I love my iPhone and many of the apps.... but phone calls are what the phones were made for... and what they do best. I use the less popular (and far cheaper) elite cycling app to track my cycling. It's not perfect! If feet/meters climbed, or mile/kilometers cycled was REALLY important... I'd use something other than a phone app to track my data.

But as a non-competitive... unracer... the cycling app gives me a wealth of data for a handful of dollars a year. And I no longer need to transcribe to a clipboard and later type/enter it into a document. That hassle is gone! And everything is automatically backed too.

P.S. I still run bicycle computers on a couple of my bikes. I like being able to see the speed, time, and such when riding. And I keep my phone in my jersey pocket. AND... it's nice to NOT have a modern computer mounted on a vintage bike... yet still collect the (albeit less than perfect) data via the phone app.