I reviewed the $4.99 Tokyo guide, and the map detail and GPS link-up and it does not work very well. So this guide for Singapore really has just a bunch of places, and photos of landmarks.
+ the concept is great, self guided walking tours with photos are a great idea
+ free is the best price, get a free map of Singapore, and plot out where you need to go and do it yourself
- there is a lot of duplication, landmarks like the Civilizations museum appear in three separate tours
- there is a lot missing, no Fort Canning Park and nothing on Little India
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