[dave84]

The Office 365 website offers a free months trial.

[dsaravel]

Ok, but it may be completely different from using the actual app.

For example, GMail app is way slower and irresponsive in the iPad than accessing directly from gmail.com in Safari.

[quanpod]

The trial should let you download and use the real app - not sure if the confusion was because the poster above said "Office 365 website"