← /daily-startup-idea
May 14, 2026
GrudgeKeep
“A CRM for your grudges. Salesforce, but the leads are people who wronged you in 2017.”
The Problem
Your grudges · last 12 months · attention decay
Brother-in-law’s toast at your wedding
9 days
Coworker took credit for “the deck”
3 weeks
Barista who corrected your pronunciation
2 days
Friend who said you’d “peaked in college”
11 yrs
Dad (general)
∞
The average adult forgets 62%of valid grievances within 90 days. That’s free emotional laboryou’re leaving on the table.
The Solution
A pipeline tool that captures every slight, ranks it by severity, and reminds you to remain mildly bitter on a custom cadence. AI suggests proportionate petty responses (un-invite from group chat, leave a tepid Yelp review, simply remember).
GrudgeKeep · Personal Board · Q2 vendettas47 open · 3 resolved · 0 forgiven
Fresh2
Mom called my apartment “cute”
P2
Server skipped me at dinner
P3
Marinating3
Greg got the promotion
P1
Sister’s subtweet
P2
Landlord “forgot”
P2
Acted On2
Left review · 1★
P3
Removed from BeReal
P2
Cold Storage2
7th grade gym teacher
P4
Guy at DMV (2019)
P4
How It Works
Slight occurs
you say nothing
Voice memo
“so anyway today—”
AI triage
severity · half-life
Cold revenge
served on schedule
therapist integration: opt-out by default · forgiveness: premium add-on
Pricing
Free
$0Hold 3 grudges
- ✓Basic timeline
- ✓Daily “remember when” push
- ✓Banner ads (mildly insulting)
Petty Pro
$14/mo · most popular
- ✓Unlimited grudges
- ✓AI-drafted side-eye DMs
- ✓Anniversary reminders
- ✓Export to passive-aggressive caption
Family Plan
$39/mo · 6 seats
- ✓Shared ledger of who started it
- ✓Thanksgiving war room
- ✓Inheritance-grade audit log
- ✓Group chat enforcement bot
TAM
Total addressable resentment
2.1B adults with siblings × $14/mo × 12 mo
= $352.8B
(only-children excluded; they have a different product called Spite)
The Ask
$4M seed for: 2 engineers, 1 librarian to organize the archives, and a compliance lawyer to confirm that “cold revenge” is, in fact, just journaling.
Series A pitch:“We’re Notion, but every page is about Greg.”