Sure you can use your phone but there are definite trade-offs. Bike computers like those from Stages are cheaper, smaller and more accurate (with sensors). They also have a better battery life, not to mention durability. These babies are designed to take some serious punishment.
11 products found in BIKE COMPUTERS
Ryder Innovation Tag Outfront Mount
R 350.00
Titan Cycle Computer T10 Wireless
R 490.00
RYDER COMPUTER 13 FUNCTION WIRELESS
R 399.00
Giant Computer Axact 6 Wired
R 350.00
Thinkrider Bluetooth Heart Rate Monitor
R 999.00
Ryder Innovation Tag Outfront Mount XCross Comp G+ GPS Kit