It's a pain to keep updating calendar programs that live on multiple computers, even if you only use one type of computer, and even with the help of a PDA or smart phone, like my Palm Treo. And it gets far worse if you use both Windows PCs and Macs, or if you'd like to occasionally rely on public computers or borrowed computers on the road.The two programs seem to be fairly equivalent in features, however Trumba OneCalendar costs $39.95 to subscribe for the year, whereas AirSet is free. (Yet amortize the cost of a good PDA, and even that fee turns out to be a good deal.)
One nice feature:
Reminder emails for appointments can be set up on both programs...AirSet emailed us daily reminders of the next day's schedule every evening at the same time. Currently, AirSet and Trumba offer to send free reminders to your cellphone using text messaging, and AirSet can also send free daily schedule summaries using the same method.I've started using AirSet already.