I had been using the free version of 10web which allowed me to optimize only 6 pages for Desktop only.
I had been looking for an alternative and can't believe I have found this lifetime deal on Appsumo.
Although it's just been two days since i started using it, it's working fine so far without any conflicts.
However, I would suggest try the free version first to see if it works for your website. Once you decide to purchase, change the email address to something else the one you used for the free version, otherwise when you try to redeem your code using the previous email, after you login to the Berqwp dashboard, you won't see the redeem option, it will just bring up the dashboard that you have in the free account version.
This was the only problem I encountered while redeeming the code and I hope the Berqwp team fixes it asap.