About

What is Chayaani?

Chayaani is a free tools platform by TSN Studio. Our goal is to build simple, practical tools for online sellers and entrepreneurs — tools that help you make better decisions without the complexity or cost of traditional software.

Every tool on Chayaani is free to use, requires no account, and is designed to work instantly in your browser. We plan to bring these tools to mobile app stores as well, so you can access them anywhere.

PODMargin — Our First Tool

PODMargin is the most comprehensive free profit calculator built for print-on-demand sellers. It lets you compare margins across 10+ providers in two categories — Fulfillment and Marketplace — with real, verified 2026 fee data.

Whether you're selling t-shirts, hoodies, mugs, or any other POD product, PODMargin helps you understand exactly how much profit you'll make after base costs, shipping, plan discounts, sales channel fees, payment processing, taxes, and return buffers.

Fulfillment Providers

These providers handle printing and shipping. You sell on your own channel (Etsy, Shopify, Amazon, or your own website):

  • Printful (Free & Growth plans)
  • Printify (Free & Premium plans)
  • Gelato (Free, Gelato+, Gold plans)
  • SPOD
  • Gooten

Marketplace Providers

These platforms are the sales channel — they handle the store, traffic, and transactions:

  • Redbubble (Standard, Premium, Pro tiers)
  • TeePublic (Artisan & Apprentice tiers)
  • Society6 (Curated marketplace)
  • Zazzle (Artist-set royalty)
  • Merch by Amazon (Royalty table by price point)

Sales Channels

For fulfillment providers, PODMargin calculates the real fees for:

  • Etsy — listing, transaction, payment processing, and offsite ad fees
  • Shopify — Starter, Basic, Grow, and Advanced plan rates
  • Amazon — Individual and Professional plans with tiered referral fees
  • Own Website — Stripe/PayPal payment processing rates

Etsy Fee Calculator

Our Etsy Fee Calculator is a standalone tool that shows you exactly how much Etsy takes from every sale. It breaks down all Etsy fees — listing fees, transaction fees, payment processing, offsite ads, currency conversion, and the regulatory operating fee — so you can see the true cost of selling on Etsy.

It also includes a quick reference table showing fees at different price points, making it easy to choose the right price for your products.

About TSN Studio

TSN Studio builds digital tools for e-commerce entrepreneurs. We believe that sellers shouldn't need expensive software or complicated spreadsheets to run their businesses smarter.

Chayaani is where we publish our tools — PODMargin and Etsy Fee Calculator are live, with more tools on the way. All free, no sign-up required.

Why We Built PODMargin

Print-on-demand is a great way to start an e-commerce business with zero upfront inventory costs. But with so many providers offering different base prices, shipping rates, and fee structures, it's hard to know which provider gives you the best margin on a given product.

PODMargin solves this by letting you plug in your numbers once and instantly see how your profit stacks up across all providers — ranked from best to worst.