Mobile app usage: active all day, spikes in prime time

Just like TV, mobile usage is highest during prime time, peaking at 9 p.m., according to Flurry. But just as important is the fact that mobile app use is relatively higher throughout the day than both Internet and TV, only eclipsed by TV in prime time.

Urban Airship hits 5B notifications as engagement reigns

For mobile developers looking to engage their users, push notifications have become a key tool in drawing users back into apps. Notification provider Urban Airship told me it has hit 5 billion push notifications since it delivered its first message a little over two years ago.

Early earthquake warning pops up in iOS 5 beta

A new feature has appeared in iOS 5 in Japan: It’s a built-in notification system tied to Japan’s sophisticated early-earthquake-detection service, which can provide between a few seconds and a couple of minutes of advance notice prior to an earthquake’s actually hitting.

Facebook gets into texting game with Facebook Messenger

Facebook has already started to supplant traditional email providers as a dominant way that people communicate online. With a new standalone mobile app called Facebook Messenger with SMS-like functionality, the social networking giant is poised to delve even deeper into users’ mobile messaging activity.

Azumio collects $2.5M to turn smartphones into health monitors

Azumio, a mobile health startup whose first app, Instant Heart Rate, was downloaded 8 million times, has just raised $2.5 million from Founders Fund, Accel Partners and Felicis Ventures. It shows that there’s a lot of opportunity ahead in mobile health applications.

New Localicious app shows why some devs prefer Android

WhitePages’ new local discovery app is launching on Android first, in part because the platform allows it the ability to better track the efficacy of location-based ads. It’s another sign that Android is appealing to more developers.

Crittercism rides the growing mobile app services boom

Crittercism is getting in on the booming market for app support services with its user diagnosis and support tool, that helps developers track app crashes and address user complaints and bug reports. The company announced new funding from Kleiner Perkins, Google Ventures and others.