Turtle Universe vs ArborTrack

Dive into the mesmerizing world of Turtle Universe, where you can explore and learn about various social and scientific phenomena through captivating microworlds. Unleash your creativity by coding your own microworlds with text or blocks, and join lively discussions with young learners across the globe! 1) Discover over 100 intriguing scientific models from diverse fields – with even more on the way! 2) Investigate phenomena such as traffic jams, predator-prey interactions, and the blooming of flowers. 3) Immerse yourself in enthralling storylines within the microworlds. 4) Create and play with stunning computational art and addictive games just for fun! Inspired by NetLogo, the leading multi-agent programmable modeling environment, Turtle Universe brings the limitless power of computational modeling to smartphones and tablets of young students and educators like you! Experience genuine scientific modeling shared by countless researchers and students worldwide. Turtle Universe supports most NetLogo, NetLogo Web, and NetTango models right from the start. From the creators of Physics Lab, a physics experiment simulation app loved by over 3 million learners and teachers. =========================== Term of Use: https://static.turtlesim.com/products/Term-Of-Use.txt Privacy Policy: https://static.turtlesim.com/products/Privacy-Policy.txt =========================== Copyright 2021 John Chen & Uri Wilensky. All rights reserved. Turtle Universe is authored by John Chen & Uri Wilensky and maintained by CCL at Northwestern University. If you mention the software in a publication, please include the citation below: * Chen, J. & Wilensky, U. (2021). Turtle Universe. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.

ArborTrack Whether you're logging a few trees in your backyard or managing a professional inventory across dozens of sites, ArborTrack gives you accurate measurements and organized records — no tape measure, no clipboard, no spreadsheet required. MEASURE WITH LiDAR (iPhone Pro / iPad Pro) • DBH (Diameter at Breast Height) — point your camera at the trunk and a measurement ring locks on automatically. Drag to reposition, pinch to fine-tune, then confirm. Supports short trees, shrubs, and multi-stem trunks. • Height — walk-to-measure using the classic 45° sighting method: back up until the treetop sits at roughly 45°, mark your spot and the tree base, and ArborTrack calculates total height from the walked distance and your eye level. • Crown Spread — a two-point AR ruler measures canopy width in two directions, 90° apart. Don't have a LiDAR-equipped device? Every measurement can also be entered manually, so ArborTrack still works as a full tree inventory and organization tool on any iPhone or iPad. BUILT FOR THE FIELD • Works fully offline — no internet connection needed for any measurement tool • Reposition or redo any AR reading without starting over • Measurements are recorded in feet and inches TRACK EVERY TREE • Group trees into projects, with an optional site code to organize by location • Tree IDs assigned automatically in sequence • Record species, condition (good/fair/poor), tree type, and multi-branch status • Attach up to 3 photos per tree • Custom, reusable note chips for fast, consistent field notes • GPS coordinates and UTM captured automatically with every tree • Search and filter your tree list by ID, species, condition, note, or any measurement range • See every tree on a map, color-coded by condition • Track multiple surveyors on a shared device, each with their own height for accurate eye-level calculations WORK YOUR WAY • No account required — everything stays on your device until you choose otherwise • Sign in with email, Apple, or Google to back up your projects to the cloud • Automatic background sync keeps your projects current across your devices and with your team — no manual refresh needed • Share a project with your team, with view-only or edit permissions per person • In-app step-by-step guides for every measurement type EXPORT & REPORT • Export any project to CSV for reporting, GIS import, or client deliverables From a curious homeowner to a certified arborist, ArborTrack keeps your tree data accurate, organized, and easy to share.