About AccurateCalculators.com

We released our first program as shareware for the new Apple IIe through a single store in March 1983. As you might have guessed, it was a loan calculator— it sold exactly zero copies.

Encouraged by such unbridled success, we decided to write a series of financial routines for the new IBM PC. These 22 routines were released in two parts in late 1984 as Finance I and Finance II. At the time, we had little money to market them, so sales were slow. Consequently, we used a shareware model to release them in late 1985. (One disk vendor that we know of was still distributing them as late as 1995.) Around 1987, the routines were completely rewritten, combined into one program, and released as SolveIT!, The Financial Calculator v2.0. The program has been updated several times and has sold tens of thousands of copies. Bargains for Business, a feature in The New York Times, called SolveIT! "surprisingly fast." In 1992, it ranked as the 40th best-selling shareware title out of thousands, according to an independent survey of shareware disk vendors.

In 1990, we released a subset of the then-32 calculators included in SolveIT!. The new program, known as AmortizeIT!, The Complete Loan Solution, included six calculators from the loan section of SolveIT!. Its last significant update was in 2010, and it was discontinued in 2023.

Loan*Calculator! Plus, our first program for Microsoft Windows, was released in 1995. In 1996, it received a "Best-of-Category Award" from PC Computing Magazine in their July 1996 issue. Lease*Calculator! Plus followed as an upgrade, adding three calculators (or advisors) not found in Loan*Calculator! Plus. In October 2003, Lease*Calculator! Plus v2.6 was retired and replaced by AmortizeIT! v3.0.

Rapid*Address!, another free-for-noncommercial-use program, was released in July 1998. It was retired in 2003 because it diverted our focus from financial software development. It inserted address information into any program: you entered a ZIP code into a pop-up window, and Rapid*Address! did the rest.

In 2003, we introduced our most flexible financial calculator: C-Value!–The Cash Flow Calculator (now known as Ultimate Financial Calculator). C-Value! allowed users to customize loan payment schedules to meet their needs; it also tracked payments and calculated a penny-perfect payoff amount.

Here is a reference from FindMySoft to these programs. (Support is no longer provided.)

In 1996, we entered the online world. After launching our website, pine-grove.com, downloads and sales of our calculators increased. The site expanded over the years. Around 1998, we launched our first browser-based calculator— it was, unsurprisingly, a loan calculator.

The websites have been continuously updated since 1996. In 2016, the site underwent a major redesign and moved to the domain financial-calculators.com. Then, in 2022, we began modernizing the site with current web technologies, and in 2023 the update was completed and the calculators moved to AccurateCalculators.com. In May 2023, SolveIT! v7.0 was released, and C-Value! v3.0 was rebranded as the Ultimate Financial Calculator. See subscriptions for details.