Tikkivo Catalog Sync is a Shopify app for merchants who get product data from suppliers. Connect a CSV, XLSX or JSON file, an HTTPS feed, a published Google Sheets CSV or a read-only JSON REST API, then map only the fields each supplier should control. New products are created as drafts. Existing products and grouped variants can be updated with price rules and available stock at one selected location. Manual updates show the proposed changes for approval before anything is written. Images, categories, metafields, bulk editing and a downloadable report of each operation are included. Limits: no XML, FTP/SFTP or private Google Drive/Dropbox connections in this release; scheduled updates are daily on Starter (not real-time). Plans: Free (2,000 variants, 1 feed), Starter $9/month (5,000 variants, 3 feeds, daily schedule), Growth $19/month (10,000 variants, 10 feeds). I'm the developer of Tikkivo Catalog Sync.