Free Tools
Handy tools for everyday tasks — completely free
Tool Categories
Coding
Browse AI tools for code review, spreadsheet formulas, debugging prompts, and technical workflows.
Research
Browse AI tools for PDFs, research briefs, transcript summaries, legal document explanations, and source synthesis.
Writing
Browse AI tools for emails, essays, resumes, cover letters, product copy, and social content.
Students
Browse AI tools for essays, YouTube summaries, PDFs, interview prep, study notes, and clearer writing.
Founders
Browse AI tools for startup validation, research, product copy, meetings, social posts, and fundraising prep.
AI Model Utilities
All free utilitiesAI Model Picker Quiz
Answer a few questions and get a practical model recommendation for coding, research, writing, image prompts, or budget-sensitive work.
AI Model Price Calculator
Estimate input and output token cost for one run, a batch job, or a monthly workflow before choosing a model.
Context Window Calculator
Paste text or enter token counts to see whether a document fits inside common AI model context windows.
OpenRouter Model Leaderboard
Sort a practical model leaderboard by coding, research, writing, cost, speed, and context window fit.
AI Prompt Generator
Generate a structured prompt for coding, research, marketing, study, product, or writing work.
AI Model Comparison Generator
Choose two models and generate a simple comparison table for task fit, cost, speed, context, and model strengths.
AI Task Tools
Ask PDF AI
asking questions about PDFs, reports, policies, and long documents.
AI Code Reviewer
reviewing code for bugs, edge cases, maintainability, and missing tests.
AI Research Assistant
turning notes, sources, and messy research into clear findings and decisions.
AI Email Writer
drafting clearer professional emails, replies, follow-ups, and outreach.
AI Essay Writer
planning, outlining, improving, and editing essays without losing your argument.
AI Resume Reviewer
improving resumes with clearer bullets, stronger positioning, and role fit.
AI Cover Letter Writer
drafting tailored cover letters that connect your experience to a role.
AI Image Prompt Generator
creating detailed prompts for product images, ads, illustrations, and visual concepts.
AI Meeting Summarizer
turning meeting notes and transcripts into decisions, owners, and action items.
AI YouTube Summarizer
summarizing video transcripts into key points, takeaways, and reusable notes.
AI Product Description Writer
writing product descriptions, benefits, bullets, and ecommerce copy.
AI Social Media Post Generator
creating social posts, hooks, captions, and content variants for different channels.
AI Startup Idea Validator
stress-testing startup ideas, markets, risks, positioning, and first experiments.
AI Legal Document Explainer
explaining legal documents in plain language for review and discussion.
AI Spreadsheet Formula Helper
writing, explaining, and debugging spreadsheet formulas and data workflows.
Email Tools
Need a custom workflow? Open RyddleAI