Trueline: Level Tool

Bubble, Laser & Angle Finder

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

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.

Ratings & Reviews

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Performance and stability improvements throughout the app, plus a handful of small fixes for faster, more accurate readings.

Version 1.1

The developer, Edge Analytics s.r.o., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Edge Analytics s.r.o.
Size
13.1 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 30 more
  • English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Peter Sutarik
  • Developer Website
  • Privacy Policy

    • More by Edge Analytics s.r.o.

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