Best Arborist Apps for iPhone in 2026
An honest look at what's actually useful in the field — measurement, species ID, inventory, and eco-benefit reporting.

The App Store is full of plant identification apps. But professional arborists need more than a species name — they need diameter measurements, GPS-tagged records, and quantified eco-benefit data that can go straight into a client report.
This guide reviews the apps actually worth carrying on a tree survey in 2026, with an honest assessment of what each does well and where it falls short.
What a professional arborist app actually needs
Diameter measurement
BHD/DBH is the foundation of every tree assessment. An app that can't measure trunk diameter requires you to carry separate equipment.
Species identification
Accurate species ID is required for allometric calculations, condition assessment, and client reports.
Eco-benefit output
CO₂ storage, O₂ production, water interception, and economic value are increasingly required in planning and client reports.
GPS-tagged inventory
Records need location data to be useful across multiple site visits and for handoff to municipalities or clients.
The apps
Treesable
Our pickAll-in-one assessment · iOS 17+ · Free (beta)
Strengths
- +AR diameter (BHD/DBH) measurement — accurate to 2–3mm
- +AI species identification from photo
- +Instant CO₂, O₂, water, and economic value per tree
- +GPS-tagged inventory built automatically
- +Global allometric database + local meteorological data
Limitations
- −iOS only (no Android)
- −Currently in beta via TestFlight
Verdict: The only app that combines measurement, species ID, and quantified eco-benefits in a single workflow. Best choice for arborists who need client-ready reports.
PictureThis
Plant identification · iOS / Android · Freemium
Strengths
- +Large plant database — good general identification
- +Accessible for non-professionals
- +Works on flowers, shrubs, houseplants
Limitations
- −No diameter measurement
- −No eco-benefit calculations
- −Not designed for professional tree surveys
- −Accuracy inconsistent on mature urban trees
Verdict: Good for casual plant ID. Not built for professional arboriculture — lacks measurement tools and produces no quantified outputs for reports.
iNaturalist
Species observation · iOS / Android · Free
Strengths
- +Strong community-verified species identification
- +Good for biodiversity surveys
- +Open dataset — observations shared globally
Limitations
- −No diameter or measurement tools
- −No eco-benefit calculations
- −Community verification can be slow
- −Not designed for professional client reporting
Verdict: Excellent for ecological observation and biodiversity recording. Not suitable for professional tree assessment workflows that require measurement data and eco-benefit output.
ArborNote
Tree inventory · iOS · Subscription
Strengths
- +Structured tree inventory workflow
- +GPS-tagged records
- +Condition and risk assessment fields
Limitations
- −No AR measurement — manual data entry required
- −No AI species identification
- −No automatic eco-benefit calculations
- −Subscription cost
Verdict: A solid inventory tool for arborists who already have measurements and just need structured record-keeping. Doesn't eliminate the need for separate measurement equipment.
Quick comparison
| App | Measurement | Species ID | Eco benefits | GPS log |
|---|---|---|---|---|
| Treesable | ✓ | ✓ | ✓ | ✓ |
| PictureThis | — | ✓ | — | — |
| iNaturalist | — | ✓ | — | ✓ |
| ArborNote | — | — | — | ✓ |
Bottom line
If you need a casual plant identification app, PictureThis or iNaturalist will do the job. But for professional tree surveys that produce measurement data, species-confirmed records, and client-ready eco-benefit reports, none of the existing tools matched what we needed.
That's why Treesable was built — to replace the clipboard, the diameter tape, the species guide, and the carbon table lookup with a single 60-second iPhone workflow.
Try Treesable free
The arborist app built for professional surveys.
Free early access via TestFlight. iOS 17+ required.
Download on TestFlight →