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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.

Try LogLog Free
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

The tree survey workflow is broken.

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.

1

Upload

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

2

Pin

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

3

Record

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

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.

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.

Offline-first Export in 30 seconds Free forever

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.

No limits. No credit card. No catch.

Everything you need for solo tree surveys. Works in any mobile browser — no app store needed.

Solo

Free forever

Unlimited projects & trees

PDF annotation

Photo attachments

ZIP / Excel export

Offline-first — data stays on device

Start Free

Pro

Coming soon
TBD / month

Everything in Solo

Cloud sync across devices

Team collaboration

Admin dashboard & activity log

Priority support

Solo is free now and stays free. Pro adds team features.

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 the free Solo tier, all data stays on your device. We never see it, never store it, never share it. If you upgrade to Pro, cloud sync stores data on encrypted Cloudflare servers — but you always keep a local copy.
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. When you're back online, Pro users can sync to the cloud.
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?
No. Unlimited projects, unlimited trees, unlimited photos. The only limit is your device's storage space — and modern phones have plenty.
Do I need to create an account?
No. Open the app, enter the access code, and start working. No email, no signup forms, no verification emails. You can create a project in under 30 seconds.
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. No account required. Start surveying in under 2 minutes.

Try LogLog Free