20+ hours of thought between sessions. But sitting down and writing? 1–2 hours max.

r/DnD · 2 upvotes
"

The part I hate most is not knowing what to prep for. Getting players to answer anything between sessions is like pulling teeth.

r/DnD · 6 upvotes
4–5 hrs
average DM prep time — for a 3-hour game
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How it works

From chaos to clarity.
In three steps.

Step 01
Input

Paste your last session notes

Messy bullet points, voice memo transcripts, scribbles — whatever you have. Prep Night reads anything.

Step 02
AI Analysis

It finds what actually matters

Unresolved threads, promises you made to players, NPCs they engaged with, plot hooks they touched. The stuff that needs prepping.

Step 03
Output

Get a focused session brief

A clean, printable one-pager: what to prep, who needs fleshing out, what the players are likely to do next. Nothing wasted.

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Sample output

Your prep brief,
ready to run from.

Session Brief Session 7 → 8 · The Thornwall Arc
The Locked Cellar
Open Threads — Must Prep
  • The locked cellar — players will almost certainly return. Decide what's inside before the session.
  • Guard Captain Drell — Kira left on bad terms. He has motive to make trouble. How does he act next time they meet?
  • Merchant Voss — Balthazar named him unprompted. Players noticed. Who is Voss, and does he know he's been mentioned?
NPCs to Flesh Out
Captain Drell Antagonistic · Has not acted yet · Needs: motivation, what he does when not confronted
Merchant Voss Unmet · Introduced by name only · Needs: appearance, agenda, connection to Balthazar
Likely Player Actions Next Session
  • Investigate the cellar (high confidence)
  • Seek out Voss, or ask about him (medium confidence)
  • Avoid the guard captain, or try to make amends (Kira's player decision)
Skip Prepping

The wider city map, the merchant guild backstory, and the northern road encounter — players showed no interest. Save it for later.

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Pricing

Simple, one-time pricing.

Pay once. Use it for your whole campaign.

One-Shot
USD 4
per session brief
  • Single session brief
  • Paste any notes format
  • PDF export
  • No account needed
Campaign
USD 29
one-time · unlimited sessions
  • Unlimited session briefs
  • Campaign memory across sessions
  • NPC tracker — auto-updated
  • PDF + shareable link export
  • Priority access to new features

Stop prepping the wrong things.
Start every session ready.

Join the waitlist. Free during beta.