Is there an alternative to the Reserve Cart app for managing stock?

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Hi,

is there an alternative for this app?

https://apps.shopify.com/reserve-cart-by-coderslabbeta?locale=de&utm_campaign=guru%20ask&utm_medium=...

It reserved a cart with a countdown. The problem is that multiple customers could have the same product in their cart. Customers won’t be able to purchase the product if it goes out of stock while they’re browsing the store or finishing the checkout process.

Thanks in advance for your help.

Best Regards.

Cem

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https://www.youtube.com/watch?v=HyAaLEJL2h0

also not available any longer.