My Finance Manager (Free)

If you're in business, in job or are a student of business, this app can be useful for you.
It will provide you:

Straight Line Depreciation
Production/ Use Based Depreciation
Declining Depreciation
Double Declining Depreciation
Sum of Year Digits Depreciation
Average Collection Period
Days in Inventory
Estimated Earnings
Investment-Future Value
Investment- Present Value
Investment - Ending Balance with Compound Interest
Investment - Ending Balance with Simple Interest
Loan - Installment Payment
Loan - Remaining Balance (Amortization)
Net Profit Margin
Net Working Capital
Ratio - Asset to Sales
Ratio - Asset Turnover
Ratio - Current
Ratio - Debt
Ratio - Debt Coverage

This is not enough, we will add further on daily bases.