Reviews (79)

Overall rating
3.7
Counts per rating level
  • 68% of ratings are 5 stars
  • 1% of ratings are 4 stars
  • 3% of ratings are 3 stars
  • 4% of ratings are 2 stars
  • 24% of ratings are 1 stars
February 15, 2025

Worst customer service I have ever experienced. I have been reaching out trying to get help with numerous things since I started using the app and I have never received a response.

Sandy Bums Boutique
United States
About 1 year using the app
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
November 19, 2024

Terrible support, due to no support, removed the app and it left code in the site that broke features in my store. Had Shopify support involved with the issue and they responded several days later "we refunded the customer" leaving no regard to get the code removed from my website.

Photo Memory Bracelet LLC
United States
1 day using the app
Dash Labs SIA replied November 20, 2024

I am sorry for not getting back in time. As of today, your issue seems to be solved. Please let me know if we can help any further.

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
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 ?

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 3, 2024

"I'm extremely frustrated with Flash Speed Optimizer. As a paid subscriber, I expected my store to be fully optimized, but there's still a 30% unoptimized score on mobile. This is a serious issue since most of my visitors come from mobile, and it's directly impacting my business negatively. Despite multiple emails and chat messages, I've received zero response. This level of neglect is unacceptable. I demand immediate action to optimize my store and compensation for the damage done to my business due to their inaction. Do not trust this app if you value your business!"

PRINT EXPLORE
Greece
29 days using the app
Dash Labs SIA replied October 10, 2024

Hello,
we have replied to your requests but it looks like you didn't get the replies.
Can you please double check and get back to us via E-Mail info@flash-speed.com

September 19, 2024

It simply make all your images to fake board at the first loading, then make lazy loading to img, BUT in may cases java have failing and images not show up. page speed goes up immediately but it totally ruin the view overall. second thig: it makes 1K back links from one IP.
And support is not answering at all.

Alus live - Aludaris.lt
Lithuania
3 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?

March 25, 2024

Very expensive and misleading, money pit. It does what they say, but at an unreasonable and unexpected price, way above $19.90 they advertise. Also, they raised their base prices without warning, when I installed, the base price was $9.90

Anbu Clothing Brand
Serbia
5 months using the app
Dash Labs SIA replied March 26, 2024

Hi Anbu Clothing,
for old subscribers, we didn't raise the prices at all. Please write us an E-Mail and we will get this sorted.