Gummicube: San Jose app marketing startup Gummicube was acquired by a Portland firm

Gummicube Inc., which helps companies market their apps on Apple's App Store and Google Play, has been acquired by a rival company. Airship Group Inc. purchased the San Jose startup in a deal the companies announced Wednesday. The Portland company offers a service that helps companies send messages and alerts to their app users to keep them engaged and increase revenue. Airship and Gummicube see their services as complementary. "Together with Airship, we're solving a more complete problem for...