(Bloomberg) — Twitter Inc., that posted disappointing
fourth-quarter user growth, gave a startling reason for the
slowdown: Apple Inc.’s new mobile software.

The San Francisco-based association pronounced Apple’s September
rollout of iOS 8, a iPhone maker’s new mobile operating
system, cost it 4 million new users for integration-related
reasons. There was an “unforeseen bug in a recover of iOS 8
as it associated to Twitter,” Chief Executive Officer Dick Costolo
said on a discussion call Thursday.

“We changed on mixed fronts to minimize a impact, but
it wasn’t a one-size-fits-all fix,” Costolo said. A Twitter
spokesman after pronounced a problems were associated to a social
network’s formation with a Apple update, rather than a
glitch in a program itself.

Apple users reported several snafus after iOS 8 debuted.
Some renouned applications crashed some-more often, and iPhone owners
complained about carrying to undo photos, videos and apps to
make room for a new software. The Cupertino, California-based
company released program updates to try to repair a issues.

Apple didn’t immediately criticism on Twitter’s remark.

“The iOS 8 rollout had a lot of glitches, though we don’t
think Twitter was being influenced by a ones that got a lot of
press,” Slaven Radic, CEO of app-developer consultancy
Tapstream Network Inc., wrote in an e-mail. “There was an
intermittent Twitter-specific bug in early iOS 8 where saved
Twitter accounts had to be re-authorized to work, which
basically meant that users had to mislay a Twitter comment and
re-add it.”

Key Measure

Twitter’s monthly active users rose 20 percent in the
December entertain to 288 million, reduction than a normal analyst
estimate for 22 percent growth, according to information gathered by
Bloomberg. Investors have focused on that magnitude to sign the
Web company’s expansion as it works to supplement promotion income and
new products to strech profitability. On a call, a company
also cited “seasonality” for a slower user additions.

“We apparently have a good attribute with Apple,”
Costolo pronounced on a call.

Aside from a slower-than-estimated user growth, the
microblogging association posted fourth-quarter income that topped
estimates and foresee that a series of new users will pick
up. Revenue increasing 97 percent to $479.1 million. Profit
excluding some equipment was 12 cents a share, compared with an
average guess of 6 cents. The net detriment narrowed to $125.4
million.

Twitter pronounced Thursday it expects to supplement 13 million to 16
million users in a initial quarter, identical to a series it
added in a early partial of 2014. That would prove sequential
user expansion of about 4.5 percent, compared with 1.4 percent in
the before period. The association finished a fourth entertain with 288
million users.

To hit a reporters on this story:
Sarah Frier in San Francisco at
[email protected];
Tim Higgins in San Francisco at
[email protected]

To hit a editors obliged for this story:
Pui-Wing Tam at
[email protected]
Brendan Scott, Dave McCombs