The iBike GPS Computer for iPhone 4/4S/5 is a waterproof case with handlebar mount for on a bike or even motorcycle, it's made from black plastic which is sturdy and feels strong. The case detaches from the actual handlebar mount easily with a thumb screw and slides on and off, this means you can easily take the iBike off your bike when coming off your bike without having to take tools with you.
I'll start off with the one bad point, never put your iPhone in if you have a screen protector installed, I put mine in with the invisible shield on the screen. The screen protector sticks to the plastic protector on the case and it makes it impossible to remove the phone. The only way I got mine out was to remove the pin out the hinge and squeeze the sides to try unstick the 2 surfaces. Other than that the case is brilliant.
Now the good points, the app that's provided is intuitive and provides plenty of information while riding, including a map, power, speed, distance, cadence, BPM (if you have a heart rate monitor), wind, calories and more. The setup is long and goes in to great detail but you only have to do it once. As mentioned above, the case is well built and feels extremely sturdy. I have no problem trusting this case to prevent damage to my phone in a crash or in heavy rain.
Another great thing about this case is, you don't need to use the iBike app. This is just a case, no hardware to provide the data to the phone. You could use any fitness app with it, Runkeeper for example is my favourite.
You can also use the screen on your phone while it's in the case, this works great. I've never had it not respond to my input.
The case works with the iPhone 4/4S/5 thanks to a clever sled design. It comes with 2 sleds made of the same material as the case itself. Just put your phone on the sled and slide it in to the case, do up the hatch and you're ready to go. There's no access to the sleep/wake button but there is access to the home button which wakes your display. If you want to use the case all of the time, you can turn on the assistive touch in iOS, this allows you to lock the screen and more.
Overall I'm really impressed with the case, it is my go-to while cycling. Apart from the one downside it works so well. It would have been nice to have the bike computer hardware to make it a little more precise but it's pretty accurate if you input the correct settings. You can purchase this fitness accessory from here. If you're an enthusiastic cycler or just obsessed with tracking your fitness or even a motorcyclist that needs a case, one of these will be ideal!
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Note: Pictures will be added as soon as my internet is fixed.