The phrase "allow users to collect" is correct and usable in written English.
You can use it when discussing features or functionalities of a system, application, or service that enables users to gather or accumulate data or items.
Example: "The new app will allow users to collect their favorite recipes in one convenient location."
Alternatives: "enable users to gather" or "permit users to accumulate."
Bonga Baraza, expected in mid-2018, will allow users to collect money for purpose driven events, including Kenya's harambee collective fundraising drives.
In the coming months, marthastewart.com, the online division of Martha Stewart Living Omnimedia, will also allow users to collect, share, rate and review recipes with other users on the site.
To scale this experience, Sekhsaria and her team built a mobile app and website that allow users to collect and catalog their own multimedia memories, as well as experience the memories of others.
Tweetbucks and even Amazon also allow users to collect affiliate fees from their Tweet streams.
With the launch of iOS 6, Apple added a new feature called Passbook, which will allow users to collect all of their loyalty, rewards, and payment accounts in a single virtual wallet.
Within the next six months, BodyMedia plans a disposable patch called the Media BodyMedia Vue -- like an oversized Band-Aid -- that will allow users to collect data for a week, and then upload via the built-in USB port.
It behaves like the photosharing website Pinterest – a virtual pinboard that allows users to collect images they like and follow others who have similar tastes.
The interactive site allows users to collect virtual coins through various activities that can then be converted into actual donations to one of three charities chosen by the company.
And Mr. Lee's staff has moved to help another company backed by Mr. Conway, Square, which makes a device that allows users to collect credit card payments on their smartphones.
It is a database driven application that allows users to collect and store the information for each farmer and rancher's assessment of their natural, family, and community resources.
