Cornerstone

Cornerstone is an IT company that provides systems engineering, applications development and consulting services. The job it does: designing and building iOS and Android apps.

Who is it for? Mostly businesses launching or rebuilding an app. They also list Consulting and Project Management, so expect those to show up in the feature set. As a small company team themselves (11 to 50 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

Cornerstone is based in Tallahassee, Florida. More on consultwithus.com.

Our checklist for this category: portfolio quality, app store experience, and maintenance terms. A short pilot with your real data tells you more than any demo.

Every review on Revaw shows how it was verified, so if you know Cornerstone well, your review carries weight here.