PureBuild is a collection of free, deterministic calculators designed for startup founders and builders. Our tools help you make data-driven decisions about equity, dilution, runway, unit economics, and more.

Are PureBuild tools really free?

Yes, all PureBuild tools are completely free to use. No sign-up required, no hidden fees, no premium tiers. We believe essential business calculations should be accessible to everyone.

Do I need to create an account?

No. All PureBuild tools work without any sign-up or registration. Your data stays in your browser and is never sent to our servers.

What tools does PureBuild offer?

PureBuild offers 9+ specialized calculators including: Equity Calculator, Dilution Simulator, Runway Calculator, Unit Economics Modeler, Payment Gateway Fee Calculator, API Token Cost Estimator, Database Capacity Planner, Viral Coefficient Calculator, and True Hourly Rate Calculator.

How do Apple and Google app store fees work?

Both take 30% for most developers, reduced to 15% for small businesses earning under $1M/year. For subscriptions after year 1, fees drop to 15%. A $9.99 app nets you $6.99 or $8.49.

Which payment gateway has the lowest fees?

For most businesses: Stripe or Square (2.6-2.9%). For high volume: negotiate custom rates. For international: Wise or Payoneer may be cheaper. Apple/Google's 30% is highest but often necessary.

How do I reduce payment processing fees?

Negotiate volume discounts, use ACH/bank transfers for B2B, offer annual billing to reduce per-transaction costs, and consider passing fees to customers where acceptable.

How do Apple and Google app store fees work?

Both take 30% for most developers, reduced to 15% for small businesses earning under $1M/year. For subscriptions after year 1, fees drop to 15%. A $9.99 app nets you $6.99 or $8.49.

Which payment gateway has the lowest fees?

For most businesses: Stripe or Square (2.6-2.9%). For high volume: negotiate custom rates. For international: Wise or Payoneer may be cheaper. Apple/Google's 30% is highest but often necessary.

How do I reduce payment processing fees?

Negotiate volume discounts, use ACH/bank transfers for B2B, offer annual billing to reduce per-transaction costs, and consider passing fees to customers where acceptable.

Payment Gateway Fee Calculator: Stripe, PayPal, Apple, Google Fees

PUREBUILD NR-6000

PRICE ($)INPUT MODE

Payment Gateway

PROGRESS0/1 REQUIRED

Enter price and select gateway

50,000+ calculations

Last updated: 2025-01

Unit Economics

Calculate LTV:CAC and unit profitability

True Hourly Rate

Find your real hourly compensation

API Token Cost

Estimate AI API costs

Learn the Math

→ Net Revenue Reality → SaaS Pricing Strategy

Pro tip: All calculations run in your browser. Your data never leaves your machine. Use keyboard shortcuts for faster input.

Frequently Asked Questions

Stripe charges 2.9% + $0.30 per transaction for US cards. International cards add 1-2% more. For a $100 sale, you'd pay $3.20 in fees, receiving $96.80 net.

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Frequently Asked Questions