The best replacement for ft4 is ft7.

The best alternatives to ft4 are rated as following:
★★★★★  ft7
★★★  ft40
★★★  ft6
★★★  t4
★★  ft60
★★  ft4f
★★  fitbit
★  ft7 polar
★  ft7 polar watch
★  polar ft7
★  ts4
★  ft1
★  ft3
★  rs100
★  ft5
★  ft7 heart rate monitor
★  rs300x
★  suunto m2
★  ft20
  ft4m
  aw100
  ft2
  ft7 polar heart rate monitor
  tg1
  vw 1
  f6
  polar rs 100
  fitbit flex
  polar ft40
  d20
  vw-1
  polar f6

Your alternative for ft4 is not listed? Suggest!
Speaking about ft4, one probably shouldn't forget about normal tsh.

Other search terms related to ft4 and their ratings are:
★★★★★ normal tsh
★★ low tsh
You have in mind a companion for ft4 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ft4 in all years. Click on graph for more.
ft4
ft7
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