Microsoft Corp. is all set to buy London-based smart-keyboard maker Swiftkey for about US$250 million, according to a UK financial daily.
Swiftkey co-founders Jon Reynolds and Ben Medlock, who started the company in 2008, are estimated to both make about US$30 million each on the deal, according to the UK paper.
The deal is expected to be announced this week.
Microsoft said it has "nothing to share at this time" and SwiftKey declined to comment on "rumors and speculation."
SwiftKey has been one of the most popular keyboard apps on iOS and Android. It launched on Android in 2010 and came to iOS in 2014.
Microsoft may be more interested in SwiftKey's research into artificial intelligence, reports the UK paper.
SwiftKey recently launched an Android keyboard that uses a neural network instead of its standard algorithms when predicting words, according to reports.
Microsoft has been buying up talented developers and popular apps, like Sunrise and Acompli, as part of its shift to a strategy of providing services across devices and platforms.