Phil Schiller, Apple's senior vice president of marketing, is upset that Instagram has launched on Android, claiming the service "jumped the shark." Schiller has deleted his account.

After expressing his anger on Twitter, Schiller deleted his Instagram account - @schiller - as a user contacted him over the social network.

There's no specific reason why Schiller stopped using the service, but as an iOS exclusive Instagram was a big pull for users. The app won "app of the year" in Dec. 2011 in Apple's iTunes Rewind program, and has been featured in ads. Schiller runs marketing at Apple, so was likely frustrated when the service launched on Apple's biggest rival.

A 9to5mac reader - Clayton Braasch - contacted Schiller via e-mail after the Twitter post, where he clarified his position:

"Instagram is a great app and community. That hasn't changed. But one of the things I really liked about Instagram was that it was a small community of early adopters sharing their photographs. Now that it has grow[n] much larger the signal to noise ratio is different. That isn't necessarily good or bad, it's just not originally what I had fun with."

The photo-sharing app has been incredibly popular on Android since launching, gaining 10 million users in 10 days. It took 19 months for the iOS app to gain 30 million users, though the app wasn't nearly as popular when it first launched on iOS.

That's an increase of users using the service by 25 percent. Instagram is currently No. 10 in the Top Free Apps category on Google Play, while No. 6 in the same category on the App Store.

Whether this is a parting shot at other apps making the switch is unknown, but Apple rewards successful apps by featuring them in its advertisements. Instagram likely won't get that publicity on Android, but anyways, it will continue to grow.

Meanwhile, many Instagram users have stopped using the service, with services such as Instaport allowing former users to preserve photos without relying on Instagram.

Instagram was recently acquired for a billion dollars by social networking giant Facebook.

(reported by Jonathan Charles, edited by Surojit Chatterjee)