Linea puts a whole measuring toolbox on your iPhone: a level, a tape measure, a ruler, a protractor, a rangefinder, a compass, a sound level meter and more, thirteen tools in all. Every result shows its ±, an estimate of how far off it may be. No account, no ads, and no paywall in the middle of a measurement. LEVEL • Surface, edge and plumb: the mode follows how you hold your iPhone. Degrees, percent or inches per foot. • A tick, a tap and a tone at level; the tone follows the tilt and can say the reading. Auto-hold when still. • Camera line: a level and a plumb line through the camera, for pictures, shelves and tiles. • Two-step calibration for your iPhone's own offset. TAPE MEASURE • A point at each end: a length, a height, or chained segments with a total. • Each result's ± is an estimate of its likely error; LiDAR, where your iPhone has it, usually narrows it. A point too far to trust gets a warning. • Area of a rectangle or polygon, or of one it finds itself (Pro). • Box volume in three steps, drawn in the room as you go (Pro). RANGEFINDER • The distance to a wall, with its ±; hold to sweep for the shortest and longest. • A wall's height from two sightings. About 16 ft with LiDAR, 10 ft without; farther, no number. RULER • Inches and centimeters on screen, true to size on your iPhone. ANGLE, TILT AND COMPASS • Camera protractor: arms on a roof, a pipe or a corner, live or on a photo; roof pitch and miter. • Tilt: the slope of a saw blade, a ramp or a rafter; set zero anywhere. • Compass: your heading with its ±, true north if you allow location (only while open), else magnetic. SOUND LEVEL METER • Live dB(A), maximum, average and a 60-second log. About ± 3 dB: an estimate, not a meter for regulations. Nothing is recorded. HISTORY, PROJECTS AND PHOTOS • History keeps every finished result by itself, with its ±, to copy or share; Save files it in a project (Pro). • Measured photos, markup and export (Pro): the tape's picture with each size and its ± where measured; sizes, arrows and text on any photo; a PDF report and CSV. • Send a project by AirDrop, Messages or Mail; whoever gets it can read it (editing needs Pro). PLAN AND CALCULATE (PRO) • Rooms: a project from a job (paint, floor, tiles, wallpaper, a rug); measure a room with the tape or type it in; one shopping list for all rooms, rounded once. • Will it fit: an item's three sizes against your doors, stairs, elevator, alcove or car trunk; each says Fits, Too close to call or Doesn't fit, with its margin and ±. • Calculator: feet-inch fractions or metric, a stair calculator, rafters, paint, tiles, flooring, wallpaper, concrete. • Picture hanging: Plan, Find, Mark, Check; an AR guide draws the nails on the wall, or go by hand. • Levelling anything on feet or wheels, from a motorhome or trailer to a washer, fridge or pool table: each foot or wheel shows how much to turn or block; campsites keep their setup. • Slope targets, crown molding cuts, calibration profiles, saved sound levels and the level on Apple Watch. EVERY TOOL A TAP AWAY Level, Measure and Ruler on the tab bar, or up to three tools you choose (Pro); Tools lists the rest. Widgets show your last result with its ±; controls and Siri open any tool or say your last result. HONEST ABOUT ACCURACY A phone's sensors are not a surveyor's instruments, nor its microphone a calibrated meter, so every result that depends on them carries an estimate of its likely error (±): a guide, not a guarantee. Before a cut that matters, check with a real tool. FREE TOOLS, ONE PURCHASE FOR PRO The level, camera line, tape measure (lengths, heights, chained totals), rangefinder, ruler, protractor, Tilt, compass, sound level meter and History are free, with no ads. Linea Pro is one in-app purchase, never a subscription; Pro features added later come at no extra cost. Offline, with Family Sharing. PRIVATE No account, no analytics. Your measurements stay on your iPhone and in your own iCloud Drive.
Utilities · iPhone, iPad · Free
