Here is what i see as some differences today between CookTrace and Tandoor:

CookTrace:

• Pantry is a real first-class catalog, not a tag list. Barcode scanner, Open Food Facts + USDA lookup, per-item stock / serving size / nutrition, plus an “8 / 10 in pantry” match pill on every recipe card. Tandoor has the food list; CookTrace treats it as a primary surface.
• AI assistant with tool use — not just a chat bubble. Trace can log a cook, plan a cook, add things to the shopping list, mark a pantry item out of stock, import a recipe URL, etc. by reading and writing your real data
• FDA-style Nutrition Facts box auto-computed per recipe from pantry-linked ingredients
• Android app with full offline mode (on-device SQLite, differential sync when you reconnect)
• NutriTrace federation can import foods from NutriTrace directly into CookTrace’s pantry.

Where Tandoor still wins today: PDF / image OCR bulk import, longer track record, larger ecosystem, iCal meal-plan feeds.

Importer’s there in CookTrace, so you can move a copy over to compare with zero risk to your existing library whenever the time shows up.