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It has persuaded venture capital firms including General Catalyst, IVP and Spark Capital to support its platform, the BBC said.

Grammarly was founded by residents of Kyiv, Ukraine, Alex Shevchenko, Max Lytvyn and Dmytro Lider in 2009 and the first version of the software was developed in Kyiv, according to the Ukrainian-based economic news portal Ekonomichna Pravda.

Read alsoUkraine's IT boom could speed up EU integration - EU ObserverThe Grammarly team now numbers more than 100 people, and the number of active users is 6.9 million people per day.

The software features spell-checking, proof-reading and plagiarism detection tools, scanning text for the correct use of more than 250 advanced grammar rules.

Grammarly representatives claim that over 14 billion suggestions to improve texts were given to users in April 2017 alone. The company is headquartered in San Francisco, its third office opened in New York not long ago.

Read alsoUkraine to launch big blockchain deal with tech firm Bitfury - Reuters"But not everyone sees the need for Grammarly. One online reaction posted to the announcement of the firm's venture round was: 'I rather learn to write without mistakes than let a program correct it' (perhaps inadvertently proving its usefulness)," the BBC wrote.

"On the other hand, Grammarly's efforts provide no guarantee that your prose will be a joy to read. Its own website contains the sentence: 'Enhance your sentences with Grammarly's context-optimized word choice suggestions to instantly improve the readability of your document.' Clearly split infinitives are safe from the software's forensic gaze," BBC News business reporter Robert Plummer adds.