ACF field counter snippet.

acf-field-counter.php

<?php
// get the count on the repeater field
// mabye use get_sub_field() instead of get_field() if it's nested
$count = count( get_sub_field( 'the_field' ) );

// begin $count conditions
if ( $count > 1 ) { ?>
  // greater than 1
  <?php the_field( 'great_than_1' ); ?>
<?php } else { ?>
  // less than 1
  <?php the_field( 'less_than_1' ); ?>
<?php } ?>