the fokona.com appears to be mainly a financial education and investing community platform, not a full-featured commercial/business calculator system like dedicated commerce calculators or financial calculator apps.
So the answer is:
Partly yes for simple business/investment calculations.
No if you mean the full capabilities of a standard commerce/financial calculator.
A standard commercial calculator usually supports things like:
Simple interest
Compound interest
Profit & loss
Discount and markup
VAT/tax
Loan amortization
Installment calculations
Cash flow
Depreciation
Business statistics
Financial memory functions
Fokona focuses more on:
investment discussions,
financial literacy,
stock market learning,
Nigerian finance education,
and some investment-related calculations/discussions.
It does not appear to advertise advanced financial-calculator functions comparable to dedicated commerce calculators such as:
Casio commercial calculators,
Microsoft Excel financial templates,
or Nigerian calculator suites like calculators.ng which includes loan, VAT, ROI, profit, salary, tax, mortgage, and business calculators.
If your goal is:
basic investment and savings calculations, Fokona may be enough.
serious business/accounting/commercial calculations, a dedicated commerce calculator or financial calculator app would still be better.
Examples of stronger alternatives for commerce/business calculations:
calculators.ng — many Nigerian business and finance calculators.
calculate.ng — Nigerian tax/inflation/business tools.
Calculate.ng
Casio financial calculators like the FC-100V or FC-200V for professional commerce calculations.