The best replacement for chatterbox is scala rider.

The best alternatives to chatterbox are rated as following:
★★★★★  scala rider
★★★★  scala
★★★★  sena
★★★★  collett
★★★  uclear
★★★  pink nouveau
★★  blinc
★★  cardo
★  impassioned
★  scala q2
★  scala g9
★  please me
  speed dial
  viva glam nicki
  nady

Your alternative for chatterbox is not listed? Suggest!
Speaking about chatterbox, one probably shouldn't forget about lazlow.

Other search terms related to chatterbox and their ratings are:
★★★★★ lazlow
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Google Trends

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