The phrase "allows users to exchange" is correct and usable in written English.
You can use it when describing a feature or functionality of a system, application, or service that enables users to trade or share something.
Example: "The new app allows users to exchange messages securely and efficiently."
Alternatives: "enables users to trade" or "permits users to swap".
Also based around meet-ups, it allows users to exchange and accept invitations to casual events.
Scour, a closely held Web site that allows users to exchange films and music online, said on Friday that it had laid off 52 employees, about 80percentt of its staff, after the company was unable to raise additional financing.
So far the best working example of this idea is Cybiko, a Russian-made electronic toy that allows users to exchange messages and play games with other users nearby.
This time, however, most of the signs are that free music may win, man.Napster's software allows users to exchange songs directly, matching them up by maintaining a central who's-got-which-song database.
Unlike WhatsApp, which has a simple interface, Line has built a loyal following by offering a more complex social-messaging service that allows users to exchange messages, play games, give status updates, and send digital stickers, photos, or short videos to friends.
That ruling, by a three-judge panel of the United States Court of Appeals for the Ninth Circuit here, largely affirmed a lower court decision that found Napster, which allows users to exchange music free over the Internet, abets the infringement of copyrights held by the major record labels.
A1 Ruling Against Napster A federal judge in San Francisco ordered the online music service to stop allowing users to exchange copyrighted music owned by the major music labels.
IM was first introduced with text-only chatting capability, but now almost all providers allow users to exchange files, including via their mobile devices.
Sharman Networks Ltd., a company based in Australia, said it had purchased the core assets of KaZaA, a Dutch Internet music service that has angered record labels by allowing users to exchange songs freely.
The Brazilian authorities have also ordered Brazil's Postal Service to develop a national e-mail system allowing users to exchange encrypted messages that would presumably be harder for intelligence agencies to monitor.
Beijing also allows Apple's FaceTime service, which has end-to-end encryption but does not have a WhatsApp-like feature allowing users to exchange secret codes — letting WhatsApp users combat what are known as "man in the middle" attacks.
