What is the best app to scan food for seed oils?
Short answer
A seed-oil scanner app should do four things: match a barcode against a database of at least two million products, detect every seed-oil alias including foreign-language labels, read the ingredients panel by camera when the barcode is missing, and show you how its score was calculated rather than returning an unexplained number.
What separates a good scanner from a bad one
- Database coverage — under a million products means constant misses in a real supermarket
- Alias and language handling — a scanner that only matches English text misses imported food
- Label OCR fallback — roughly one scan in five is a product no database has
- A transparent score — if it won't tell you why, you can't check it
- Deterministic results — the same product should return the same score every time, not a number that drifts
- Cited sources — every flag should point at the body that raised the concern
Where Olive Detective sits
Olive Detective was built specifically for this niche. It detects eleven oils (the eight seed oils, plus generic 'vegetable oil' and palm oil handled separately), matches on the parsed ingredient taxonomy so foreign labels resolve correctly, falls back to reading the ingredients panel by camera, and shows the reasoning behind every score with a source link.
Its scoring is natural-first: whole foods are not punished for the salt or fat they naturally contain, and ultra-processing is what drives a score down. It also scans cosmetics and pet food, detected automatically without switching modes.
It is a paid app — a 7-day free trial, then $49.99 a year on iOS. That is the honest trade-off against free alternatives, and it is worth weighing.
The free alternatives, fairly
Open Food Facts publishes its own free app on top of the same database Olive Detective reads. It has no seed-oil-specific scoring, no personalisation and no cleaner-swap suggestions, but it is free, open-source and genuinely good at showing you an ingredient list.
Yuka is free for its core scan and has a much larger user base. Its scoring follows a nutrition-and-additives method that does not treat seed oils as a distinct category, so it will not answer the seed-oil question directly.
Frequently asked questions
- Is there a free app that detects seed oils?
- The Open Food Facts app is free and shows the full ingredient list, so you can spot seed oils yourself, but it does not flag them as a category or score them. Most apps that flag seed oils specifically are paid, usually by subscription.
- Do these apps work without internet?
- Barcode lookup needs a connection, because the product database lives online. Previously scanned products are cached on the device and reopen offline.
More answers
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Last updated 26 August 2026.
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