iPhone battery health: How to check it on your own - CNET
How to use COCONUT BATTERY – Macbook Pro Retina Battery's Health Checker | P&T IT BROTHER - Computer Repair Laptops, Mac, Cellphone, Tablets (Windows, Mac OS X, iOS, Android)
Check iPhone Battery Cycle Count using CoconutBattery
Extreme discrepancy between CoconutBattery and Settings -> Battery Health | MacRumors Forums