Can I pause the screen to read a chart?
Yes. On the settings page, tap ⏸ under the coin boxes. The ticker holds whatever is on its screen for thirty seconds, a ring on the button and a small ring in the corner of the glass count down, and the rotation resumes by itself. Tap again to resume early. Tapping a coin’s badge first puts that coin on the screen; then pause it. See Jump to a coin and the remote buttons.
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What a pause holds still

For a longer look, give every screen more time with the Show Coin for: slider; see How long each screen stays.