DAYONE is an app for the MAC, Ipod touch, iPhone or iPad. It is an online diary which is synced up between your devices using iCloud. It works very well, allowing multiple entries per day if you wish, each with its own date and time stamp, full editing facility and just recently enhancements to add photo, auto weather and location tags. Other facilities include export to printer and external file system. The beauty of this is that you can start an entry on the iPAD anywhere, then continue when you get home on the MAC.
I have tried the paper journal, but soon converted to this....
Unfortunately it is only available for MAC and IOS