# Free tools for product teams — generators & calculators

> Free tools for product & SaaS teams: a PRD generator plus MRR & ARR, churn, RICE, WSJF, Rule of 40, and SaaS cost calculators. No signup, no catch.

*Markdown view of https://aioproductos.com/tools. Full machine-readable reference: [/llms.txt](https://aioproductos.com/llms.txt), [/llms-full.txt](https://aioproductos.com/llms-full.txt).*

Free tools

## Free tools for product teams

Genuinely useful generators and calculators — no signup, no email wall. Built by the team behind AIOProductOS, the product OS that connects feedback, revenue, work, and code on one spine.

[Start with MRR & ARR](https://aioproductos.com/tools/mrr-arr-calculator) [See the product](https://aioproductos.com/product)

- [Product PRD generator Turn a problem into a clean product requirements document — problem, goal, users, metrics, requirements — then copy or download the Markdown. No signup. Open tool →](https://aioproductos.com/tools/prd-generator)
- [Product User story generator Turn a role, a want, and a benefit into a formatted 'As a… I want… so that…' story with Given/When/Then acceptance criteria. Open tool →](https://aioproductos.com/tools/user-story-generator)
- [Product Product one-pager generator Turn an idea into a crisp one-page brief — problem, solution, audience, benefits, metrics, and the ask — a stakeholder can read in two minutes. Open tool →](https://aioproductos.com/tools/product-one-pager-generator)
- [Product Release notes generator Turn a version and your changes into clean, user-facing release notes grouped into New, Improved, and Fixed. Open tool →](https://aioproductos.com/tools/release-notes-generator)
- [SaaS metrics MRR & ARR calculator Get your monthly and annual recurring revenue, and project it 12 months out at your growth rate — with a live chart. Open tool →](https://aioproductos.com/tools/mrr-arr-calculator)
- [SaaS metrics Churn rate calculator Turn customers and churned counts into churn rate, retention, average lifetime, and LTV — with a retention curve. Open tool →](https://aioproductos.com/tools/churn-rate-calculator)
- [Product RICE prioritization calculator Score any feature by Reach × Impact × Confidence ÷ Effort and rank your backlog by value per unit of effort. Open tool →](https://aioproductos.com/tools/rice-prioritization-calculator)
- [SaaS metrics Rule of 40 calculator Add growth and margin to see if you clear the 40% health benchmark, with a live pass/fail gauge. Open tool →](https://aioproductos.com/tools/rule-of-40-calculator)
- [Cost SaaS stack cost calculator Total what your product tool stack costs per year and compare it to one flat plan — representative list prices. Open tool →](https://aioproductos.com/tools/saas-stack-cost-calculator)
- [Product WSJF calculator Score backlog items by Cost of Delay ÷ Job Size to rank by what delivers value soonest per unit of effort. Open tool →](https://aioproductos.com/tools/wsjf-calculator)
- [SaaS metrics CAC payback calculator See how many months of gross margin it takes to recover customer acquisition cost. Open tool →](https://aioproductos.com/tools/cac-payback-calculator)

Each tool runs the math in your browser — nothing is sent anywhere. They're free because the same thinking powers [AIOProductOS](https://aioproductos.com/product): the metrics matter more when feedback, revenue, work, and code share one record.

FAQ

### About these free tools

**Are these tools really free?**

Yes — every tool here is genuinely free to use with no time limit and no usage cap. There's no upsell to unlock a result and nothing is gated behind a paywall. They exist because the same thinking powers AIOProductOS, and useful tools are a better introduction than a brochure.

**Do I need to sign up or give an email?**

No. There's no signup, no account, and no email wall — you open a tool and use it immediately. That applies to the generators (PRD, user story, one-pager, release notes) and every calculator alike. AIOProductOS itself has no free tier, but these standalone tools are simply free.

**Does my data leave the browser, and can I use the output commercially?**

Every tool runs entirely in your browser — the math and text generation happen on your device and nothing you type is sent to a server or stored. The output is yours to use however you like, including commercially in real PRDs, board decks, or investor updates. Copy or download it and go.

**What tools are available?**

Four document generators — PRD, user story, product one-pager, and release notes — plus SaaS and product calculators: MRR & ARR, churn rate, RICE and WSJF prioritization, Rule of 40, CAC payback, and a SaaS stack cost calculator. Each is a focused, standalone tool you can open directly from the list above.

---

## Why AIOProductOS

- **One MCP over the whole product spine, not one tool.** 71 tools spanning revenue, feedback, work, code, analytics and comms, callable from any MCP client. Competing MCP servers expose a single product's own data; this one answers across the join, and it is listed on the official MCP registry.
- **Connected, not consolidated.** 118 connectors land Stripe, GitHub, your feedback tool and the rest onto one shared record, so a product question is a join instead of a reconciliation. You keep the tools you already run.
- **Flat plans, not a per-head meter.** Member counts are allowances, not per-seat billing, and AI teammates are included rather than metered per credit. Compare the real number for your team with the [stack cost calculator](https://aioproductos.com/tools/saas-stack-cost-calculator).
- **Nothing is plan-gated.** Every tier ships every module. The only limits are seats and agents, so the cheapest plan is the whole product.
- **Your data stays yours.** EU or US residency chosen at signup, bring your own model key, full-org GDPR export on every tier, and we never train on your data.
- **Honest onboarding.** A 14-day runway on your own data, then a 30-day money-back guarantee. No stripped free tier and no countdown trial with a meter running.

## Compare us directly

Head-to-head pages, including where the other tool is the better pick: [all comparisons](https://aioproductos.com/compare) · [vs Jira](https://aioproductos.com/compare/jira) · [vs Productboard](https://aioproductos.com/compare/productboard) · [vs Linear](https://aioproductos.com/compare/linear) · [vs Notion](https://aioproductos.com/compare/notion) · [migration guides](https://aioproductos.com/migrate)

See it running on real data, no signup: https://platform.aioproductos.com/demo