We've been using this app for a number of years now and it's quite honestly the only app I've found that could support our complex pricing structure and product options. Support is also very helpful and Roman is very responsive and quick to resolve any issues we've faced. Highly recommended!

Does exactly what you need it to do, and unlike other apps it works with multiple currencies. Great support provided, including walking you through how to set up your options. If anything is not clear, support is provided until your options are working as intended. Once you have learned how it works, it is intuitive. Thoroughly recommend.

Brilliant variation of software. Very customisable. Reasonably easy to use. But most importantly, support is SUPER SUPER fast and they get things done..

Great app with a unique functionality that helps us create customization options that no other app we've found has been able to. Additionally the support provided has been very helpful and prompt as we've worked through set up.

This app and the customer support have been amazing. I have had a few things I couldn't figure out. They have walked me through all my issues and get me where I need to be. Thanks

I am not sure what's better, the app or the customer service! I would leave 100 stars if I could. After days and days of searching for an app to perform according to my needs (a complex inventory, conditional logic, several options for price adjustment, etc) I found this one and it does it all! I have had several questions and help requests and the team at DPO has been outstanding. They have gone above and beyond and even offered to check that the app was integrated properly into my theme. Exceptional customer service. The app has a basic interface but handles complex situations beautifully -- and you will appreciate its simplicity. Thank you DPO -- I am so grateful I found your app!

I tried several solutions to address the issue with dynamic options, but none of them worked as expected. Then I discovered this app, and after receiving quick and exceptional support, everything fell into place. Now, my store runs seamlessly and looks fantastic. Highly recommended!

Wow these guys are absolutely amazing with their support and helped me a lot during the setup and customization. I have used other calculators apps before for customized items, but this one is really different!

We have been using this app for a number of years, we recently refreshed our site and ran into some errors with a new theme. We contacted support and Roman was very quick to resolve the issues for us! Once you get your head around all the settings, its a fantastic app that offers so many variants! Highly recommended!

We needed many type of options and real complex pricing, not basic mathematics formulas, but a lot more complex, expecially nested conditions and ternary expressions. DPO is really the best for it. Support team is pro and reactive. Thanks Roman ;-) Sebastien