UtmGrid Reader

UtmGrid Reader turns UTM easting, northing, and 100 km square reading into a fast offline digit-grid drill. It is built for geography students, orienteering club beginners, cadet map courses, and survey-class learners who must build real grid fluency from paper-style grid faces—without GPS, receivers, or live maps. Cold start opens a fullscreen grid-trainer pad: lock the zone number and letter, study the 100 km square face, and type easting and northing digits one key at a time against seeded practice slips. Correct digits light teal; misses flash amber with the true square callout so you correct course immediately. CLASSROOM SLIP PACKS Train with Coastal Quad A, Highland Sheet B, Delta Grid C, and Training Yard D. Packs use real UTM-style answers and false-friend distractor squares. These are classroom drills only—never field routing or navigation. DIGIT CATCHER FLOW Enter easting, then northing, sequentially. Get instant cell-level marking, then reveal the true 100 km square and the full coordinate string. 100 KM SQUARE RECOGNITION Study a labeled grid tile and name the square ID before digit practice unlocks. Build square fluency first, then digit precision. ZONE LOCK & CUSTOM SLIPS Each slip is fixed to one training zone and hemisphere for pure map-class context with zero device location. Instructors and self-learners can save custom zone, square, easting, northing, and short prompt text into local packs. SESSION SCORECARDS After every pack run, review hit rate, mean digits correct, hardest square list, and a retry-missed queue. Everything stays offline. GRID PRIMER Static reference screens explain easting/northing order, 100 km square letters, and how to read a printed grid margin—diagrams only, no live map data. Accessibility-minded large digit type, high-contrast grid lines, and optional reduced-motion feedback. In-app Privacy Policy, Terms of Use, and a short offline-data notice cover locally stored slips, packs, and scorecards. All data on device via local storage. No network required.