Power Tools Suite

A fantastic app with one of the best supports I have seen.
While the app is great out of the box, the team spent several hours making little tweaks to make it work the way I needed. Have been using for several years.
Highly recommend them.

Update July 2023: We've been using the powertools filter app for about 5 years and are still very happy with it (we recently added the Powertool Suite which has given us increased functionality). The support is spectacular and willing to help troubleshoot, offer guidance, and even some customizations. Very affordable.
Original review: Excellent app. We spent considerable time trying to set up other product filter apps and none of them did what we needed. Power tools filter is incredibly customizable and there are tons of automatic installations meaning even those with little coding experience can implement these filters on their site. There are also helpful tutorials if you get stuck and support was excellent. I was initially hesitant at the price when compared to other filter apps but of the ones I looked at in depth Power Tools has many more features and is worth it.

This app is a gamer changer. They have helped me with so many customizations for our site. 10/10

The filtering allows customers to find exactly what they want so much more easily than on my competitors' websites.

I have used this app on my store for 3 years and ran into issues while migrating to a new theme. The collections pages were loading super slow because we have thousands of products and many collections. The support team helped me to recode parts of the website to have it load faster. This was for free.