So of late I've been using the old iPhone with the Walkmeter app (review here) far more than I've been using the Satmap active 10 (review here). Why? A number of reasons but that's not to say that the Satmap active 10 has been made redundant - no way, its an awesome piece of kit!
So where does the Walkmeter iPhone app trump the Satmap Active 10? Firstly its convenient... The iphone is a handy piece of kit, fair play it's not as robust as the Satmap but as we all know it's compact and lightweight and you barely notice it in your pocket the Satmap, whilst not a brick, is considerably larger and is fairly weighty to take out on the hiking trail. What I like most about the Walkmeter app though is the mapping facility. It writes maps directly to google maps and the facility of emailing these or pasting them into google couldn't be easier. I find it also more accurately details the average pace, time walking etc. along with the pace and altitude graphs. It's perfect (or so I feel but haven't yet come across an app to beat it) mapping and diarising your walks.
The Satmap active 10 will always have it's place however. Whilst I've not yet found a way of swiftly and easily transposing the Satmap active 10 maps to my computer or email I wouldn't dream of being without this on anything other than low level pathways and bridleways. It locates with ease where you are and shows your location on an OS map which is imperative when off the beaten track. As this uses satellites too rather than 3g it never has any reception issue which the Walkmeter does when out of reception. I suppose though that the Walkmeter wasn't specifically designed for this kind of thing whereas the Satmap was and in this field it excels. It is a robust piece of kit too so you know you can rely on it. That said I would never ever suggest relying fully on this, it is always necessary to take a map and compass and more importantly know how to use them.
So in summary - Walkmeter app for low level walking and Satmap Active 10 for off the beaten track. Or put another way, Walkmeter to track and record your progress/route, Satmap active 10 as a navigation tool.