Level Tool vs Trueline

PocketLevel turns your iPhone into a precision spirit level and measurement toolkit. Hang pictures perfectly straight, level shelves and furniture, check slopes and measure angles — with big, sunlight-readable numbers and pro-grade accuracy. BUBBLE LEVEL Bullseye level for flat surfaces and bar level for walls and frames. The display turns green with a haptic tap the moment you hit level. Adjustable tolerance from 0.2° to 2.0°. CALIBRATION Two-step calibration against any reference surface corrects for your phone's camera bump and case — the number one cause of inaccurate phone levels. Your calibration is saved per orientation. ANGLE FINDER Full 360° protractor with live readout to a tenth of a degree. Set any angle as zero for relative measurements, and read slopes as degrees or percent — perfect for roof pitch and ramps. SAVE YOUR READINGS Freeze any reading with a tap and save it with a name, like "Top shelf" or "Table saw blade". BUILT FOR REAL WORK - Big monospace numbers you can read in bright sunlight - Screen stays awake while you measure - No ads, no popups, nothing interrupting your measurement - Works fully offline - All processing on your device — no data collected PocketLevel Plus subscription is required to use the app. Plans: $2.99 per week with a 3-day free trial for new subscribers, or $24.99 per year. Prices may vary by region. Payment is charged to your Apple ID account at confirmation of purchase or after the free trial. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. Terms of Use: https://kelotech.github.io/pocketlevel_legal/terms-of-service/ Privacy Policy: https://kelotech.github.io/pocketlevel_legal/privacy-policy/

Trueline turns your iPhone into a level that behaves like a real instrument — quiet, readable, and honest about what it measures. Free: • Auto-switching modes — on edge or plumb you get a vial with a signed degree readout; laid flat it becomes a 2-axis bullseye surface level • Read in degrees, slope %, or roof pitch (rise per 12) • One-tap calibration • HOLD freezes a reading you can't see from where you're standing • ZERO for relative angles — the angle between two surfaces • Haptic snap and a green edge glow the moment you're level • Fully offline, no account Pro — one payment of $6.99, no subscription: • AR laser level: project gravity-true level and plumb lines onto the wall and hang a whole row of frames in one pass • Named angle presets — 4/12 and 6/12 roof pitch, stair rake, 2% drainage • Precision tolerance down to ±0.1° • 5 instrument themes • No ads Pay once, yours forever. No subscription, no sign-in, and nothing leaves your phone.