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PromptDiary — Personal Prompt Journal for Power Users

Why This is an Opportunity

Minimal CRUD app with tagging and search. AI enthusiasts are a passionate B2C audience who love paying for tools that improve their workflow.

Key Pain Points

  • You wrote the perfect prompt 3 weeks ago and now you're scrolling through chat history trying to find it
  • Bookmarking ChatGPT conversations is useless because the prompt is buried in a 40-message thread
  • Switching between AI tools means your prompt history is fragmented across 5 different platforms
  • No way to tag or categorize prompts so you can find 'all my coding prompts' or 'all my writing prompts'
Market Opportunity
AI Prompt Management and Workflow Optimization Tools Market
Current Size (2026)
$0.3B
Projected (2036)
$4.1B
CAGR
27.9%
This market is projected to grow 1077% over the next 10 years, reaching $4.1B by 2036.

Original Discovery

AI power users run dozens of prompts a day across ChatGPT, Claude, Midjourney, and others, but there's no good way to save the ones that worked really well. PromptDiary is a personal prompt journal — quickly save a prompt with the model used, the context, and a rating. Search and filter later when you need that perfect prompt again.

Ready to Build This?

Sign up to save this opportunity and get your personalized MVP kit. Includes domain name suggestions, boilerplate code, and AI prompts to build your MVP rapidly.

Free MVP kit • Domain finder • Starter code