A field-ready reference, study, and evaluation tool for law enforcement officers conducting or studying Standardized Field Sobriety Testing (SFST).
SFST Guide & Grade brings SFST procedures, supplemental tests, study materials, randomized test tools, and field grading together in one streamlined, offline-first app.
FIELD-READY SFST REFERENCE
Quickly access procedures and reference information for:
Horizontal Gaze Nystagmus (HGN)
Walk-and-Turn (WAT)
One-Leg Stand (OLS)
Alphabet Recitation
Counting Backward
Romberg Balance
Modified Romberg
Each test has its own organized guide with procedures, scripts, hints, and available tools.
STUDY & REVIEW
Use the built-in guides and flashcards to review SFST concepts wherever you are.
Study standardized and supplemental tests, review procedures, and reinforce your knowledge without needing an internet connection.
RANDOMIZED TEST TOOLS
Counting Backward and Alphabet Recitation include built-in random pair generators.
Generate a new Start/End number or letter pair with one tap. Generated pairs follow the app's configured guidance, avoid immediately repeating the previous pair, and are designed to provide practical test scenarios for study and field preparation.
FIELD GRADING
Work through an SFST evaluation in one place.
Record observed clues using clear + and − controls, track your running total, and see the applicable decision threshold while you work.
Session-based grading helps keep observations organized from one test to the next, with a final summary of the evaluation.
DESIGNED FOR THE FIELD
SFST Guide & Grade is built around a simple interface designed to keep important information easy to find.
Large, clear controls
Dark-friendly interface
Haptic feedback
Accessible touch targets
Clear scoring states
Smooth navigation and transitions
Offline-first functionality
The app is designed to remain useful in environments where an internet connection may not be available.
PRIVACY & OFFLINE OPERATION
The core guide, grading, study, and test tools work without an internet connection.
SFST Guide & Grade does not require a network connection to browse its reference material or use its built-in tools. Evaluation information is handled locally during an active session and is not designed to create a permanent database of sensitive evaluation records.
FOR OFFICERS & AGENCIES
The app includes a dedicated Letter to Department Administrators explaining its purpose, capabilities, offline-first design, and limitations. The letter can be copied or shared directly from the app.
Image credits are also provided within the app for transparency regarding the visual reference material used throughout the application.
IMPORTANT
SFST Guide & Grade is a professional reference, study, and documentation aid. It does not make legal determinations, determine probable cause, or independently determine impairment.
Always follow your agency's policies, applicable law, and current SFST training and instructional materials.
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