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DevFormula
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Simulate payment processing fees, next-gen AI token costs, serverless compute, and SaaS financial unit economics in real time.

102+ Dedicated Calculators
4 Categories
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100% Static SSG

Payment Processing & Gateways

1 tools

AI Tokens & Cloud Compute

31 tools
LLM Token Cost EngineVerified 2026-10-21

OpenAI GPT-4o API Token Cost Calculator

Calculate monthly token costs and cloud budget for OpenAI GPT-4o omni multimodal model based on prompt and completion token volume.

Projected Monthly BillDaily Burn RateMonthly Total TokensMonthly Input Cost ShareMonthly Output Cost Share
Launch Simulator
LLM Token Cost EngineVerified 2026-10-21

Claude 3.5 Sonnet API Token Pricing Calculator

Calculate Anthropic Claude 3.5 Sonnet API token costs, prompt caching discounts, and monthly cloud burn rates ($3.00 / $15.00 per 1M).

Projected Monthly BillDaily Burn RateMonthly Total TokensMonthly Input Cost ShareMonthly Output Cost Share
Launch Simulator
LLM Token Cost EngineVerified 2026-10-21

Claude 3.7 Sonnet Hybrid Reasoning Cost Calculator

Calculate API token costs for Claude 3.7 Sonnet hybrid reasoning model ($3.00 input / $15.00 output per 1M tokens).

Projected Monthly BillDaily Burn RateMonthly Total TokensMonthly Input Cost ShareMonthly Output Cost Share
Launch Simulator
LLM Token Cost EngineVerified 2026-10-21

DeepSeek V3 API Token Cost & Cloud Budget Calculator

Calculate ultra-low-cost AI token expenses on DeepSeek V3 ($0.14 input / $0.28 output per 1M tokens). Over 90% cheaper than competitors.

Projected Monthly BillDaily Burn RateMonthly Total TokensMonthly Input Cost ShareMonthly Output Cost Share
Launch Simulator
LLM Token Cost EngineVerified 2026-10-21

DeepSeek R1 Open Reasoning API Cost Calculator

Calculate open reasoning model costs for DeepSeek R1 ($0.55 input / $2.19 output per 1M tokens). Elite math and code reasoning at low cost.

Projected Monthly BillDaily Burn RateMonthly Total TokensMonthly Input Cost ShareMonthly Output Cost Share
Launch Simulator
Serverless Compute EngineVerified 2026-10-21

AWS Lambda x86 Serverless Compute Cost Calculator

Calculate monthly AWS Lambda x86 serverless function costs based on memory allocation, execution duration, and monthly invocations.

Total Monthly Cloud BillCompute Runtime ChargeInvocation Request ChargeMonthly GB-Seconds ConsumedEffective Cost per 1M Calls
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SaaS Unit Economics & Growth

30 tools
LTV & CAC EngineVerified 2026-10-21

SaaS LTV to CAC Ratio & Unit Economics Calculator

Calculate your SaaS LTV:CAC ratio, Customer Lifetime Value, and CAC Payback Period. Benchmark against the 3.0x gold standard.

Customer Lifetime Value (LTV)LTV to CAC Health RatioCAC Payback PeriodAverage LifespanNet LTV Profit Contribution
Launch Simulator
MRR Growth EngineVerified 2026-10-21

SaaS MRR to ARR Growth Rate Calculator

Calculate Net New MRR, Annualized Run Rate (ARR), month-over-month growth percentage, and SaaS trajectory.

Ending Monthly Recurring RevenueAnnualized Run Rate (ARR)Net New Added MRRMonth-over-Month GrowthSaaS Quick Ratio
Launch Simulator
LTV & CAC EngineVerified 2026-10-21

SaaS CAC Payback Period & Capital Efficiency Calculator

Calculate your SaaS CAC payback period. Measure how many months of subscription gross profit are required to break even on marketing spend.

Customer Lifetime Value (LTV)LTV to CAC Health RatioCAC Payback PeriodAverage LifespanNet LTV Profit Contribution
Launch Simulator
MRR Growth EngineVerified 2026-10-21

Net Revenue Retention (NRR) & Expansion Calculator

Calculate expansion revenue momentum and Net Revenue Retention (NRR). Benchmark against the 120%+ public SaaS gold standard.

Ending Monthly Recurring RevenueAnnualized Run Rate (ARR)Net New Added MRRMonth-over-Month GrowthSaaS Quick Ratio
Launch Simulator
ROAS Break-Even EngineVerified 2026-10-21

E-Commerce Break-Even ROAS Calculator

Calculate the exact break-even Return on Ad Spend (ROAS) required for your e-commerce store based on product COGS and profit margins.

Return on Ad Spend (ROAS)Net Profit from AdvertisingBreak-Even ROAS ThresholdEffective Cost Per Acquisition (CPA)Net Margin on Ad Revenue
Launch Simulator
LTV & CAC EngineVerified 2026-10-21

AI Wrapper SaaS Unit Economics & Margin Calculator

Calculate customer lifetime value for generative AI apps and wrappers factoring in 20% to 40% LLM token API inference costs.

Customer Lifetime Value (LTV)LTV to CAC Health RatioCAC Payback PeriodAverage LifespanNet LTV Profit Contribution
Launch Simulator

Marketplace & App Store Fees

40 tools
Payment Fee EngineVerified 2026-10-21

Stripe US Standard Card Fee Calculator

Calculate exact Stripe US domestic credit and debit card processing fees, net take-home payout, and reverse payout target price.

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
Launch Simulator
Payment Fee EngineVerified 2026-10-21

PayPal US Merchant Processing Fee Calculator

Calculate exact PayPal US merchant processing fees (3.49% + $0.49 for standard PayPal Checkout and digital wallet transactions).

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
Launch Simulator
Payment Fee EngineVerified 2026-10-21

Shopify Basic Plan Processing Fee Calculator

Calculate Shopify Basic plan online processing fees (2.9% + 30¢ with Shopify Payments) and net store sales profit.

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
Launch Simulator
Payment Fee EngineVerified 2026-10-21

Lemon Squeezy Merchant of Record Fee Calculator

Calculate Lemon Squeezy fees for digital products and SaaS. 5% + 50¢ flat pricing including global tax compliance and Merchant of Record.

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
Launch Simulator
Payment Fee EngineVerified 2026-10-21

Gumroad Creator Net Payout & Fee Calculator

Calculate net creator earnings on Gumroad with the 10% flat platform fee and credit card processing deductions.

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
Launch Simulator
Payment Fee EngineVerified 2026-10-21

Apple App Store Small Business 15% Calculator

Calculate iOS developer take-home revenue with the Apple App Store Small Business Program (reduced 15% commission for < $1M revenue).

Net Take-Home PayoutTotal Processing DeductionsNet Margin PercentageBreak-Even Sales PriceRequired Charge for $100 Net
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