The Live Trac software can be monitored from any iPhone, iPad, or Android, Blackberry, or Kindle. RTV20 Garmi Capable ($249.00, various monthly plans available).Three other trackers offer updates every ten seconds, with apps available on both iPhone and Android: The VLS 300 Realtime GPS Tracker ( $239.00, monthly plans starting at $19.95) updates at intervals between one and five minutes. LiveViewGPS offers four trackers for varying budget and application needs.
