Tools that took one night to build
We challenged ourselves: build one useful tool every night for 8 nights straight. No frameworks, no backends, no auth walls. Just single HTML files that solve real problems.
The backstory
Most "overnight builds" are marketing stunts. Ours aren't. Each tool was genuinely built in a single evening session — start to finish, idea to deployed.
The constraint: one self-contained HTML file. No React. No npm install. No build step. No backend. No database. Just HTML + CSS + JavaScript that runs anywhere, works offline, and keeps your data in localStorage.
Why? Because the best tool is the one you can actually use. No signup friction. No "starts free, pay later." No "we need your email first." Open the link. Use the tool. That's it.
Each tool solves a problem we personally had. If it's useful to us, maybe it's useful to you.
All 8 tools
Startup Idea Validator
Validate before you build
Score your startup idea across 8 dimensions — market, timing, defensibility, and more. Get a reality check in 5 minutes.
Job Pipeline
Track your hunt
Kanban-style job application tracker. Move applications through stages, track follow-ups, never lose a lead.
Offer Compass
Compare job offers intelligently
Side-by-side job offer comparison tool. Weighs salary, equity, growth, culture, and more. See which offer actually wins.
NetMap
Your networking CRM
Track everyone you meet. Relationship strength, last contact, follow-up reminders. Stop losing connections.
Invoice Forge
Professional invoices in seconds
Generate clean, professional invoices. Add line items, taxes, notes. Download as PDF. No signup needed.
Ship Log
Build in public tracker
Log what you ship, every day. Track streaks, milestones, and progress. Your building-in-public companion.
Content Planner
Plan, ship, grow
Visual content calendar for creators. Drag-and-drop scheduling, platform tags, idea backlog. Stay consistent.
Interview Ace
PM interview prep & practice
48 curated PM interview questions. Timed practice mode. STAR answer builder. Weakness analysis. Ace the interview.
How each tool gets built
Spot a real problem
Every tool starts with a personal frustration. "I wish this existed" is the trigger. No market research, no competitor analysis. Just a real itch.
Scope to one evening
The constraint is brutal: everything must fit in a single HTML file and be useful by midnight. This forces ruthless prioritization — what's the ONE thing this tool must do?
Build with AI as co-pilot
We use AI (Claude, specifically) as a coding partner. Describe what we want, iterate on the output, add our design polish. The AI handles boilerplate, we handle taste.
Ship by midnight
No "almost done." No "needs polish." If it works and solves the core problem, it ships. Perfect is the enemy of shipped. We can always improve tomorrow.
Free forever, no strings
Every tool uses localStorage — your data never leaves your browser. No accounts, no tracking, no "upgrade to pro." If we ever build a paid product from one of these, the free version stays free.
Want us to build your idea overnight?
We build MVPs for founders who need to ship fast. If we can build these tools in one night, imagine what we can do in a week.
See what we build →