"We are collecting and occasionally updating the list of apps installed on your mobile device so we can deliver tailored content that you might be interested in," Twitter said in a blog post.
Only lists of applications are being gathered, with no prying into what is being done with those mini-programs, the San Francisco based company said.
The types of applications Twitter users have on their phones and tablets will be used for purposes such as recommending who they might like to "follow" at the service, as well as for targeting ads spotlighted as promoted content.
Twitter users can prevent their app lists being harvested by activating the "Limit Ad Tracking" or "Opt out of interest-based ads" features on Apple or Android mobile devices respectively.
The tactic, which is used by some other ad-supported Internet services, is being added to Twitter's toolbox as the company strives to ramp up revenue and engagement by users.
(Also see: How to Stop Google From Tracking You on the Web)
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