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Free Tools for Founders

Everything you need to plan, build, and launch your startup. No signup required.

💰

AI Model Pricing Calculator

Compare costs across GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, and more. Enter your usage and see exact costs.

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📊

SaaS Revenue Calculator

Calculate MRR, ARR, LTV, CAC payback period, and 12-month growth projections for your SaaS.

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🔒

Privacy Policy Generator

Generate a professional privacy policy for your app or website. Covers GDPR, CCPA, cookies, and more.

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✨

Startup Name Generator

Generate creative, brandable startup names instantly. Enter your industry and keywords to get suggestions.

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🛠️

Tech Stack Recommender

Answer a few questions and get a personalized tech stack recommendation for your project.

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🤖

AI Prompt Generator

Create optimized prompts for ChatGPT, Claude, and Gemini. Select your use case and get ready-to-use templates.

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✅

SaaS Idea Validator

Score your startup idea with 10 questions. Get a grade, risk assessment, and actionable next steps.

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📝

Landing Page Copy Generator

Generate hero headlines, feature descriptions, CTAs, and FAQ sections for your landing page.

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アイデアからローンチまで、AIがすべてを担当。Y BuildはAI時代の起業家のためのオペレーティングシステムです。構築、デプロイ、プロモーション、分析 — すべてを一つのプラットフォームで。.

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