Afterpay is a ‘buy-now-pay-later’ platform that allows customers to pay for their purchases over four, fortnightly instalments. Retailers that offer Afterpay get paid immediately, but are charged a merchant fee of 4.17%. It’s like a modern-day credit card with an interest-free period.
Fomo is an ecommerce tool to increase on-site conversion rate. When you install it on your website, users will see popups (most often on the bottom left of their screen) showing you that other people have recently placed an order on the website, hence the name "FOMO".