Par
The financial calculator that cites its sources.
An offline financial calculator for people who must have one: loan officers, mortgage and commercial real-estate underwriters, treasury and fixed-income desks, and candidates studying where only a financial calculator is permitted. Ten tools cover time value of money, amortization, bonds, cash flow, day count, depreciation, percent, rate conversion, real estate, and statistics — and every displayed number traces to a cited authority.
What's inside
Ten tools: TVM, amortization, bonds, cash flow, depreciation & more
Every result cites its authority — US Treasury, CFPB Reg Z & DD, IRS, NIST
A running tape of your calculations you can review and save
One-time purchase · no ads, no subscription, no account, no network
No account, no tracking, no data collection. Par works fully offline.
Questions
Does Par work offline?+
Yes. Par runs entirely on your device, so it works with no internet connection.
Is there an account or subscription?+
No. There's no sign-up, no login, and no subscription — just download Par from the App Store and open it.
What data does Par collect?+
None. It collects, stores, and transmits zero personal data — nothing ever leaves your device.
Which devices are supported?+
Par is available for iPhone, iPad & Mac.
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Get Par
The financial calculator that cites its sources. On-device, no account, no tracking.
Download on theApp Store