Free plant identifier apps compared: what you get without paying.

What free means for a plant identification app

An app listed as free can still cost you something. Before choosing, it helps to separate four common models:

• Free and non-commercial: run by research groups or nonprofits, paid for by grants and donations, with no subscription to unlock.
• Free as part of a bigger service: a general tool from a large company, paid for by its wider business.
• Freemium: free to download with some identifications or features, and a paid tier for the rest.
• Free trial: full access for a few days, then a subscription unless you cancel in time.

Store listings show which apps contain ads or in-app purchases. Those two labels are the quickest way to tell a free app from a trial.

Each free plant identifier app at a glance

Details below were checked on official websites and Google Play listings in October 2026. Prices and plans change, so look at the current listing before you install.

Pl@ntNet: free and built for science

Pl@ntNet is run by a consortium of French research institutes, CIRAD, INRAE, Inria and IRD. Its website asks for donations for keeping Pl@ntNet open and free to everyone, and its Google Play listing showed no ads or in-app purchases when we checked. You can tell the app which part you photographed, such as a flower, leaf, fruit or bark, and add several photos of the same plant.

Its own description says it is mainly designed for plants living in nature, including trees, grasses, ferns, vines and cacti, and that it can name many cultivated plants in parks and gardens, though that is not its main purpose. For a wildflower on a walk it is a strong choice. For an unusual houseplant cultivar it may only get you to the right genus.

iNaturalist and Seek: free, with people in the loop

iNaturalist is a 501(c)(3) nonprofit organisation based in the United States. It became independent in 2023, after years as a joint initiative of the California Academy of Sciences and the National Geographic Society. The app can suggest a name from a photo, and other members can then confirm or correct it. That human check is its biggest strength: a doubtful plant can get a second opinion from someone who knows the local flora.

Seek is the simpler sister app. Its official page says that no registration is involved and no user data is collected. It asks for location access to suggest species from your general area, but says your precise location is never stored in the app or sent to iNaturalist. Its image recognition is based on observations submitted to iNaturalist and identified by its community. Seek suits children, classrooms and anyone who wants a free app to identify plants without creating an account.

Google Lens: a plant identifier, free inside tools you already have

Google Lens is not a dedicated plant app. It is a visual search tool inside the Google app, Chrome and Google Photos, and it is built into the camera on some Android phones. Point it at a plant and it shows matching images and web pages, often with a likely name at the top.

As a plant identifier, free and already installed on many phones, it is hard to beat for convenience. The trade-off is that the results come from the open web. A name is only as good as the pages behind it, and you do not get the plant-part prompts, local species lists or community review that botanical apps offer.

PictureThis and other freemium apps

PictureThis is free to download, and its Google Play listing carries the in-app purchases label. In a reply to a reviewer on that listing, the developer describes a 7-day free trial of premium features that requires payment information and can be cancelled up to 24 hours before it ends. The listing also claims identification of more than 400,000 species with over 98% accuracy. That is the developer's own figure, not an independent test.

The listing also advertises disease diagnosis, watering reminders, a plant collection and expert consultation, without spelling out on that page which features need premium. If you only want a name now and then, the free apps above do that without a trial. If you want ongoing care reminders, compare the subscription price on your store before you sign up, and set a reminder to cancel if you are only testing.

How accurate are the free apps?

Independent tests suggest free apps are good, but not perfect. A 2023 field study tested five free apps, Pl@ntNet, Google Lens, PlantSnap, LeafSnap and Seek, on 857 professionally identified photos. Across all five, the first suggestion was correct for 69% of photos and the right species appeared in the top five for 85%. At least one of the three best apps got the right answer first for 96% of photos.

Accuracy also varied by plant type, and no app was right every time. The guide to how plant recognition works explains why, and why no app should decide whether a plant is safe to eat.

Read how plant recognition works

Which plant identification app free option should you choose?

• Hiking or botanising: Pl@ntNet, with photos of the flower and a leaf.
• A plant that stumps the apps: iNaturalist, so other people can review the observation.
• Children or privacy-minded users: Seek, with no account and no stored precise location.
• A quick check on the go: Google Lens, if it is already on your phone.
• Long-term houseplant care: a freemium app may be worth paying for, but try a free one first.

If you prefer not to install anything, the identifier on this site runs in a web browser: you can upload a plant photo and compare the suggested matches. Whatever tool you use, sharp photos of more than one plant part make the biggest difference.