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Partnering with Businest to build their bespoke accounting application

Working with the founder of Businest, Rhondalyn Korolak, we created an award-winning financial management and cash-flow prediction web application.

reinteractive is the biggest Ruby on Rails development house in the country and has a fantastic reputation in the market, so we were confident that the right number of resources could be assigned to the project. We were very impressed with the level of dedication and care on the project, with development hitting the ground running.
Rhondalynn Korolak, Managing Director, businest

Company Overview

businest is an internationally recognised award-winning application that automates and simplifies cash flow forecasting to free up time and help a business grow profitably. It provides strategies, with step-by-step instructions, to boost a company’s bottom line and cash position.

businest takes financial information from MYOB, QuickBooks or Xero, crunches key performance indicators, predicts your future cash flow and determines which 2-3 strategies will have the biggest impact on your results.


Rhondalynn Korolak, Managing Director of businest, engaged a local agency to begin development in Ruby on Rails. She knew Ruby on Rails offered scalability, robustness and integrated with many accounting packages such as MYOB, QuickBooks and Xero – 95% of the Australian market.

Why reinteractive?

Due to increased resource capacity requirements, Rhondalynn needed Ruby on Rails (and integration) experts to take over the project and drive it home.

reinteractive is the biggest Ruby on Rails development house in the country and has a fantastic reputation in the market, so we were confident that the right number of resources could be assigned to the project. In addition, we were very impressed with the level of dedication and care on the project, with development hitting the ground running — even over the Christmas break.
Rhondalynn Korolak, Managing Director

Building the application

reinteractive took on the project with enthusiasm, rapidly coming up to speed with the project and requirements. Instead of telling Rhondalynn how her app should be, reinteractive found out what she wanted in the app, and then implemented that vision, bringing her plans to life!

The algorithms designed to predict cash flow and financial statements in the future, are based on complicated maths and seasonal adjustments. This means the businest application can look at past income and predict future financials, with a high degree of accuracy. This was one of the main challenges – taking these highly complex accounting concepts and formulas and turning them into an application that anyone can understand and use. You don’t have to be an accountant to understand it.

Cash flow and its prediction, is one of the most difficult tasks in the accounting world. It involves complicated formulas and the manipulation of intricate financial data.

Together with reinteractive's management and development team, each step was broken down and carefully inspected to make sure that nothing was missed.

Clean code, attention to detail, calculation checks and rechecks, and a focus on test code was of utmost importance. Ease of integration with other applications was another focus point. Thanks to the quality of the code and expertise of the developers, this was successfully achieved.

With the complex functionality implemented, reinteractive’s User Experience (UX) expert was brought in to improve the usability of the app.

The reinteractive design team then came on board to streamline the look of the application to create a clean, modern website. Customer feedback on the overall look and feel has been fantastic!

In addition, the businest® app is now on reinteractive’s 24/7 managed service provider OpsCare® which ensures its stability and security with around-the-clock expert monitoring. reinteractive’s OpsCare for Ruby on Rails Apps, built on AWS, was designed to meet the demands of development clients for a complete service, from development of their app through to hosting and managing it, led by an experienced software partner they can trust.

AWS brings with it the highest data security certification available in Australia for cloud service providers from the Australian Cyber Security Centre (ACSC).

reinteractive’s strength is the complete command of Ruby on Rails, attention to detail, speed and efficiency. I know if anything happens, you guys will take care of it. My business is an extension of me and the reputation is very important. The fact I have complete confidence, peace of mind and can sleep at night … it’s huge for me!
Rhondalynn Korolak, Managing Director

The Outcome

The final product is a very simple-to-use application that produces both highly complex adjusted forecasts and actual solutions and advice to increase cash flow.

The businest® app is now live and launched to market, integrating with major accounting packages: Quickbooks, Xero, MYOB and soon to be integrated with Sage meaning 95% of the UK & US market will be covered as well.

The Benefits

  • An internationally recognised award-winning app
  • Integrates with MYOB, QuickBooks and Xero, covering 95% of the Australian market
  • A simple, easy-to-use app that delights customers
  • Peace of mind knowing that the app is in good hands


Since its launch, the businest application has been nominated for and received a number of awards, including:

  • In 2016, businest® was named a finalist in the “$100k Top 10 Small Business Apps Competition” at QuickBooks Connect and won the “The App You SHOULD be Using” at the Meridian Accountex Awards in Las Vegas.
  • In 2017, businest® was named a finalist for “Best Digital Start Up” at the 23rd AMY Awards and the AIIA Awards.
  • In May 2017, businest® was named one of three finalists by Fintech Australia for “Excellence in Data and A.I.” and “Female Fintech Leader of the Year”.

We helped State Library New South Wales build an award-winning transcription editing platform.

Finished in just 4 weeks and ready for launch, we helped realise a project the State Library had been working on for over a year to engage online volunteers to transcribe their historical sound archive collection.

The expertise, the direct communication with the developer and the seamless project management has been fantastic.
Jenna Bain, Digital Projects Leader, State Library New South Wales

reinteractive Services

We build stable, well-tested software, built with Ruby on Rails and Javascript. reinteractive provides a complete solution from project scoping, to UX, design, web and mobile development, through to hosting and maintenance. All driven by our seamless, agile project management processes.

We are experts at large, complex and customised solutions. Bring us your ideas, wish list, integration problem or technical need and we will solve it.

AppWorkshop - Consultation & Project Scoping

We work hard to find the right digital solution for you. Through our AppWorkshop we work with you to identify opportunities and engage in expert planning for business-critical applications. The aim is to get your application delivered and operating as fast as possible, with the viewpoint of incrementally adding features as the site matures and grows.

Learn more about AppWorkshop - Consultation & Project Scoping

Our Guarantee to You

If you are not completely happy with the result of your bespoke development project when we are done, we will give you $10,000 worth of our development time, at no charge, to make it right.

Our OpsCare® and CodeCare® services also have their own simple one month refund and guarantee which you can read in our Terms of Use.

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