Free tools
Founder tools. Zero paywalls.
Mathematically rigorous tools for e-commerce, digital advertising, and business finance. Free forever, no registration required.
Live tools
Ready to use now.
E-Commerce Profit & Ad-Spend Calculator Hub
Accurate unit economics simulator for local and global sellers (Shopify D2C, Meesho, Amazon India, Noon). Factors in real RTO returns, reverse courier penalties, Meta Ad CPA, and payment gateway fees.
- Shopify, Meesho, Amazon IN & Noon Presets
- RTO Reality & Reverse Courier Cost Modeler
- Break-Even ROAS & Max Allowable CPA
- What-If ROAS Sensitivity Matrix & Goal Seek
Platforms supported
- Shopify / D2C
- Meesho (0% commission)
- Amazon India
- Noon (GCC / AED)
- Universal (custom)
Updated April 2026
In the pipeline
Coming soon.
Meta & Google Ads Budget & Scaling Matrix
Plan your monthly marketing spend, target CPM, CTR, and conversion rate curves to avoid diminishing returns as your daily ad budget expands.
India GST & Input Tax Credit (ITC) Margin Tool
Compute forward GST liability, eligible Input Tax Credit on sourcing & logistics, and net tax payable per product category (5%, 12%, 18%, 28%).
Website Speed & Core Web Vitals Revenue Impact Estimator
Estimate how much additional revenue your e-commerce store or SaaS website captures by reducing LCP by 500ms and improving conversion rate.
Need a custom tool or web application?
Have a specific business calculator, internal automation, or custom software in mind? We build bespoke web tools tailored to your operations.