Different feedback apps for different variants on my store

Hi All,

Post-COVID, we had to change our sales strategy from B2B to B2C. To launch our renewed products, we are doing physical sampling of our products with selected influencers while keeping the existing products as is. 

1. For each Product Sample, we will create a new product with limited slots

    - they will only be accessible to our influencers (For access control, we are planning to use Locksmith.)

    - we want to get NPS feedback (mainly NPS score and reasons for the score)

2. Customer Reviews for all the products on the website. Rich content feedback (including photo and video) by all the customers on our website.

It would be of great help if any of you could suggest one/multiple apps to achieve the same.