Free tools
Tools for founders, developers, and product teams
Practical free tools to plan, estimate, choose, and validate before you build. No signup for the basic output.
Founder & product tools
4 toolsMVP Cost Calculator
How much will your product cost to build?
Get an instant cost range and timeline for your web app, mobile app, SaaS, or marketplace based on features, complexity, and your launch window.
- Instant estimate — no call or signup required
- Based on real Codalyst Tech project rates
- Detailed feature-level breakdown via email
Tech Stack Picker
Which technologies should you build with?
Answer questions about your product type, scale, and budget. Get a concrete frontend, backend, database, and hosting recommendation with clear reasoning.
- Tailored to your stage, scale, and budget
- Covers 7 product types from SaaS to marketplaces
- Full architecture notes and scaling risks via email
MVP Planner
What should actually be in your v1?
Describe your idea, audience, and target features. Get a structured MVP plan: must-haves, nice-to-haves, what to cut, and a suggested build roadmap.
- AI powered plan from a short description
- Separates core features from scope creep
- Full sprint plan and risk areas via email
AI Feasibility Checker
Is your AI feature actually buildable?
Describe what you want AI to do. Find out if it's feasible, which approach to use (API, RAG, fine-tuning, or workflow), and what the real risks are.
- Feasibility score with recommended approach
- Covers 8 task categories from document analysis to predictions
- Full implementation plan and architecture via email
Developer utilities
8 toolsDeveloper Tools Hub
Eight free utilities for everyday developer tasks
JSON Formatter
Browser
JWT Decoder
Browser
TypeScript Types
Browser
ENV Example
Browser
Regex Generator
AI assisted
Cron Builder
AI assisted
SQL Explainer
AI assisted
API Mock Generator
AI assisted
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