The phrase "allows users to check" is correct and usable in written English.
It can be used when describing a feature or functionality of a system, application, or service that enables users to verify or confirm something.
Example: "The new app allows users to check their account balances in real-time."
Alternatives: "enables users to verify" or "permits users to confirm".
Delta also plans a new iPhone app in the coming weeks that allows users to check in for flights and use eBoarding passes, among other features.
Facebook has begun to creep into that territory with Places, a service that allows users to "check in" and share their whereabouts with friends.
Doctor Web, the Russian security firm that first discovered the virus, has created a simple online tool that allows users to check if their Mac has been infected.
The website of the so-called regulator of this area, PhonepayPlus, offers a service that allows users to check the name of the company that has sent them the text.
Researchers at King's College London have designed the London Air app for the iPhone, which visualises air pollution levels in the city and allows users to check how much longer a less pollution-choked route might take.
Even Loopt, which since 2006 has relied on a live tracking approach, unveiled a new feature in November called Pulse, which allows users to check into locations to receive tips and suggestions on things to do nearby.
Byrnes has produced an app that allows users to check-in to places online and express opinions by screwing up the face of an emoji on their screen.
At an event on Wednesday, Facebook unveiled Places, their new location element that allows users to check-in to venues.
Belly, for those unfamiliar, allows users to check-in to a location using a physical loyalty card or app that is scanned at point-of-sale.
The startup officially hit 10 million monthly check-ins and ratinGetGlueeptember, up from allowsrage monthly rate of 5 million ratings and check-ins in previousersntos.
For example, GetGlue allows users to check-in to shows, books, movies and more, earn badges and share this with friends on Twitter and Facebook.
