Save development time and instantly deploy logic to your fintech apps no matter how complex your spreadsheet calculations are.

A travel reimbursement claim app that eliminates busywork

Tracking the travel expenses of multiple employees used to take hours out of Dev’s day. Now it only takes minutes thanks to an app he made that helps him track every journey, calculate reimbursement values, and streamline his workday.

Our powerful REST API and documentation enable you to effortlessly integrate with your existing software such as...


The benefits of Sparklite as an API builder

Build without Code

Build without Code

Convert any Excel file reliably without writing a single line of code.

Highly Flexible

Highly Flexible

The Sparklite Fintech API builds anything, no matter how complex your spreadsheet calculations are.

Easy Integrations

Easy Integrations

Use any of your favorite apps, platforms or experiences to connect your dynamic API.

Faster Time-to-Market

Faster Time-to-Market

Get your fintech apps deployed faster by reducing development effort.

Increased Productivity

Increased Productivity

Spend more time on growth strategy and less on resolving technical API challenges.

Reduced Cost

Reduced Cost

Reuse your APIs across different apps to generate revenue on multiple fronts.

Remove Technical Coding Barriers

Open Up App Development and Management to Non-coders

“ As a new start-up, we don’t have the funding to support a long product development process. We need to be scrappy and be able to release quick MVPs to get user feedback. Excel is great for prototyping different features and SparkLite is great at enabling us to integrate those spreadsheets into our core product experience! A great combination for launching MVPs quicker to market! “

David Marshall

Product Manager

Start in a few minutes.

Create APIs fast, integrate anywhere

Enhance your application by transforming complex spreadsheet calculations into running APIs

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How it works

Easy to use. Without code.


Follow the instructions for mapping your Spreadsheet inputs and outputs variables.


Upload your spreadsheet to SparkLite


Follow the integration instructions on Sparklite and add SparkLite API as an action into the workflow of your app


Get your API endpoint.


Get the output.

Ready-to-use Sample Files

Learn about our simple mapping process. Next, upload the file into Sparklite to see the API created. You can integrate right away.

Simple Mortgage Calculator

This Excel Spreadsheet makes it easy to visualize Loan amortization with monthly payments.

File complexity: low File complexity: low
Lease or Buy A Car

Calculate depending on your car’s price or lease value to find out which option is the most

File complexity: medium File complexity: medium
Capital Budget Model

Determine your total and net investment value by changing the values of your inputs – Initial Investment, Opportunity Cost, Salvage Value, Tax Credit and Working Capital.

File complexity: high File complexity: high