Compared by Tree Identifier's makers
PictureThis vs Tree Identifier
PictureThis is the bigger, broader app and did best in the main published tree test. Tree Identifier is a trees-first iPhone app. Here is how to choose, situation by situation.
Written by the makers of Tree Identifier. We compared what each app documents on its own App Store listing and website; we did not run lab tests. How we compared · Where the other app is the better pick
In short
PictureThis vs Tree Identifier comes down to scope. PictureThis covers all plants on iPhone, Android and the web, adds care reminders and 24/7 chat with plant experts, and was the top performer in a 2022 Rutgers study of 55 tree species. Tree Identifier is an iPhone app centred on trees, with a 138-species tree Collection, a Tree Map of finds and AI follow-up chat, but no confidence score and no offline mode.
- Disclosure: we make Tree Identifier. PictureThis facts come from its US App Store listing and website, checked 2026-10-21. We did not run lab tests.
- Pick PictureThis for houseplants and gardens, Android, or a published test result; pick Tree Identifier for a tree-focused log of finds on iPhone.
- Tree Identifier shows no confidence score and no look-alike list; PictureThis's own pages don't document either.
PictureThis is the most-rated plant app on the US App Store among those we looked at, it holds an Editors' Choice badge, and it was the top performer in the main published test of tree identification apps. Tree Identifier, which we make, is a smaller iPhone app built around trees. Both can put a name on a tree from a photo; they differ in scope, devices and what comes after the name. Start with your situation.
Pick by situation
Pick PictureThis if…
- You look after houseplants, a vegetable bed or a garden, not just trees. PictureThis covers all plants and adds watering reminders, a light meter and disease diagnosis with treatment plans.
- You or your family use Android, or want to identify from a computer. PictureThis runs on iPhone, iPad, Android and the web. Tree Identifier is iPhone only.
- You want a person, not an AI, to answer questions. Its US listing offers 24/7 chat with plant experts. Tree Identifier's chat is an AI assistant.
- You want the app with a published independent test. In the Rutgers study of 55 tree species it came first of six apps, and it also came first in a University of Maryland Extension test of nine apps on pasture plants. Tree Identifier has not been independently tested.
- Several people in your household will use it. Its in-app purchases include a Family Plan.
Pick Tree Identifier if…
- You mainly want to name trees on walks and keep a record. Each identification goes into a History, a 138-species tree Collection fills in as you go, and a Tree Map pins every find you made with location allowed, so you can return to a tree in fall for its fruit.
- You want to keep asking questions about the tree in front of you. A follow-up chat sits under every result, starting from three suggested questions, and the Tree Expert tab holds longer conversations with an AI assistant.
- You want no account. Tree Identifier needs no sign-in of any kind.
Pick neither (yet) if…
You need identification with no signal, or a confidence level and a list of look-alikes on every result. Seek by iNaturalist documents identification without a connection, and the best tree identification apps page lists apps that show a confidence level or look-alikes.
Where the other app is the better pick
PictureThis is the broader and better-tested app. In the 2022 Rutgers study published by the International Society of Arboriculture, it was the top performer of six apps on 55 tree species, naming the genus from 97.27% of leaf photos and the species from 83.86%; Tree Identifier has no independent test at all. PictureThis also runs on Android and the web, covers houseplants and gardens with care reminders, a light meter and disease diagnosis, offers 24/7 chat with human plant experts and a family plan, and has 1,120,340 ratings, average 4.8, US App Store, checked 2026-10-21, with an Editors' Choice badge.
| Feature | Tree Identifier | PictureThis - Plant Identifier |
|---|---|---|
| Listing name (US) | Tree Identifier AI: ID Trees | PictureThis - Plant Identifier |
| What it identifies | Trees first; other plants also get a result. The Collection lists trees only | All plants; the listing says over 400,000 species |
| Price model | Free to download; Tree Identifier Pro in-app purchases $2.99 to $19.99: weekly, monthly, yearly or lifetime (US listing, 2026-10-21) | Free to download; PictureThis Pro subscription with a free trial; in-app purchases $3.99 to $49.99 (US listing, 2026-10-21) |
| App Store privacy label | No data used to track you; purchases, location, user content and identifiers collected but not linked to you (US listing, 2026-10-21) | Purchases, identifiers and usage data listed as used to track you (US listing, 2026-10-21) |
| Devices | iPhone, iOS 16 or later; runs on iPad in iPhone layout | iPhone and iPad (iOS 15 or later), Android, web |
| Photos per identification | One | Not documented on the pages we read |
| Confidence level or other candidates | Neither is shown | Not documented on the pages we read |
| Without an internet connection | Not possible: every identification needs a connection | Not documented on the pages we read |
| Account | Not required, no sign-in | Not documented on the pages we read |
| Questions after a result | AI follow-up chat under each result, plus an AI Tree Expert tab | 24/7 chat with plant experts (listing) |
| Plant health and safety | Diagnose (severity badge) and Toxicology notes, both AI-written | Disease diagnosis with treatment plans, toxic plant warnings, weed identification |
| Care tools | Care Guide, Light, Water Calculator (AI estimates from the photo) | Care tips and watering reminders, light meter |
| Record of finds | History, a 138-species tree Collection, a Tree Map of located finds | Plant collection and wishlist |
| Independent accuracy test | None published | Top performer of six apps, Rutgers study, 2022 |
| US ratings | 2,889 ratings, average 4.81, US App Store, checked 2026-10-21 | 1,120,340 ratings, average 4.8, US App Store, checked 2026-10-21 |
Facts checked October 21, 2026
How we compared
We make Tree Identifier, so read this as a comparison by an interested party. Facts about PictureThis come only from its US App Store listing (description, Subscriptions and In-App Purchases sections, compatibility, ratings) and its own website, read on 2026-10-21. Facts about Tree Identifier come from the app's verified fact sheet, checked against the shipped code. We did not run lab tests or use PictureThis. Where PictureThis's pages say nothing (offline use, accounts, a confidence level), the table says "not documented", which is not the same as "no". For accuracy we cite published studies only: we don't repeat PictureThis's own accuracy claim, and we publish no accuracy figure for Tree Identifier because none has been measured independently.
Price and what you get free
PictureThis is free to download. Its US listing, checked 2026-10-21, shows a PictureThis Pro subscription with a free trial (the length isn't stated) and an In-App Purchases list from $3.99 to $49.99: PictureThis Pro at $39.99 (seven of the ten rows), $7.99 and $3.99, and a Family Plan at $49.99. The listing doesn't say which period each price covers; the purchase screen in the app does.
Tree Identifier is free to download with optional in-app purchases (Tree Identifier Pro). Its US listing, checked 2026-10-21, shows Pro Weekly at $5.99, Pro Monthly at $2.99 and $5.99, Pro Yearly at $9.99 and Lifetime Tree Identifier Pro at $19.99. Depending on a rollout we set remotely, a new install either uses every feature with no paywall, or gets a free allowance of identifications and expert-chat messages before Pro is needed. We don't print allowance numbers because they can change without an app update.
Both apps start free, so the cheapest way to decide is to try both on the same tree.
Where Tree Identifier falls short
Being plain about our own gaps:
- iPhone only. No Android app and no website identification. It runs on iPad, but in iPhone layout.
- Needs a connection. The photo is sent to a cloud AI model, so there is no identification without signal.
- No confidence score, no alternative species, no look-alike list. A result gives one name. Treat it as a lead and check the leaf arrangement, buds and fruit yourself.
- One photo per identification. You can't combine a leaf and a bark photo into one answer; run them separately and compare.
PictureThis vs iNaturalist, Seek and Pl@ntNet
Most people comparing PictureThis are weighing it against a free app, so here is the short version, from each app's own pages and the published tests.
- PictureThis vs iNaturalist. iNaturalist is free and non-profit, and other people can confirm your identification. In the Rutgers study it came second, behind PictureThis (92.27% to genus from leaf photos, against 97.27%).
- PictureThis vs Seek. Seek is free, needs no account and, per iNaturalist's help, does not need an internet connection. iNaturalist notes that Seek's model is generally older than the one its main app uses online. Pick it for walks without signal; pick PictureThis for care and diagnosis.
- PictureThis vs Pl@ntNet. Pl@ntNet is free, has a website and an Android app, takes several photos tagged by plant part, and has a downloadable offline model. It is run by French research institutes as a citizen-science project.
- PictureThis vs PlantSnap. PlantSnap's FAQ says it needs an internet connection; its US listing includes a one-time lifetime option among its in-app purchases. In the Rutgers study it did not give consistently accurate identifications, and in the Maryland test it was last of nine, with 26% right on the first suggestion.
For the full field of alternatives, matched to reasons for switching, see PictureThis alternatives.
What a photo can't settle
- The Rutgers figures describe app versions from 2020, and Tree Identifier did not exist then; neither app's current accuracy has been published.
Questions people ask
Is PictureThis better than Tree Identifier?
For most people with houseplants or a garden, or anyone on Android, yes: PictureThis covers all plants, runs on more devices and has a published independent test behind it. Tree Identifier suits iPhone users who mainly want to name and log trees, and who are fine with one photo per identification and no confidence score.
Does PictureThis identify trees?
Yes. In the Rutgers study of 55 New Jersey tree species (2022), PictureThis named the genus from 97.27% of leaf photos and the species from 83.86%. Bark was harder: 65.45% to genus and 51.82% to species. Those figures are for the 2020 version of the app.
Can I use both apps?
Yes. Both are free to download. Running the same photo through two apps is a quick check: if both agree on the genus, you can be fairly confident in it; if they disagree, look at the leaf arrangement, buds and fruit yourself before deciding.
Which one works without internet?
Tree Identifier does not: every identification is sent to a cloud AI model. PictureThis doesn't document offline use on the pages we read. If you need identification without signal, Seek by iNaturalist is the free option that documents it.
Sources
- PictureThis - Plant Identifier (US App Store listing) — Apple App Store (seller: Glority Global Group Ltd.)
- PictureThis app page — Glority Global Group Ltd.
- An Analysis of the Accuracy of Photo-Based Plant Identification Applications on Fifty-Five Tree Species (Arboriculture & Urban Forestry 48(1): 27–43, 2022) — International Society of Arboriculture (Schmidt, Casario, Zipse and Grabosky, Rutgers University)
- Snap It or Scrap It: Putting Plant ID Apps to the Test — University of Maryland Extension (Amanda Grev)
- What is the difference between iNaturalist and Seek by iNaturalist? — iNaturalist Help