About SwiftKitHub
Built to give online sellers, media buyers, and DTC founders transparent mathematical certainty.
Our Mission: Deterministic E-Commerce Financial Intelligence
Online selling has become extraordinarily complex. Between shifting marketplace referral tiers, payment gateway percentage spreads, creator affiliate splits, and ad auction CPM inflation, online sellers frequently scale revenue while losing net cash. We engineered this tool hub to provide instant, mathematically transparent certainty.
Every calculator and utility on SwiftKitHub operates under strict principles of computational determinism: no black-box estimations, zero hidden rounding drift, and zero server-side telemetry.
Default platform presets are directly referenced from published seller fee schedules across TikTok Shop, Etsy, Shopify, Stripe, PayPal, and Gumroad.
Zero pricing, cost, or margin data ever touches a database or server. All formulas execute locally in your browser's JavaScript memory heap in under 16ms.
We never lock fees into black-box code. If your store has custom negotiated rates or special category exemptions, every fee box is unlocked and editable.
Modeled on precision fintech terminals (Stripe, Linear, Refactoring UI). We utilize Swiss hairline grid architecture, high-contrast slate typography, and tabular numerals.
Frequently Asked Questions
Who built SwiftKitHub?
SwiftKitHub was built to provide online merchants, media buyers, and founders with deterministic, uncompromised financial modeling tools without bloated spreadsheets or login walls.
How do you maintain platform fee schedules?
Our team reviews documented platform merchant terms, fee schedules, and public policy releases bi-annually. All default inputs remain 100% editable for custom negotiated rates.
Why is the calculator completely free to use?
We monetize through non-intrusive display sponsorships and optional premium downloadable spreadsheets ($19 Pro Toolkit). The core browser tool remains free for everyone.
Is my proprietary store data secure?
Yes, 100%. All calculations execute entirely within your browser's JavaScript runtime. We never transmit, store, or sell your pricing, costs, or margins.
How can I suggest a fee update or new platform?
Use our Contact page to submit platform fee change notices, official policy links, or suggestions for additional marketplace calculators.