The Mobile COGO Calculator and Exam Prep Platform Built for Surveyors.
From your first day studying for the FS to a full career in the field — HARLO SurveySuite brings exam prep, professional COGO tools, and project organization into one app.
Everything a surveyor needs. One app.
Built by a surveying professional who lived the problem firsthand.
Professional COGO Calculators
Eleven field-ready calculators including Inverse, Direction & Distance, Multi-leg Traverse, Horizontal and Vertical Curves, Area by Coordinates, and more. Built for accuracy, designed for field conditions, and fully usable offline.
FS & PS Exam Prep
NCEES-aligned practice questions, flashcards, and reference materials for the FS and PS exams. State-specific content for PS candidates, with study materials that match how the exam actually tests you.
AI-Powered Study Plans
Take a pre-assessment and get a personalized study plan generated for your weak areas. Track your progress week by week, retake assessments as you improve, and walk into exam day knowing exactly where you stand.
Simple, honest pricing
One plan for students, one for working professionals.
Student
For students preparing for the FS or PS exam.
- FS and PS practice questions
- Flashcards and reference materials
- AI-generated personalized study plan
- Progress tracking and reassessments
- Available on iOS and Android
Technician
For working surveyors and technicians who need both exam prep and field tools.
- Everything in the Student tier
- All eleven professional COGO calculators
- Project organization and coordinate storage
- CSV export for points and calculation results
- Offline access to every tool
- Account sharing across your devices
About HARLO Industries
HARLO SurveySuite is built by HARLO Industries LLC, a Service-Disabled Veteran-Owned Small Business (SDVOSB) headquartered in Los Angeles, California.
The app was founded by an Air Force veteran and surveying professional who saw the same problem on every job site and in every classroom: surveyors were stuck juggling half a dozen disconnected apps to get through their day. HARLO SurveySuite was built to fix that — one platform that supports surveyors from their first practice question through their full professional career.