Quickoffice was purchased by Google around 2 years ago and since then it has been known to be one of the best mobile apps for editing Office files. At the time this app was bought by the search giant, the company explained that "Quickoffice has an established track record of enabling seamless interoperability with popular file formats, and we'll be working on bringing their powerful technology to our Apps product suite". Following this announcement by Google, the Quickoffice app was made entirely free. First it granted free access to business users but later on it was declared free for everyone.
But along with this, Google also removed integration with other services than Google Drive, improved Quickoffice's interface and created a Chrome extension for editing Office files. Moreover, native office editing was also made part of the new mobile apps for Docs, Slides and Sheets.
The recent news states that Quickoffice is now going to be discontinued and mobile apps will be removed from Play Store and App Store. Google has already informed us of this move stating that "With the integration of Quickoffice into the Google Docs, Sheets and Slides apps, the Quickoffice app will be unpublished from Google Play and the App Store in the coming weeks. Existing users with the app can continue to use it, but no features will be added and new users will not be able to install the app.”