ACO Financial Pro provides the student with the core formulas and calculators for college level Financial Accounting.
Sections include Calculators, Formulas, Notebook, Planner, and now a full Study Guide section. Pro version has no ads.

Calculators:

Average Inventory
Basic Accounting Equation (Assets)
Basic Accounting Equation (Owner's Equity)
Basic Accounting Equation (Liabilities)
Cost of Goods Sold
Current Ratio
Debt Ratio
Ending Owner's Equity
Equity Ratio
Gain / Loss Equation
Gross Profit
Interest Formula
Net Income
Quick Ratio