Matrixify

Updating this review because shortly after leaving it I received a phone call from support. That's pretty rare in my experience. So I'm changing to 5-stars because the app really did get the job done well.
Needed to export customers with 'multiple addresses' from one Shopify store to import into another. The export went great. A paid subscription is supposed to cover two stores but I could only import a maximum 10 customers at one time into the second store. Support was non-responsive to email and chat. Tired of waiting after 24 hours and needing to get the job done, I made 16 separate imports. The imported customers exactly matched the original store's customers. If it hadn't been for non-responsive support and multiple imports I would have given 5 stars.

We used it to change all the discount codes in the shop (more than 1000). it worked great. the customer support is also very helping (used Slack to communicate with them which I find great!). Thank you very much :-)

Great app to bulk import product with multiple pictures.

Top notch customer service...

I used this app to migrate from old Shopify store to a new Shopify store. It worked seamlessly!!! What a joy. Saved sooo much time. And support was very quick with connecting both my stores to the same paid account. If you are looking to switch stores, this is your tool.

This app is amazingly powerful! Although it is a bit overwhelming at first because it can do so much, their support responds almost immediately and was very patient and helpful with all of my questions! I would definitely recommend this product (although I think shopify should buy them and make it part of the default feature set!)

Worked perfectly first time on a fairly complex product migration of 6000 products including meta data. Easily the most straightforward import/export experience I've had with Shopify.
It was also great to get chat support during the process!

A++ Support!
They helped me in seconds, fast response and most of all kind support!
Support staff clearly knows their stuff to assist with any question.

Go ahead and give this app a try!

Every now and then, you cross paths with someone who is truly significant in your journey. Whether that be from the services, advice or energy they provide to you. I rarely write 5-star reviews because as a business owner myself, I rarely get to experience the kind of 5-star service I strive to provide. In this case, Maris is nothing short of a hero in the world of Shopify. Firstly, the capabilities his app has to offer are an absolute must for anyone serious about their store. The ability to import, export pretty much all aspects of your store make light work of what would be an impossible task alone. Automation is vital for any business growth and I can now make bulk changes with a tinker of an excel sheet and a press of a button. Not only has Maris created a wonderful and easy to use app with all these precious functions, he stands behind his work with the greatest service possible. This app has opened many opportunities regarding business, especially in the dropship world where you can quickly export and import products to different stores making cross testing a breeze. I now have the power to export all collections and import into a new store without the hassle of waiting for loading times. The list is endless and the monthly charge is an absolute steal compared to the value this provides. Thank you Maris for all your kind words, advice and guidance.

Amazing, I was able to update the alt text on all of my products in minutes rather than hours and hours of work. Very happy customer.

Free version is useless. Especially for blog comments, you cannot get more than 25 commets(it means nothing, you can do this manually)

Edit: Thanks for the response. If it is a bug that is okey.