Reviews (49)

Overall rating
2.4
Counts per rating level
  • 45% of ratings are 5 stars
  • 0% of ratings are 4 stars
  • 6% of ratings are 3 stars
  • 8% of ratings are 2 stars
  • 41% of ratings are 1 stars
January 16, 2025

I think no one is working on this. I was interested in purchasing the paid plan, but for 4 business days I received 0 support.

Haruhi Beauty
United States
6 days using the app
August 13, 2024

This developer doesn't respond to questions on slack or email. I need technical help and I have questions about usage fees. I've had the app for a little over a week now and my website speed hasn't improved. I will be cancelling this subscription before I'm hit with more usage fees.

VacationGrabs
United States
7 months using the app
Dash Labs SIA replied October 10, 2024

Hello,
we have replied to you in our Live Chat. Can you please contact us again at info@flash-speed.com so I can make sure to get this sorted out?

November 1, 2024

Altdaten im Quellcode nach löschen der App. Das führte zu verschiedenen Shop Fehler. Es wurde unteranderem kein Favicon mehr angezeigt und andere Apps wurde im Hintergrund blockiert (z.b. Klaviyo). Damit ist man praktisch gezwungen, die App dauerhaft zu nutzen, weil es sonst zu Problemen im Shop kommt.

bundeswehr-ausrüstung
Germany
6 months using the app
September 11, 2024

I have attempted to contact support repeatedly via both chat and email for several days, with no response. This level of disregard for customers is unacceptable, especially for an app that handles crucial aspects of an online store.

While the app may have potential, the complete lack of support makes it unreliable for professional use. I would advise developers to drastically improve their customer service if they want to be taken seriously in the Shopify market.

Unless you are willing to troubleshoot every issue yourself, I suggest looking for alternatives with more responsive customer support.

Sicilus Srl
Italy
10 months using the app
Dash Labs SIA replied October 10, 2024

Thanks for your review. We have responded to each of your request but it looks like you're not getting our replies. Can you please double check ?

February 10, 2026

You cant cancel your subscribtion watch out

E&C Heaters
Netherlands
22 days using the app
December 2, 2025

ATTENZIONE! APP TRUFFA. DOPO QUALCHE MESE DI UTILIZZO INIZIANO AD ADDEBITARE COSTI IMMOTIVATI.

Chiedilo al Farmacista
Italy
12 months using the app
December 3, 2023

Aujourd'hui la vitesse Shopify est de 43 comme avant d'installer l'application tout comme sur pagespeed insights.

ORANGE AMOUR
France
9 days using the app
Dash Labs SIA replied December 7, 2023

Thanks for your review. Unfortunately nobody has contacted us in order for support. Please get back to us via E-mail info@flash-speed.com and we're happy to provide support using our app

October 7, 2024

This is a total rip-off! They billed my account with an excessive amount.

streetmodestore.com

Don't argue with them about this, otherwise they will cleverly bill you.

STREETMODE ™
Germany
About 1 year using the app
May 29, 2025

The app did nothing to improve performance. When I attempted to uninstall, it left other apps not performing on my site (my new customer form and product reviews no longer function). Shopify confirmed it was due to code from this app screwing up those features. Now I'm left to sort that out because customer support is not responding.

Spectrum Sciences
United States
5 days using the app
July 19, 2023

Really disappointed in the support with this app. I sent two emails to support, no reply. I joined the slack channel back on 7/11 - Marc responded & requested access to my site, which I promptly approved. Since then - no response. My site speed dropped dramatically and I started to get errors in SEMrush. Was just looking for a little guidance, and Marc seems to be overwhelmed or just MIA. Fine... but your app isn't working and I'm not going to pay for it.

MaryJane Mommy
United States
About 1 month using the app