Doppelganger
The reviews are mixed, with several merchants praising the app’s ability to identify, merge, and clean up duplicate customer records, especially when dealing with duplicate accounts, multiple email addresses, or order/customer profile issues. Positive reviews also highlight responsive and hands-on support from the developer, including quick replies, detailed email help, and even custom videos or troubleshooting suggestions that resolved problems effectively. Some users describe the app as working well and making customer data cleanup much easier. On the negative side, a few reviewers report that the app did not work as expected or would not load in the admin, and one user said it failed to truly merge customers and only “linked” them without solving the duplicate issue. Support responsiveness is also a concern in the negative feedback, with one reviewer saying they submitted requested information but never received a follow-up. Overall, the app appears valuable for duplicate customer management when it works, but reliability and support consistency are the main concerns.
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App never worked and would not load in admin. reached out to support and submitted their requested info but never heard anything back. My attempts to follow up with support when I heard nothing were met with crickets. Honestly don't bother.
Does NOT merge the customer. "links" them which does nothing on a search. You still have both customers
Doppelganger does have an actual merge functionality, but it might be a bit difficult to find. It's true we do link accounts together. This stems from the time actual merging was not possible with Shopify. This was added later and the previous functionality of linking the accounts was kept for the merchants that use it. Feel free to reach out and we'll be more than happy to show you how the app works.
I used this app to help me merge orders to the main customer profiles and delete the duplicate customer profiles. It was all part of a clean-up project to rid our customer list of duplicates. I ran into a problem with one profile. An order had some how been tagged to the main customer profile and duplicate customer profile. I reached out to Doopelganger support and within the hour Paul responded with a suggestion on how to correct the problem. I followed his suggestion and voila (like magic), Doopelganger was able to merge the order to the main customer profile and delete the duplicate. Doopelganger works like a champ and I couldn't be happier with the results. Thank you Paul!
Paul is unbelievable. The app wasn't exactly what I needed (for now) but he took the time to send me a detailed e-mail to try to help me out. Just fantastic customer service and a sign that he is truly invested in this app. You don't see that much these days!
I've just started using Doppleganger to help sort through the absurd number of duplicate accounts my store has. Paul has been very responsive to my questions, going to far as to make a video to walk me through adding an additional account to a merged group of accounts and how to unmerge a group of linked accounts - both of which are very easy to do.
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