I tried many similar apps. This is amazing, actually more than I could wish. It can perfectly work also as a support for a "variant quantity brakes" method. It automatically adjust the variant quantity based on the selected variant. I installed it in a second, no one email with the dev has been necessary. Amazing experience after many many bad ones. I think the concept of "app" is perfectly expressed here: something that you install and it works right away.
I will definitely check all the other apps of them

perfect App. Does exactly do what we need.
Support was excellent and super fast, not seconds, but minutes :-)
Thanks for everything!

Perfect app for us. We need to have minimum quantities and maximum quantities on different variants within the same product and this works exactly how we need it to.

If we've ever had any issues (which have never been due to this app), the support team have been extremely efficient to resolve and have gone above and beyond.

Would not hesitate to use again.

Great app and great support! First the app wasn't working on my theme but the support team fixed it within minutes.

Love this app!
The app did exactly what we needed it to do. We did hit one hurdle but the customer service was excellent and we had everything resolved quickly. Thank you :)

Good App, quick and great helpdesk!

Simple and does the job. Thanks!

Simple little app that does what it's supposed to do!

Started cancelling random orders. After reaching out to buyers, I found out that they did not want to cancel. Looked into it, and this app had been manually cancelling the orders! Uninstalling now.

Had to use this app for maximum by product fonction for a week end sale we made! App was really easy to use and communication with it's creator was efficient end friendly! I would recommend this app to anyone