Mittika Jewels review for Checkout Upsell — Addonn

March 7, 2026

Addonn was exactly what we needed to offer optional services. Setup was quick and the add-ons integrated nicely without disrupting the checkout experience for our customers. We’ve already seen customers selecting the extras, which is a nice boost in additional revenue from orders we were already getting. Simple app, clean interface, and great support from the developer whenever we had questions.