Approximatrix

Approximatrix provides a range of products and services to help individuals and organizations increase productivity. Put simply, it is about designing and building iOS and Android apps.

It makes the most sense for businesses launching or rebuilding an app. Alongside the main category they mention Open Source and UX Design. As a very small company team themselves (1 to 10 people), they tend to serve customers of a similar scale best. Small vendors mean quick answers and real influence on the roadmap, but check who covers support when someone is out.

Approximatrix is based in Westlake, Ohio. Their site is approximatrix.com.

Things worth asking about: portfolio quality, app store experience, and maintenance terms. A short pilot with your real data tells you more than any demo.

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