Zapof payment gateway lets you set up subscription billing with options to choose billing frequency (daily, weekly, monthly or yearly), number of intervals between each subscription billing (every 3 weeks, every 3 months, etc.), currency and the amount. To provide a better experience and flexible billing plan to your customers, you can set the formulas to calculate the billing amount and frequency according to your customer selection in the form. You can add discounts to subscription fee when your customers select several products or services. You can also allow your customers to add extra. Your options are limitless.