Build a Mobile Application in React Native or Flutter

We have built a listing website for management of Logistics, Products, Advertisements and Jobs which can be accessible through package purchase. Users can either post their requirement or search for available service providers. we are looking forward app developers who can built UI, API and functionality. Currently we have integrated Stripe gateway for purchase of packages and Advertisements. One type of payment is one time and other is recurring. Do not randomly apply before reading description, I will completely ignore bid. Also ignore irrelevant question like what is your budget, you will loose opportunity. I am a developer so please talk sense with me, I would really appreciate.