Microsoft's Office suite for iPad, iPhone, and Android is now free. From now on, you don't need an Office 365 subscription to edit your Word, Excel, and PowerPoint documents via the mobile app. The subscription is now required only for unlocking advanced editing tools better-suited to business users.
You can download iPad apps for Word, Excel and PowerPoint from here. The new Office apps for iPhone offer the same beautiful iPad experience, optimized for the iPhone. The public beta testing of Office for Android tablet app has been started. You can sign up for the Preview version starting today. General availability is expected in early 2015.
Source: Microsoft blog