Recommended Free Tools
An app store or webshop may deduct more than one kind of fee from a sale. Use a commission calculator to estimate what you keep, but model the exact store or platform, payment route, transaction type, country, and fee schedule date: a percentage alone cannot predict your payout.
What a commission calculator should show
A useful calculator compares the same sale under different fee arrangements and reports both the total deductions and your estimated net proceeds. It should identify each deduction separately rather than combining everything into one vague “commission.”
As an Amazon Associate I earn from qualifying purchases.
- Store or marketplace commission: a share charged under the applicable app-store terms.
- Payment-processing fee: a charge for processing the transaction. It may be a percentage, a fixed amount, or both.
- Platform transaction fee: an ecommerce platform charge that may apply in addition to payment processing.
- Recurring costs: a plan or other subscription cost, which should be shown alongside per-sale fees rather than hidden in them.
For an estimate, enter the country or storefront and currency, platform or marketplace, transaction category, payment route, applicable developer program or ecommerce plan, sale amount, and expected transaction count. Include fixed charges and relevant extras such as currency conversion or a platform transaction fee. Select the fee schedule’s effective date, then compare options using identical sale assumptions.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Treat the result as an estimate, not a payout guarantee. Eligibility, custom pricing, taxes, refunds, and contractual terms can change what is ultimately charged or paid.
#1 Best Overall
- Profitability calculations; cash flow function Calculates NPV and IRR for uneven cash flows
- Time-value-of-money and Amortization keys solve problems including: pension calculations, loans, mortgages, etc.
- Ideal calculator for students, managers and statisticians
- Built-in functionality : List-based one- and two-variable statistics with four regression options: linear, logarithmic, exponential and power
- The BA II Plus calculator is approved for use on the following professional exams: Chartered Financial Analyst exam. GARP Financial Risk Manager (FRM) exam. Certified Management Accountants exam
Why app-store fees are not one universal percentage
App-store terms depend on the marketplace, jurisdiction, program eligibility, transaction type, payment route, and date. A paid app, a digital in-app purchase, and a purchase made through an alternative billing arrangement may not follow the same fee treatment.
Apple: EU terms depend on the transaction route and applicable terms
Apple’s page describing EU business terms lists a 17% commission for specified iOS and iPadOS transactions, with a 10% rate for certain programs or qualifying subscriptions. It also describes a 3% payment-processing fee when Apple processes the payment and a Core Technology Fee in defined circumstances. These figures describe the terms on that page; they are not a universal Apple fee schedule. Apple says its payment-processing fee does not apply when a developer uses alternative payment processing or links out, although an alternative-payment commission may still apply. See Apple’s EU commissions, fees, and taxes and EU payment options documentation.
Rank #2
- HP 10BII+ FOR STUDENTS & PROFESSIONALS – This HP calculator is built for business, finance, accounting, and statistics courses. Perfect for learners and professionals who need to solve common financial problems quickly without memorizing formulas or relying on spreadsheets.
- 100+ FUNCTIONS FOR REAL WORLD MATH – Quickly solve time value of money, interest rates, loan payments, NPV, IRR, cash flows, and more. The 10bII+ also includes probability distributions for statistics courses—a feature not often found in financial calculators.
- ALGORITHMIC INPUT WITH DEDICATED KEYS – This high-school/college calculator uses algebraic and chain logic with minimal keystrokes. Layout appears the same as standard calculators for easy learning. Dedicated keys give quick access to commonly used financial and statistical functions
- APPROVED FOR MAJOR EXAMS – The HP 10bII+ algebra calculator is permitted for use on SAT, PSAT/NMSQT, and AP tests. An ideal statistics calculator and business calculator for school finance and accounting students preparing for class, coursework, or standardized exams.
- INCLUDES TRAVEL CASE, CLEANING CLOTH & BATTERIES– Slim, durable, and easy to keep on hand or store in a backpack or locker. Includes a protective case, cleaning cloth, and batteries so it’s ready out of the box. Large screen with clear contrast (non-backlit) is easy to read during exams or lectures.
Apple announced revised EU business terms in 2026, including replacement of the Core Technology Fee with a Core Technology Commission and revised commissions. Because the announcement alone does not establish every operative detail for every developer or transaction, use the effective date and terms applicable to the scenario, and verify them against Apple’s current developer documentation. The announcement is at Apple Developer News.
Free tools Windows power users keep installed
One-click scans. No signup required.
Google Play: check the current program and market rules
Google Play service fees can apply to covered paid-app and digital purchases made using Google Play Billing or qualifying alternative billing. Rates and rollout details depend on the market and program, so do not assign one percentage to every developer. Check the current Google Play service-fee guidance for the relevant case.
Rank #3
- Solves time-value-of-money calculations such as annuities, mortgages, leases, savings, and more
- Performs cash-flow analysis for up to 32 uneven cash flows with up to 4-digit frequencies
- Calculates various financial functions: Net Future Value Net present Value Modified Internal Rate of Return Internal Rate of Return Modified Duration Payback Discounted Payback
- The Texas Instruments BAII Plus Professional features an Automatic Power Down (APD) function for extended battery life
- Prompted display guides you through financial calculations showing current variable and label. Ten-digit display
Webshop costs can combine processor and platform charges
For a webshop, separate the payment provider’s processing charge from any transaction fee charged by the ecommerce platform. The same order can be subject to both, depending on the platform, plan, payment method, and route.
Shopify: plan and payment setup affect the comparison
Shopify’s pricing page lists plan-dependent online card rates as well as third-party transaction fees, and says rates and features vary by country. Its Help Center notes that some orders processed through Shopify Payments are excluded from the platform’s third-party transaction fees. Check the localized Shopify pricing and Shopify Payments information rather than applying US terms to another market.
Rank #4
- Profit margin calculation
- Quick and easy tax calculation
- Square root, sign change, and memory keys
- Attractive metallic design
- 12 digits
Stripe: a percentage may not be the whole processing charge
Stripe’s US pricing page illustrates how processing costs can vary by payment method and card context: charges can include a percentage plus a fixed amount, with additional charges for manually entered or international cards and currency conversion. These are US examples, not global terms. Check Stripe’s pricing page for the market and payment setup you are modeling.
How to compare two fee scenarios fairly
- Match the transaction. Use the same country, currency, product type, sale amount, expected volume, and payment method for every option.
- Select the applicable route and program. Choose store billing, alternative in-app billing, web checkout, or another provider, along with any required developer program or webshop plan.
- Enter every charge type. Include percentage and fixed processing fees, marketplace commission, platform transaction fees, currency conversion, and recurring plan costs where applicable.
- Set the fee schedule date. Select the terms that apply when the sale occurs; a recently announced change may not have the same effective date for every case.
- Compare total cost and net proceeds. Look beyond the headline percentage. Fixed charges and recurring costs can change which option costs less at your expected sales volume.
What an estimate cannot settle
A calculator is only as reliable as its inputs and the fee terms selected. Public pricing pages may not cover custom contracts, every eligibility rule, tax treatment, refunds, or every exception. For app stores, confirm the applicable terms in the relevant developer or Play Console documentation; for a webshop, confirm both the platform and payment provider’s current terms. Before relying on a result, verify the country, transaction route, plan, and effective date against those official sources.
Quick Recap
Best Value
- PROFESSIONAL FINANCIAL CALCULATOR : Built-in TVM, IRR, NPV. Engineered for business analysts, real estate investors, accountants, and finance students.
- ADVANCED CASH FLOW & AMORTIZATION : Execute time value of money, break-even analysis, depreciation schedules, and bond pricing. Trusted for professional exam prep, MBA coursework, and banking certifications.
- CATIGA CF-300 : Flip-open hard case with a snap-close design for a secure fit. Compact and portable: designed for daily professional use in office, classroom, or on-site.
- ALL-IN-ONE FOR PROFESSIONALS : From NPV/IRR for real estate analysis to statistical calculations for business analysts. Handles probability, linear regression, and complex financial formulas.
- MORTGAGE, LOAN & INVESTMENT CALCULATOR : Covers bond pricing, loan amortization, investment analysis, and exam-level computations. Your go-to accounting calculator, business calculator, and real estate calculator in one device.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
