src/ShopifyApp/Models/Charge.php
public function remainingTrialDays()
    {
        if (!$this->isTrial()) {
            return;
        }

        return $this->isActiveTrial() ? Carbon::today()->diffInDays($this->trial_ends_on) : 0;
    }
public function remainingTrialDays()
    {
        if (!$this->isTrial()) {
            return;
        }

        return $this->isActiveTrial() ? Carbon::today()->diffInDays($this->trial_ends_on) : 0;
    }
Returns the remaining trial days.

@return int