PlantNet, Seek, Flora Incognita and PictureThis compared — free scientific IDs, kid-safe camera walks, accuracy on wild plants and houseplant recognition.
Point a phone at a wildflower and get a name two seconds later stopped being magic a while ago, but not every app gets the name right. Research-institute projects identify against open scientific databases and ask nothing of you; commercial rivals are slicker on houseplants but ration free scans to sell subscriptions, and the difference shows in both accuracy and how you are treated. Photo technique matters as much as the engine — a distant shot of a whole shrub fails where a close, well-lit leaf succeeds. The two apps reviewed below are the free, scientific end of the field; the FAQ compares them with the most accurate and commercial alternatives.
PlantNet is a free, ad-free scientific project from French researchers, matching photos against millions of contributed images with a confidence score.
It is a research tool rather than a commercial product: a photo is matched against a collaborative database of millions of images, the result comes with a confidence percentage, and if you choose to share your pictures they help improve the system. It is very strong on European wild flora, weaker on indoor and ornamental plants, demands good photos of leaf, flower or fruit rather than a distant bush, and includes no care guides.
Seek identifies plants, fungi, insects and animals live through the camera with no account and no data leaving the phone.
Built for heading outdoors with children, it names plants, fungi, insects and animals in real time through the viewfinder, requires no registration and sends nothing anywhere, turning a walk into a badge-collecting game that is genuinely safe for kids. It is less accurate than PlantNet on specific flora, needs good light and a close shot to work well, and each species entry offers little detailed information beyond the name.
Pros
Identifies plants, animals, fungi and insects
Works without sign-up or sending data
Real-time identification through the camera
Cons
Less accurate than PlantNet on specific flora
Needs good light and a close shot
Little detailed information per species
Download price only. In-app purchases and subscriptions may cost extra.
Questions & answers
Which plant identification app is the most accurate?
Flora Incognita is usually the most accurate because it does not settle for one photo: it guides you through shooting the leaf, the flower and the overall habit separately, and that combined information raises the hit rate substantially. PlantNet is very strong on European wild flora, while PictureThis wins on indoor and ornamental plants, exactly where the scientific apps are weakest.
Can you identify a plant completely free?
Yes. PlantNet, Flora Incognita and Seek are entirely free and ad-free because scientific institutions maintain them. PictureThis is the commercial product in the group and caps free identifications to push users towards its subscription. For a walk in the Spanish countryside, the scientific trio covers nearly everything you will meet.
Can these apps tell me whether a plant is poisonous?
They are a starting point, never the only criterion. None is infallible, and some species look almost identical while one is edible and another toxic. Never eat, and never give a child, a plant or mushroom identified only through an app: confirmation from someone trained in botany or mycology is essential, especially with fungi, where mistakes can be fatal.
How should I take the photo so the app gets it right?
In good natural light and close up, framing one specific element instead of the whole plant: a single leaf against a neutral background, the flower head-on, or the fruit. Distant photos of entire shrubs give the worst results. If the app lets you specify which part you are photographing, as PlantNet and Flora Incognita do, always tell it — that extra context is what separates a confident match from a guess.
More related apps
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