Metafields Guru

I used Metafields Guru to bulk add a huge amount of metafield data to my relatively large store. Even with over 25,000 products, Metafields Guru handled the bulk imports easily. The error handling made it easy to see where my data was a little off (eg I had some handles in my spreadsheets that didn't match exactly to shopify). Metafields Guru caught this and made it simple to fix just those items. The app interface is intuitive and I was able to accomplish exactly what I wanted. I appreciated the app's free credit system so I was able to test everything before committing to a subscription. Sasha answered all my questions quickly and the app works just as expected. 5 stars for sure.