You measure from the corner, not from somewhere near it. So does PlanTape. Ten seconds from opening the PDF to a dimension you would put your name to.
HOW DOES IT KNOW THE SCALE?
The same way you would: it reads the dimensions the designer printed on the sheet, and sets the scale from them as the plan opens. The scale card is tagged Auto; tap it and it shows you the dimension it trusted, so you can judge it yourself.
WHAT IF THE SHEET HAS NO DIMENSIONS?
Trace one you know, type its length, and the sheet is to scale. The way you would check a print with a scale rule, without the rule.
WHAT DOES THE TAPE SNAP TO?
The points a tradesperson actually measures between: corners, line ends and the crossings of the drawing's own lines. Tap near a corner and the point takes it. On a busy sheet, drag: a magnifier shows the cursor pulling onto the line, and a tick tells your hand it has landed.
WHAT CAN I MEASURE?
• Runs, point to point, every segment labelled and a running total
• A length on the fly, without leaving a mark
• Areas, rectangles or free shapes, with side lengths
• In millimetres and metres, or feet and fractional inches
CAN I CHECK THE BUILD AGAINST THE PLAN?
Yes, the way an inspector does. Name a measurement, give it the nominal size and a tolerance, and read PASS or FAIL.
CAN I MARK IT UP?
Freehand, arrows, rectangles, ellipses and sticky notes, in your colour and line width. Arrows, shapes and notes snap to the same lines the tape does, so an arrow points at the corner, not beside it.
WHERE DO MY PLANS GO?
Nowhere. Every PDF you open stays in a library on your phone with its measurements and notes, sorted into projects and tags, revisions of the same drawing grouped together. Nothing is uploaded. The app sends pseudonymous usage counts (feature counts and approximate location) to help improve it; switch them off in Settings → About → Privacy.
CAN I HAND IT ON?
Export a flattened PDF with your marks burned in, an image, or a take-off summary as CSV or a one-page PDF, through the share sheet.
WHAT ABOUT MULTI-PAGE SETS?
Each page keeps its own scale, and a review table shows which pages are set, unsure or scanned.
WILL THE SCREEN GO DARK MID-MEASUREMENT?
No. It stays awake while a plan is open.
DOES IT WORK IN THE BASEMENT?
No signal, no account, no cloud. It works where plans get read.
WHAT ABOUT SCANNED PLANS?
They open too. Set the scale yourself and measure freely. Snapping and automatic scale need a vector PDF, the kind exported from CAD, because that is where the lines are.
WHO IS IT FOR?
Anyone with a plan and a question. On iPhone and iPad.
Measurements come from the drawing's own lines and the scale you set. Treat them as a working aid, as you would any print, and check critical dimensions on site.
First release. We're listening.
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