Hello! I'm developer of BlindSquare. There is no try-and-buy option
since TTS costs always. You can still use Apple's returning policies,
there is always possibility to return app and get money back.
About what BlindSquare does: It reports automatically street addresses
while you walk, next street crossing, automatic pedometer reading
("you have walked 700 meters in 7 minutes") and reporting of nearby
places by categories (it automatically picks most popular places
within selected radius, based on foursquare check-ins). This all
happens just by launching the app so it takes no time to start using
the app, even if you don't use FourSquare yourself.
If you take phone out of the pocket, you can search categories, set
reporting certain category on/off, "look around" (you get information
what kind of places and what street crossings are in different
directions), search with free search term, view information of places
(name, address, phone number, www-site, twitter feed), start
navigation to the place or do foursquare check-in.
When you jump into the bus, BlindSquare automatically notices it and
starts reporting street crossing while bus is making a turn so you can
keep track where you are.
You can also add placemarks for yourself. They are synced to iCloud so
if you have several devices (for example iPad + iPhone), you always
get informed when you get near that place. Some users use this to give
warning about bus stop they need to get off.
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