I bought Splashtop to compare iTeleport. My conclusion is that these apps compliment each other, rather than compete.
Unlike Splashtop, iTeleport connects over 3G as well as WiFi, so you can remotely connect to your computer away from the home or office network. iTeleport also an infinitely better UI when it comes to controlling your computer at full resolution (which Splashtop doesn't do).
Where Splashtop excels is in the simplicity of the app. Splashtop had no problem finding my computer on the network, and when it connected it automatically changes the computer resolution to optimize with the iPad. Mousing used the direct touch option (where you touch you click) - this feels strange after using iTeleport, but it is a good option for simple tasks.
The wireless network I am testing on is not my own, is notoriously slow as it supports over 40 connections, and also has several firewalls and other security controls. None of these affected Splashtop which ran at an astounding speed, however, iTeleport could not establish a connection.
Even if you already have a VNC remote app such as iTeleport, Splashtop is absolutely worth adding to your app collection and is a perfect compliment to a VNC remote app.
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