iPhone cyclecomputer aps vs. real cyclecoms. Recommend apps too, please.
 

Interested in using my iPhone for cyclecomputer.

1. Any app recommendations?
2. What would be better/more accurate iPhone app, or real cyclecomputer?
3. Do you have to input wheel sizes with iphone apps, or it just reads your speed from space?

Cyclemeter App all by itself works great if you don't need cadence or heart monitor.

Cyclemeter app and a wahoo ANT bike pack for iPhone 3-4 will get you a more accurate speed and cadence sensors. A heart monitor is also available.

If you have an iPhone 4s, Cyclemeter app and blue smart sensors. Cadence, speed and heart.

If you have the 4s the setup is cheaper and it uses less of your iPhone battery.
I have the Ant bike pack on my hybrid and love it. and I'm putting the blue smart sensors on my road bike when it arrives.

There is an extended iPhone battery that connects to the phone mount available.

I like it because I always Cary my iPhone with me anyway.

Do a search for "wahoo bike sensors for iPhone"

Strava, RidewithGPS, MyTracks. I use Strava. They both offer advantages, but just use a free app til you figure out what you really want.