A Few Testimonials

What Our Customers Say...

It's not our style to brag. But we keep hearing from our dealers, "More companies should know about Cornerstone!" So we asked for a few of them to put their opinions in writing. You'll notice some recurring themes.

Give us a call at 224.577.1197 to see if we are the right fit for you.

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Lee Kennetz - Inner Security Systems

“In a nutshell, customer service sets them apart from the rest. If you have a question, they respond right away. We don't have to wait to fix the problem. They are always there when we need them. Plus, the software is easy to use! That alone is worth its weight in gold.”

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L. Ben Ayers - Guardog Security Services

“I like that there is flexibility in the software's features to run our business seamlessly. The mobile app has made my job much easier because the techs can complete jobs and invoice in the field, reducing office work! Billing Plus is great too, it makes it easier to stay on top of slow payers with a text. And, their customer service team is beyond anything we've ever worked with!


Mike Georgopulos - Specialty Alarm Engineering, Inc.

“I have been in this business for almost 20 years and we have continued to grow as a small business. We made the decision to switch to Cornerstone after the program we were using became outdated.  I was very nervous going into it because I don’t like change. It was honestly one of the best business decisions I ever made. The program itself is slick in every way. Recurring charges, credit card processing, and the report features are a few of the things I love about the program. Most importantly, their customer service and tech support is outstanding. The training never stops. They will hold your hand until you understand everything.  I highly recommend Cornerstone.”



Barbara Feldman - Pioneer Security Systems

"Cornerstone has been a pleasure to work with. I'm so glad we made the switch from Quickbooks. The software is easy to learn and use, and their staff is outstanding!

What's not to love about not handling printing, mailing, or posting payments? We also use Cornerstone's Billing Plus to track down slow-payers and we have the BEST LOOKING aged accounts receivables ever!"


By the numbers...

On top of our partners who love our services, we have the numbers to back up our success. From a modest start in 1999, Cornerstone has grown to accommodate hundreds of dealers, thousands of invoices, and millions of dollars with 100% accuracy.


Ready to improve your workflow and organize your office?

Get started by clicking contact us below, or, take our video tour at your own pace to see if Cornerstone is the right solution!