shopify apps developer need with exp

Feature1-Go to [login to view URL] Click on any product See the 4 great reasons to buy from us And the trust badges in the footer also Anything that builds more trust with the customer. Feature 2 - name is product bundling made easy Let me explain the scope This app is selling 3 of the same product as a bundle - eg set of 3? We would give better price than individual x 3. Maybe 3 different colours as an example . I want the customer to see the bundle option near the colours on the product page Feature 3 - Countdown timer Let me explain scope Countdown timer with custom text per product That used caches what I'm after is that when the customer leaves a page and then returns later that the countdown timer doesn't [login to view URL] should only reset if they clear cookies Features 4 - name is inventory levels Displays the number of stock items available per variant with an override and minimum option With custom text per variant App must be independent work with any shopify store and must be install in shopify apps store. Thats all