RFMapper Drive Planner — Tablet Edition

One app for planning a drive test, driving it, and surveying the buildings at either end. Pick an area and it pulls the roads from OpenStreetMap, then paints your progress against that plan as you drive — so “how much of this suburb have we covered” has an answer rather than an estimate. Alongside it: GPS trails with autosave, field notes, floor-plan annotation for indoor work, Wi-Fi signal survey, and an Android Auto screen showing coverage on the car display.

The part worth dwelling on is what it does with roads nobody has described properly. OpenStreetMap carries surface and access tags on only a fraction of its network, so the planner treats “sealed”, “unsealed” and “not recorded” as three separate answers you can include or exclude. Most tools quietly assume the third is the first. The same rule runs through the exports: an unmeasured value is an empty cell, never a plausible zero.

Nothing leaves the device unless you switch it on — upload is opt-in and defaults to off, with no server credentials compiled into the app; they are entered on the device and stored encrypted. Blank cells in an export are deliberate: where the platform reported no altitude, speed, bearing or signal, the column is empty — a zero would read as sea level, stationary, due north, or a measured reading. And the map works before the GPS does: it opens where you last left it, so a survey planned yesterday is still on screen today. Built for tablets on Android 10 and later, targeting Android 16, sideloaded — no app store listing.