Looking for feedback: I built a tool to handle duplicate customers (Klaviyo sync included)

Hi everyone,

I’ve been a developer in the ecosystem for a while and noticed a recurring pain point: Duplicate Customer Accounts (especially from Guest Checkouts or POS).

I saw many merchants struggling with spreadsheets and CSV exports to fix this, so I spent the last few months building a dedicated app called UnifyMate to automate this.

It currently handles:

  • Auto-scanning for duplicates (Name/Email)

  • Bulk merging via Shopify’s official API

  • Syncing the merge events to Klaviyo (so you don’t pay for duplicate email profiles)

I’m looking for some honest feedback from store owners.

The app is live on the App Store with a Free Tier (5 free merges/month). If anyone is currently dealing with messy data, I’d love for you to try the free scan and let me know if the UX makes sense to you.

Here is the link: UnifyMate: Merge Customers - Automatically merge duplicate profiles & sync with Klaviyo. | Shopify App Store

Thanks in advance for any roasting or suggestions!