DiffMate ‑ Asset Compare Tool

The reviews are overwhelmingly positive. Users consistently praise the app for making Shopify theme upgrades, code comparisons, and change tracking much easier and faster. Many describe it as simple, easy to use, and a major time-saver, with several saying it should be built into Shopify itself. The fact that it is free is also highlighted as a major advantage, and some reviewers specifically appreciate features like identifying missing code files and helping teams manage theme changes more safely. The main negative feedback is limited but important: one reviewer says the diffing algorithm is poor, especially when code formatting changes from multi-line to single-line, which can throw off the rest of the file comparison. That same reviewer also notes a lack of granular undo controls, making it difficult to revert individual mistaken merges without discarding all changes and starting over. Overall, the app is seen as highly valuable and effective, but with room for improvement in diff accuracy and change-reversal workflow.