Kollabra

Kollabra provides systems engineering, mechanism design, automation, web applications, desktop applications, and mobile apps services. The job it does: designing and building iOS and Android apps.

Who is it for? Mostly businesses launching or rebuilding an app. Related areas on their profile: Mechanical Engineering and Mobile Apps. 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.

Kollabra is based in Auburn, California. More on kollabra.com.

Things worth asking about: portfolio quality, app store experience, and maintenance terms. Ask for a trial on your own data, not a canned demo.

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