The free tools every founder and builder wishes they had before shipping.
Three focused tools that solve the boring, expensive problems every launch runs into: not knowing what your real AI bill will be, not knowing whether your stack is production-ready, and not knowing which of the 200 things on a launch list actually matter for your stack. Built by Cafiyn Innovations for solo founders, indie hackers, vibe coders, and small teams.
Three tools. All free. Zero fluff.
Each tool sits at a real inflection point in a launch. You use them once, they take a few minutes each, they save you from expensive mistakes. Together they cover the 80 percent of a launch that is boring but load-bearing.
Free AI cost calculator
Model your real monthly AI bill across 22 providers before you commit. Claude Haiku 4.5, Sonnet 5, Opus 4.8, GPT-5, GPT-4.1, Gemini 2.5 Pro, DeepSeek V3, Grok 4, Mistral, Llama, ElevenLabs, Whisper, DALL-E, Flux, Runway, Sora, and more.
- Sliders for users, calls, tokens
- Live comparison across 79 models
- Recommendation engine picks your primary + fallback
- Optional email alerts if projected cost crosses a threshold
Free production-readiness audit
A 3-minute guided self-audit that grades your app on 10 production categories: auth, secrets, backups, rate limiting, payments, monitoring, HTTPS, validation, access control, dependencies. Get an honest A-F letter grade and a prioritized fix plan.
- Tiered scenarios per category (None / Basic / Standard / Pro)
- Radar chart of category scores
- Per-fix action plan with best practices, tools, and step-by-step how-to
- Shareable grade card + optional progress tracking
Free launch checklist
A stack-tailored pre-launch checklist for Lovable, Bolt.new, Replit Agent, v0 (Vercel), Next.js, React Native, Flutter, WordPress, Shopify, Webflow, or a custom stack. Every item explains why it matters, what to do, and how to verify.
- Pick your stack, get a filtered list
- Domain, legal, payments, monitoring, launch-day
- Notes and proof URL per item
- Milestone toasts at 25 / 50 / 75 / 100%
Why we give this away.
Cafiyn Innovations builds the paid platform that helps founders ship, sell, and grow. Cafiyn Pulse is our free front door. If we can help you launch cleanly, plan your AI costs, and pass your first App Store review, we earn a shot at being your platform when you outgrow spreadsheets and duct tape. If we do not, you still shipped a better product than you would have alone. That is a fair trade.
There is no paid tier of Cafiyn Pulse. There is no team plan gated behind a wall. There is no data harvesting arrangement with a third party. The tools are simply free because the alternative, a founder Googling “what should I check before launch” and stitching together seven half-relevant blog posts, is worse for everyone.
What this replaces.
Founders currently patch these problems with a mix of expensive alternatives that were not built for pre-launch teams.
| Alternative | Typical cost | Cafiyn Pulse equivalent |
|---|---|---|
| Fractional CTO doing an MVP audit | $3,000 to $15,000 one-time | Stack Grader (free, 3 min) |
| Security consultancy pre-launch review | $5,000 to $50,000 | Stack Grader (free) |
| FinOps analyst modeling AI provider mix | $100 to $250 per hour | Cost Comparator (free) |
| Custom launch-plan doc from an agency | $2,000 to $8,000 | Launch Checklist (free) |
| Stitching together 8 blog posts and a spreadsheet | Your entire weekend | All three (free, 30 min) |
Common questions.
Are these tools really free?
Yes. All three Cafiyn Pulse tools are free forever. No credit card required at signup. No trial that expires. No paid tier that unlocks the "real" features. The signup asks for a work email so your results save to your account.
What is the catch?
There is no catch. Cafiyn Pulse is a free product built by Cafiyn Innovations to help founders and small teams reach production quality without hiring consultants. It exists as a public good and a top-of-funnel introduction to the broader Cafiyn platform for teams that eventually want more.
Do you sell my data?
No. We never sell, rent, or share your data. Your work is stored in a managed EU-region Postgres instance. You can export it as JSON or permanently delete your account from your profile page in one click.
Who should use these tools?
Solo founders, indie hackers, vibe coders shipping with Lovable / Bolt.new / v0 / Replit Agent, AI builders trying to model their real API bill, small engineering teams pre-Series-A, freelancers and agencies preparing client deliverables, and mobile app makers preparing for App Store or Play Store submission.
What if the tool I need is not here yet?
Email hello@cafiyn.com and tell us what would help. We prioritise new tools based on real requests from real builders.
Do I need to be technical?
No. The Cost Comparator uses sliders. The Stack Grader is plain-English scenarios with tiered options. The Launch Checklist has why / what / how per item. You do not have to know what a webhook signature is, we tell you.
Open the tool.
Or start with the free AI Cost Comparator or the free Launch Checklist. All three take a few minutes each. All three save to your account so you can come back and pick up where you left off.
Open the free Stack Grader