Professional-Grade Elevation Measurement for Research, Education, and Field Work
Nationwide One Touch Calibration™
Precision altitude tracking with USGS ground-truth calibration
Download on the App StorePerfect for classroom demonstrations and professional field work
Real-time altitude measurement using your device's GPS receiver for instant elevation data anywhere.
Automatic calibration using USGS elevation data for improved accuracy. Calibrate once, measure all day.
Record elevation measurements with timestamps and coordinates. Export to CSV for analysis in Excel, Google Sheets, or GIS software. Perfect for student projects and research documentation.
Works in the field without internet. GPS-only mode and manual calibration keep you measuring anywhere.
Leverages USGS National Map data for ground-truth calibration, achieving ±1-3 meter accuracy.
Clean interface designed for fieldwork. Get your measurements quickly and get back to your research.
Hands-on science with real instruments - perfect for Earth Science and Physics classes
Calibrate on ground floor, measure on top floor. Calculate building height from pressure difference. Real-world math application!
Compare GPS readings in open fields vs. under trees vs. urban areas. Students discover how environment affects satellite positioning.
Log data during field trip. Export to Excel/Sheets. Students graph pressure vs. elevation to see the atmospheric relationship.
Supports Next Generation Science Standards. Measurement & data, Earth's systems, engineering design, and technology application.
No cost barriers • BYOD ready • Real instruments, not simulations • Data export for analysis • Immediate results • Works on field trips • Supports inquiry-based learning
From middle school classrooms to PhD fieldwork
Perfect for Earth Science and Physics classes! Students learn about atmospheric pressure, GPS technology, and measurement accuracy using real instruments. Activities include: measuring building heights, comparing GPS accuracy in different environments, creating elevation profiles on field trips, and graphing pressure vs. altitude relationships. Exports data to Excel or Google Sheets for classroom analysis. Free for all students - just bring their iPhone!
Document elevation at sample collection sites, track altitude changes during surveys, and maintain accurate field notes with reliable altitude data. Perfect for graduate students and researchers conducting field studies.
Map watershed boundaries, study elevation-dependent ecosystems, and analyze terrain features with precision elevation measurements. Ideal for ecology, hydrology, and conservation work.
Ground-truth digital elevation models, verify survey data in the field, and collect elevation points for spatial analysis. Professional-grade accuracy without expensive equipment.
STEM field programs, outdoor recreation courses, and environmental education. Track elevation gain on hikes, study landforms, and teach scientific measurement in natural settings.
Designed with precision and reliability in mind
USGS National Map Elevation Point Query Service - authoritative ground elevation data covering the United States
GPS: ±10-20 meters
Calibrated barometer: ±1-3 meters (conditions dependent)
GPS receiver, barometric pressure sensor, and USGS ground elevation data integration
iOS device with GPS capability. Internet for calibration (offline mode available)
No data collection. Location used only for measurement. Nothing stored or shared.
Outdoors with clear sky view. Calibration takes 30-60 seconds for optimal accuracy.
Join teachers, students, researchers, and professionals using Scientific Altimeter
Download on the App StoreFREE Forever • No Ads • No Subscription
Perfect for classroom use - students can use their own devices!