Apple (Nasdaq: AAPL) has turned on its iTunes Match service — although it’s two weeks late.

The $25-a-year subscription promises to match every song on a person’s computer and store the tunes in an online account on distant servers known as the “cloud.”

The songs can then be downloaded or streamed to other Apple devices without needing to physically connect them to the computer.

Michael Muchmore, writing a review at PC Magazine, tried out the service and liked it.

“From the early days of just being able to sync a device to one computer, we’ve progressed to a much happier situation in which we can get all our music from multiple devices and computers,” he wrote.

“And the absolutely unique capability of not requiring you to upload all your music has Google and Amazon beat on at least this one measure, not to mention that you may get higher sound quality than your original copies. If having high-quality versions of your all music available to you on multiple iTunes-capable devices is important to you, as it is to me, iTunes Match is one of the best 25 bucks a year you’ve ever spent. It’s the final, and critical piece of iCloud’s music services.”

However, a blogger at ZDnet was not as impressed.

“I started matching my iTunes library at around 2pm Monday and let it run until around 8 pm and it hadn’t made a dent – 1631 of 6371 items uploaded,” he wrote.

Songs that are not recognized can be uploaded automatically. The service promises to function with multiple computers used by the same person by eliminating duplicates.

Apple Inc. declined to comment on the delay. Earlier it had said iTunes Match would be available by the end of October.

An earlier message on iTunes saying new accounts were not being accepted was posted in error and has since been removed.

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