Interactive Tools & Calculators

Free Developer & Founder Tools

Unbiased, client-side interactive calculators designed to help developers and SaaS founders plan tech budgets, estimate AI overheads, and choose startup starter templates.

Popular

LLM API Cost Calculator

AI Cost Estimation

Estimate token consumption and API costs across OpenAI, Anthropic, Google Gemini, and open-source models under real-world usage scenarios.

Token-to-cost conversion
Multi-model side-by-side comparison
Custom usage presets

Highly Rated

SaaS Stack Cost Estimator

SaaS Planning

Select your software layers (hosting, database, auth, email, CRM) and estimate the monthly/annual costs to launch and scale your startup.

Modular infrastructure layers
Free tier offset detection
Exportable budget estimates

New

Boilerplate Customizer & Finder

Startup Starter

Find and configure the perfect Next.js boilerplate starter kit matching your backend, authentication, databases, and UI choices.

Interactive tech stack quiz
Curated Next.js starter templates
Feature comparison matrix

100% Client-Side & Privacy-First

All calculations, settings, and stack choices are processed entirely in your browser. We do not store, track, or share your budget values, API keys, or startup planning inputs. Use these tools as often as needed to estimate startup configurations with complete privacy.