Fulcrum vs. Survey123
vs. LogLog.

Fulcrum is a horizontal form-builder platform — construction, utilities, environmental consulting, and vegetation management teams all use it by building their own custom forms. It offers offline support, GPS/geolocation, and newer AI auto-fill features (FastFill, populating fields from a photo or voice note).

Survey123 is Esri's forms tool, built into the ArcGIS ecosystem. It's a natural fit if your organization already runs ArcGIS Online or Enterprise and wants tree data to land directly in existing GIS infrastructure.

Both are genuinely flexible and well-supported. Neither was built with arborists in mind — you're the one building the species/DBH/condition schema, and neither has a concept of "this site's actual PDF plan" as the surface you work on.

Three gaps show up consistently for arborist use: no native PDF site-plan annotation (you're placing GPS pins on a satellite map, not marking the client's actual drawing), photos land in a generic gallery rather than auto-linking to a specific tree record, and the export isn't client-report-ready — you get raw data you still have to assemble into something a client can read.

Pricing is also a real factor for a solo operator. As of mid-2026, Fulcrum's Professional plan runs $43/user/month annual ($55 monthly) with a 5-user minimum — meaning a true solo arborist is paying for five seats they don't need. A recent 50% price increase was called out by at least one reviewer as jarring. Survey123 requires an ArcGIS Online or Enterprise organizational license to use fully, adding GIS licensing and setup cost on top of the forms themselves. Check both vendors' current pricing directly.

LogLog skips the form-building step entirely — species (autocompleted against ~120 names), DBH, condition, ownership, action, preservation category, and risk fields are already there. Pins go directly on the client's PDF site plan, not a GPS satellite map. Photos attach to the specific tree record the moment you take them. Export is a single ZIP built for handing to a client: annotated PDF, spreadsheet, organized photos, summary sheet — not a raw data dump you still have to format.

If you need a form builder flexible enough to span construction, utilities, and environmental work beyond trees — or you already have GIS infrastructure you want tree data flowing into — Fulcrum or Survey123's flexibility is the right call, and LogLog's narrower, arborist-only design isn't trying to compete on breadth.

Fulcrum and Survey123 earn their flexibility fairly — an organization collecting ten different kinds of field data across construction, utilities, and environmental work genuinely benefits from one configurable platform instead of ten single-purpose apps. The cost of that flexibility is that nothing arrives pre-built: you design the tree-survey schema yourself, and the arborist-specific parts (PDF site-plan annotation, photo-to-tree linking, a client-ready export) still have to be bolted on or done by hand afterward.

If tree survey is the only field data you collect, that setup cost buys you nothing LogLog doesn't already have built in, and the 5-user Fulcrum minimum or ArcGIS org licensing adds cost a solo arborist doesn't need to carry. If you're collecting many different data types across a broader operation and trees are one form among many, a general-purpose platform's flexibility is the right tradeoff.