Interesting, given the recent flap over Google Voice for iPhone, which Apple (AAPL) hasn’t yet allowed into its iTunes App Store because it “appears to alter the iPhone’s distinctive user experience by replacing the iPhone’s core mobile telephone functionality and Apple user interface with its own user interface for telephone calls, text messaging and voice mail.”

How is Vonage’s (VG) app different? Its features and functionality are certainly very similar to those of Google Voice.

Apple won’t say, but the company did tell the Associated Press that Vonage’s app falls under the same category as other VoIP applications that have already been approved for the iPhone.

“We’re thrilled to announce that we have a deal with Apple to bring the iPhone to Canada later this year,” Rogers chief executive Ted Rogers said in a statement just full of details. “We can’t tell you any more about it right now, but stay tuned.”

Good news for Rogers, which had suggested prior to the iPhone’s launch it would offer the phone in Canada, but was later forced to admit it hadn’t yet inked a deal with Apple.

Good news, too, for Canadian cellphone users. Particularly if Apple was able to wring a substantial reduction in wireless plan charges from Rogers–which, like all Canadian carriers, is notorious for its exorbitantly priced data rates. In the U.S., AT&T’s (T) combined iPhone service and data plans start at $59.99 for 450 anytime minutes, 5,000 additional night and weekend minutes, and unlimited data. A comparable plan from Rogers Wireless runs about $295 per month. And while the company recently began offering an “Unlimited On-Device Mobile Browsing Plan,” it doesn’t apply to BlackBerries, Windows Mobile devices or other smart-phones.