Best GPS tracker for my bike?

I've got my bike stolen twice. Anyone know a good gps tracker with a long battery life and is compatible with my iphone? Price range 10-150 dollars

A good lock is better then any tracking device.

Got to a bicycle shop for help. They should be able to best advise you and install it. You're wise to install a tracking devise. Locks and alarms are theft prevention devices. Tracking chips however are a recovery device. Even with the best of locks bicycles do get stolen. Locks, a tracking chip and an alarm is the best prevention and recovery system.

Trackers can be thrown away, batteries die, out of cell signal range.

get a good lock and quit leaving in thefty locations for long periods