Customers needed an Office 365 subscription to create or edit Office documents in Office for iPad. As more customers asked for more flexibility in signing up for Office 365 subscriptions on iPad, Microsoft today announced a monthly subscription to Office 365 which anyone can buy from within Microsoft Word, Excel, and PowerPoint for iPad. They can choose between Office 365 Personal and Office 365 Home. Office 365 Personal is designed to help individuals who want to use Office on one PC or Mac and one tablet, while Office 365 Home is for households with up to five PCs or Macs, plus five tablets.
These new In-App subscription changes are great options for those who prefer the flexibility of monthly payments. Existing customers, who have purchased Office 365 Home for one year, will continue on the same subscription. If you buy a monthly subscription on your iPad, you can switch to an annual subscription from your iPad, or from iTunes on your PC or Mac.
Read more on it here.