Juki is a lease and loan financial calculator.

There are no structures Juki cannot handle. Here are 10 reasons why you should use Juki:

Personal – Your phone is always right by you. No need to locate and start up your laptop or wait for a web connection to get a quote.

Convenient - Calculate and save quotes on the device. Any time, any place, anywhere with no need for a web connection. Transfer saved quotes when you get a web connection.

Efficient - Send saved quotes directly to other users or your back office with no need to rekey. You can import quotes directly into Solar and other well-known lease administration and accounting system. Solar uses the same calculation engine as Juki so you know you will get exactly the same answers throughout the life of your contract.

Comparable - Produce the same answers as the other popular calculators. Juki calculates either with equal periods or exact days between cash flows. For equal periods Juki uses the same “stub days” approach as other well-known calculators where an interval between dates is not an exact number of months (or quarters, half-years or years). For exact days (and stub days) Juki uses either 365 or 360 days per year. Fix your standard parameters in Settings and know you will get compatibility with other calculators you might have used for each calculation Juki performs for you.

Fast - Calculations are instant and a cash flow report is available to check your drawdown, payment, residual value and commission structures. Every time you change data Juki automatically recalculates either the new payment, yield or net present value.

Flexible - Use any structure including stepped and seasonal payments with fixed as well as variable payments. If you cannot find a way to get Juki to perform the calculation you need then use the in-built Contact form to get help.

Global - Format your date and currency the way you want to see them (UK and USA date formats and currencies are standard).

Supported - Know you are not alone with Juki support. We want to hear from you. Contact for all your support needs.

Bespoke - Load your logo and set your colour scheme and font size.

Free - Try before you buy and save on those annual subscriptions.

Privacy policy:
Terms of use:

What’s New

Version 2.1

New control for decimal numbers

App Privacy

The developer, Copernicus, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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