tApCalc Finance is a Pocket PC Financial calculator featuring a virtual Paper tape. Many keys for calculating Time Value of Money, Discounted Cash Flow, Depreciation, and Bond Calculations are available in addition to standard calculator keys. The paper tape allows recording calculations that can be Saved, Edited, Re-run with edits for operators and numbers. Calculations can also be Beamed to another PDA or received through IR.

The Keys supported are:
- Memory: M+, MR, MC
- TVM : PV, NV, PMT, n, i, nx12, i/12, Amortization, Begin, End, RCL
- DCF: keys, CF0, CFj, Nj, IRR, NPV
- Depreciation: SL, SYD, DB
- Bond: Price, YTM, p.Dt,m.Dt
- Thousand grouping
- Regional number formats
- Scientific operators
- Send and Receive calculations through IR
- Print Calculations (requires PrintPocketCE to be installed)