Reviews (289)

Overall rating
4.8
Counts per rating level
  • 93% of ratings are 5 stars
  • 1% of ratings are 4 stars
  • 2% of ratings are 3 stars
  • 1% of ratings are 2 stars
  • 3% of ratings are 1 stars
March 11, 2026

I've worked with Fast Simon for years and it is very user friendly! They are constantly making improvements and updates to the apo, Our CS Manager and their dev team respond so quickly to any issues that arise.

St. John Knits
United States
Over 1 year using the app
November 6, 2025

Have utilized this app for two years now. Staff is friendly and quick to assist. Very nice app, however the metric used for billing is number of monthly users visiting your website. For smaller stores this should never become an issue, however as you grow - especially if you have a large number of pages or products in your store, the Google bots will utilize many of the visits. Out store has an average of nearly 10,000 bot visits per month due to our extremely large catalog, to which we keep adding products. This worked fine for us until we hit the top 10,000 visits/month at the $99 level, however as we have grown we now see an average of 25-30,000 visits per month. The next level package they offer increases from $99/month to $249/month - a 150% increase. After much research we found all of the other collection filter apps charge is based on the number of products in your store. We needed to switch to one of these apps, which work just as well.

Wallhogs
United States
Over 2 years using the app
July 31, 2024

very happy with the app and support, with a recent google core updates and a need for shopify to be fast was a challenging. Fast simon offering side rendering on collection page has speed up our score in page speed insight, we are very happy with the app

Bathroom Store
Ireland
About 1 year using the app
Fast Simon replied September 15, 2024

A pleasure hearing about the LCP and CLS improvement!

July 19, 2024

An awesome app for search and collection management! The tools and information this app provides has helped our conversions and merchandising tremendously. The support team has been very helpful along every step of the process. If we ever need anything, we can always count on them to help us out!

707 Street
United States
Over 1 year using the app
Fast Simon replied July 22, 2024

Greatly appreciate the kind merchandising words! We love working with your guys at 707 Street :-)

March 14, 2024

Excellent support, fast turnaround on requests. Easy to use with No Code Editor, Fast Simon is a complete Search & Disovery and product merchandising solution. Very little manual merchandising needed upon installation of Fast Simon- even for a store with a catalog of 30,000+ SKUs. Highly recommend.

NRS
United States
6 months using the app
Fast Simon replied April 14, 2024

A true pleasure working with you guys in Texas - true partners in the past year!

December 20, 2023

We evaluated almost all search solutions and we decided to move of with Fast Simon. We increased search conversion rate, after improving UX with additional filtering options and machine learning. Great support, very involved during implementation phase and very fast answering any question via ticket.

Bañoidea
Spain
Over 2 years using the app
Fast Simon replied April 14, 2024

Truly appreciate the opportunity to work together!

Edited December 13, 2023

Collections pages give slower scores on google speed insights compared to standard shopify collection pages. Fast Simon team says nothing they will do but just asks us to fix issues on our side. The response by Fast Simon team isn't accurate, the sales increase isn't 60%, it's around 30%. Luckily Shopify now has very similar features in the collections and search they offer plus it's free, i'll slowly move to it.

FredCo International
United States
Almost 2 years using the app
Fast Simon replied November 18, 2023

Dear Fareed,

Thank you for sharing your concerns, and we appreciate your business with theFredCo.com over the past two years. We understand the importance of website performance and its impact on your business.

We want to express our gratitude for the significant role the Fast Simon platform has played, contributing to over 60% of your total revenues. Our goal is to continually enhance your store's conversion and SEO, and we take your feedback seriously.

We acknowledge that certain themes and third-party scripts can affect performance. We have been proactive in offering guidance on these issues and even extended a complementary service to review the liquid in your store. However, we've encountered challenges in addressing the highlighted theme issues, partly due to the limitations in accessing the non-live theme.

It's worth noting that your Google Page Speed Core Web Vitals Assessment for mobile is very close to being in the green zone. The Time To First Byte (TTFB) is the last piece that is still in the orange, and the suggested solutions we sent and wanted to review in the liquid are probably the culprit.

As the Fast Simon team, we take pride in serving a diverse range of D2C brands, and we have not experienced such difficulties in cooperation with our clients before. We remain committed to finding a resolution that meets your expectations and improves your website's performance.

We understand that the upcoming BFCM season is crucial for your business, and we sincerely wish you the best of luck. Our team is here to support you, and we remain open to further collaboration to address any outstanding concerns.

Thank you for your understanding and continued partnership.

October 10, 2024

Exceptional support and technical expertise. Whenever I have requested help, I receive prompt support and always a resolution - first time. Highly recommend!

Cerqular Hong Kong
United States
Over 1 year using the app
Fast Simon replied February 11, 2025

Thanks for your great review!

September 11, 2024

The app is great, the customer service is great, and the developers are always willing to help!

Shani Jacobi Jewelry
United States
About 2 years using the app
Fast Simon replied September 15, 2024

What a great honor to be working with an ecommerce partner like you guys!

August 8, 2024

Great customer service! When we had a problem, the tech staff was accommodating. I would recommend this app.

Inked Shop
United States
About 3 years using the app
Fast Simon replied September 15, 2024

Thanks so much for the great partnership!