Android users can set a pause button on Pacer Android, to manually stop Pacer app from counting steps. But if you use a 3rd-party device/app as data source, the pause button will be hidden.
To make the pause button shown on Pacer home page, please set phone as the primary data source first.
Please go to Pacer Home page (tap the shoe icon, please) > tap Settings gear next to the dashboard:
1. Set "Steps Data Source" as phone.
2. Turn on "Show Pause Button".
Go back to the home page. Press Pause button to pause Pacer from counting your steps.
Remember to activate Pacer later on! Tap the pause button again, to resume step counting!