iOS/Android: There's no shortage of mobile travel guide apps, but most tend to originate from independent publishers. The YourSingapore app takes a different tack, coming directly from Singapore Tourism.
The obvious upside of that approach is that you don't pay for the app, but the potential downside is you're less likely to hear honest criticism of sites, restaurants or hotels. One other unusual feature of the app is a tie-in with a local tourism discount card that gives you cheaper IDD calls and free data access (though you have to pay for the card first).
Would you be happy getting a free app from the local tourist provider, or would you rather pay for independent information? Tell us in the comments.