I Built 30 AI Tools and Bundled Them for $49/mo
I spent a weekend building 30 AI-powered micro-tools. Each one solves a specific problem. All of them work for free in demo mode. Here's every tool, what it does, and who it's for.
The Stack
Every tool is built with the same architecture:
- Frontend: React + Vite + Tailwind CSS
- Backend: Vercel serverless functions
- AI: Claude Haiku API
- Payments: Stripe Checkout
Total cost to build: $0 (all free tiers).
Writing & Content (8 tools)
1. AI Bio Writer — $5
What it does: Generate professional bios for Twitter (160 chars) and LinkedIn (220 chars).
Who it's for: Anyone updating their social profiles.
Try it: ai-bio-writer-eta.vercel.app
2. AI Blog Outline — $15/mo
What it does: Enter a target keyword, get a full SEO blog post outline with H2/H3 hierarchy, meta description, and content notes.
Who it's for: Content marketers, bloggers, SEO writers.
Try it: ai-blog-outline.vercel.app
3. AI Tweet Thread Writer — $9/mo
What it does: Convert any idea or article into a 5/7/10-tweet thread optimized for engagement.
Who it's for: Twitter/X creators, founders building in public.
Try it: ai-tweet-thread-writer.vercel.app
4. LinkedIn Post Generator — $9/mo
What it does: Create viral LinkedIn posts using 4 proven frameworks: Storytelling, Listicle, Hot Take, Lessons Learned.
Who it's for: Founders, recruiters, thought leaders.
Try it: linkedin-post-generator-five-omega.vercel.app
5. README Generator — $5
What it does: Generate professional GitHub READMEs with badges, installation, usage, API docs, contributing, and license sections.
Who it's for: Open source maintainers, developers.
Try it: readme-generator-coral.vercel.app
6. Changelog Generator — $12/mo
What it does: Paste git commits, get a formatted changelog in Keep a Changelog format. Auto-categorizes into Added/Changed/Fixed/Removed.
Who it's for: Dev teams, release managers.
Try it: changelog-generator-orcin.vercel.app
7. AI Standup Writer — $5/mo
What it does: Input yesterday/today/blockers, get a polished daily standup summary.
Who it's for: Developers, remote teams.
Try it: ai-standup-writer.vercel.app
8. AI Code Reviewer — $19/mo
What it does: Paste code, get a senior engineer-level review with severity ratings and fix suggestions.
Who it's for: Solo developers, junior devs learning best practices.
Try it: ai-code-reviewer-olive-rho.vercel.app
Sales & Outreach (5 tools)
9. AI Cold Email Writer — $29/mo
What it does: Generate personalized B2B cold emails with industry and ICP targeting.
Who it's for: SDRs, founders doing outbound.
Try it: ai-cold-email-writer.vercel.app
10. AI Cold Outreach System — $39/mo
What it does: Build multi-step cold email sequences (3-5 emails) with follow-up timing and personalization notes.
Who it's for: Sales teams running outbound campaigns.
Try it: ai-cold-outreach-system.vercel.app
11. Email Subject Generator — $9/mo
What it does: Generate 10 email subject line options with predicted open rates and A/B testing scoring.
Who it's for: Email marketers, newsletter creators.
Try it: email-subject-generator-roan.vercel.app
12. SaaS Onboarding Email Builder — $49
What it does: Generate a complete 7-email onboarding sequence with subject lines, send timing, and personalization tokens.
Who it's for: SaaS founders, growth teams.
Try it: saas-onboarding-email-builder.vercel.app
13. Refund Email Writer — $4
What it does: Write polite but firm refund request emails for any situation.
Who it's for: Anyone who needs a refund.
Try it: refund-email-writer.vercel.app
SEO & Marketing (6 tools)
14. SEO Meta Generator — $19/mo
What it does: Input any content, get optimized SEO title, meta description, and keywords with character count validation.
Who it's for: Web developers, content managers.
Try it: seo-meta-generator-lemon.vercel.app
15. Niche Keyword Finder — $15/mo
What it does: Enter any niche, get 12+ low-competition keywords with difficulty scores and content angles.
Who it's for: SEO specialists, bloggers.
Try it: niche-keyword-finder.vercel.app
16. ASO Optimizer — $29/mo
What it does: Optimize App Store and Google Play listings with before/after scoring.
Who it's for: Mobile app developers, ASO specialists.
Try it: aso-optimizer.vercel.app
17. AI Product Description — $19/mo
What it does: Generate e-commerce product copy for Amazon, Shopify, Etsy in multiple formats.
Who it's for: E-commerce sellers, copywriters.
Try it: ai-product-description-roan.vercel.app
18. Website Roaster — $5
What it does: Get a brutal AI critique of your landing page with specific issues and actionable fixes.
Who it's for: Founders, marketers pre-launch.
Try it: website-roaster-two.vercel.app
19. Favicon Generator — $4.99
What it does: Describe your brand, get an AI-generated SVG favicon.
Who it's for: Web developers, startup founders.
Try it: favicon-generator-phi-five.vercel.app
HR & Career (5 tools)
20. AI Resume Screener — $9/mo
What it does: Paste a job description and resume, get an instant fit score with detailed feedback.
Who it's for: Recruiters, hiring managers.
Try it: ai-resume-screener-puce-psi.vercel.app
21. Cover Letter Generator — $7/mo
What it does: Generate tailored cover letters by matching your resume to the job description.
Who it's for: Job seekers.
Try it: cover-letter-generator-eight.vercel.app
22. Job Description Writer — $15/mo
What it does: Create compelling job postings with seniority level and work style selectors.
Who it's for: HR teams, founders hiring.
Try it: job-description-writer-seven.vercel.app
23. Interview Prep Tool — $12/mo
What it does: Enter a job title, get likely interview questions with model answers.
Who it's for: Job candidates preparing for interviews.
Try it: interview-prep-tool-ashy.vercel.app
24. Salary Negotiation Email — $7
What it does: AI writes your salary negotiation or counter-offer email.
Who it's for: Anyone negotiating compensation.
Try it: salary-negotiation-email.vercel.app
Business & Legal (6 tools)
25. Contract Generator — $19
What it does: Professional freelance contracts with custom terms, kill fees, IP ownership, and payment schedules.
Who it's for: Freelancers, agencies.
Try it: contract-generator-ivory-three.vercel.app
26. Terms Generator — $9
What it does: Generate Terms of Service, Privacy Policy, and Cookie Policy for any app or website.
Who it's for: App developers, website owners.
Try it: terms-generator-smoky.vercel.app
27. Invoice Generator — $7/mo
What it does: Professional invoices with AI-polished descriptions, dynamic line items, and PDF export.
Who it's for: Freelancers, small businesses.
Try it: invoice-generator-ashy-rho.vercel.app
28. AI Pitch Deck Outline — $29
What it does: Generate a 12-slide investor pitch deck outline with bullet points and speaker notes.
Who it's for: Startup founders raising capital.
Try it: ai-pitch-deck-outline.vercel.app
29. Startup Name Generator — $5
What it does: Describe your idea, get 20 brandable name options with domain suggestions.
Who it's for: Entrepreneurs starting a company.
Try it: startup-name-generator-phi.vercel.app
30. Competitor Intelligence Tool — $49
What it does: Enter competitor URLs, get structured analysis with positioning maps, feature gaps, and recommendations.
Who it's for: Product managers, founders.
Try it: competitor-intelligence-tool-phi.vercel.app
The Bundle
Buying all 30 tools individually would cost over $400/month. The All Access Pass gives you everything for $49/month (or $24.92/mo on the yearly plan).
Every tool has a free demo mode, so you can try before you buy. No signup required.
What tool should I build next? Drop a comment below!
Top comments (0)