Skip to content

Tree survey app for arborists

Stop typing tree data twice.

LogLog replaces the clipboard-and-spreadsheet shuffle. Mark trees on your site plan, record species and DBH, snap photos — export the report. All from your phone.

Get early access Get an access code

LogLog doesn't use open self-signup — request a code and a human emails it back, usually within a day or two. No demo call, no account, no card. Already have access? Open the app →

LogLog workspace showing a site plan PDF with numbered tree pins and the tree data editor panel
Built by an ISA Certified Arborist No app store needed Your data stays on your device
Actively built
  • Jul 9, 2026 Team accounts, secure per-tenant login
  • Jul 6, 2026 Field-tested a week of bug fixes
  • Jul 5, 2026 Export reliability fix
Full changelog

The tree survey workflow is broken.

If you're still running clipboard, camera roll, and a spreadsheet as three separate tools, see how that stacks up against LogLog in our full comparison hub, starting with the spreadsheet comparison.

The old way

Print the site plan, mark it up by hand. Then photograph the markup. Then hope you can read your handwriting later.

With LogLog

Tap to place trees on your actual site plan. No printing, no hand-marking, no squinting later.

The old way

Type everything into a spreadsheet after. Back at the office, squinting at field notes, entering DBH measurements row by row.

With LogLog

Enter it once, on site. Species, DBH, condition — done. Walk away. That tree is finished.

The old way

Photos in one place, data in another. Camera roll full of tree photos. Which one was tree #14? Who remembers.

With LogLog

Photos attach to their tree. Always linked. Always findable.

Four steps. One visit.

Upload your plan before you leave the office. Do everything else on site. Need the fuller how-to? Check the guides.

Step 1

Upload

Load your PDF site plan. Any survey drawing, any scale.

Step 2

Pin

Tap the plan to drop numbered tree markers. Each pin becomes a full record.

Step 3

Record

Species, DBH, condition, photos, notes. Fill it in once, on site. Done.

Step 4

Export

One tap: ZIP with spreadsheet, annotated site plan, and all photos. Client-ready.

Built for the field.

Close-up of a PDF site plan with numbered tree marker pins placed on the drawing

Mark up any PDF site plan

Load your site plan. Tap to drop tree markers. Each pin becomes a full record — species, DBH, condition, photos, notes.

No more

2x

data entry. Record once in the field, export when you're done.

Mobile view of the LogLog workspace showing tree pins on a site plan with sync status bar

Works offline. Syncs when you're ready.

No cell signal on site? No problem. LogLog stores everything on your device. Data syncs when you're back online. See exactly how on the data & trust page.

LogLog project info panel showing the Download ZIP Package export option

Export what your client needs.

ZIP with spreadsheet, annotated site plan, and all photos. Ready for the client in one tap. Excel, CSV — whatever they want.

Trees

Unlimited

Accounts needed

0

Connectivity

Offline

Exports

CSV·XLSX·PDF·ZIP

From the founder

"I was 147 trees into a 200-tree residential survey. My hand-written field notes were half-illegible. The spreadsheet back at the office was going to take all evening. I thought — there has to be a better way to do this."

Serg ISA Certified Arborist

After years of printing site plans, hand-marking trees in the field, and then spending evenings re-entering everything into spreadsheets — I built LogLog. The tool I wished existed every time I walked a job site with a clipboard.

It started as a personal workflow fix. Now I want every arborist who does tree surveys to have it. No more clipboard shuffle. No more disconnected photos. Upload your plan, drop your pins, record your data, export the report. Done.

Free for your first project. No credit card, no catch.

Pro is on the way for practices that need more than one active project. Full pricing details →

Free

$0 forever

1 active project, up to 250MB storage

PDF annotation

Photo attachments

ZIP / Excel export

Offline-first field work

Get early access

Need a code first? Get one here.

Pro

Coming soon
Price TBD

Everything in Free

Multiple projects, more storage

Cloud sync across devices

Team accounts

Early access list — one email when Pro ships. No newsletter. Read the privacy note.

Free stays free — Pro adds more, it doesn't take anything away.

Get an access code

One email in. One code back.

LogLog doesn't run open self-signup — enter your email and a human emails your access code back, usually within a day or two. No demo call, no sales meeting, no account creation, no card. Once you have a code, you're surveying the same day.

Why an access code? Solo dev, no open registration, no spam — this keeps it that way.

A human emails your access code back — usually within a day or two. Read the privacy note.

Questions

What devices and browsers work with LogLog?
LogLog works in any modern browser — Chrome, Safari, Firefox, Edge. It's built as a progressive web app, so it works on iPhones, iPads, Android phones and tablets, and desktop computers. No app store download needed.
Is my data private? Where is it stored?
On Free, all data stays on your device. We never see it, never store it, never share it. Pro will add optional cloud sync when it launches, but it isn't live yet — see pricing for details.
How does offline mode work?
LogLog is offline-first. Once you've loaded the app, it works without any internet connection. All your data, PDFs, and photos are stored locally on your device.
What's in the ZIP export?
A complete project package: Excel/CSV spreadsheet with all tree data, the annotated site plan with pin locations, and every attached photo organized by tree number. Ready to hand to your client or attach to a report.
Is there a limit on projects or trees?
Free covers one active project with up to 250MB of storage — unlimited trees and photos within that. Need more than one active project? Pro is coming soon.
Do I need to create an account?
Self-serve signup isn't switched on yet. Join the waitlist and we'll send you an access code directly — after that, open the app and start working, no verification emails.
Can I use LogLog for commercial arborist reports?
Yes. LogLog is built for professional arborists doing real field surveys. The ZIP export is designed to go straight into client deliverables. Use it for residential assessments, municipal inventories, development permits — any tree survey work.

Free. No app store. Open it and go.

Works in any mobile browser. Join the waitlist for an access code and start surveying. Don't have one? Get it here.

Get early access

Already have access? Open the app →