The best replacement for heart rate monitor is fitbit.

The best alternatives to heart rate monitor are rated as following:

★★★★★	fitbit
★★★★	bodybugg
★★	pedometer
★★	activity tracker
★	power meter
★	polar
★	fitness tracker
★	nike fuel band
	pulse oximeter
	blood pressure monitor
	calorie counter
	gps
	body bugg
	strap
	wrist
	gps watch

Your alternative for heart rate monitor is not listed? Suggest!

Speaking about heart rate monitor, one probably shouldn't forget about calorie counter.

Other search terms related to heart rate monitor and their ratings are:

★★★★★	calorie counter
★★★★	chest strap
★★★★	pedometer
★	fitbit
★	watch
★	iphone app
★	interval timer
	calorie count
	altimeter

You have in mind a companion for heart rate monitor and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of heart rate monitor in all years. Click on graph for more.

heart rate monitor

fitbit

bodybugg