🧰 ProLevel — Precision Level & Angle Tools

Turn your phone into a professional-grade level. 5 precision tools in one app — no subscriptions, no accounts required.

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🔵 BUBBLE LEVEL — Place flat on any surface. Shows pitch and roll with colour feedback.

📏 LINEAR LEVEL — Single-axis for edges and surfaces. Shows angle and rise per foot.

📍 PLUMB BOB — Check true vertical alignment with colour accuracy feedback.

📐 SLOPE CALCULATOR — % grade, rise/ft and ratio simultaneously. Great for ramps.

🎯 REFERENCE ANGLE — Set any target angle, capture live, see exact difference.

Every tool reads correctly held flat, upright or sideways — in portrait or landscape.

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⚙️ FEATURES

🔊 Tone alert when level is reached
📳 Single haptic pulse on level entry
🔒 Reading lock — freeze measurements instantly
📊 Angle log — save up to 20 readings per session
📤 Export angle log — share or copy to clipboard
📡 Stability indicator — Stable / Moving / Shaking
🎯 Adjustable level zone sensitivity (0.1° to 2.0°)
🔆 Outdoor Mode — maximum-contrast display for bright sunlight
📱 Screen wake lock while working
🎚 Readout detail toggle (0.1° or 0.01°)
📏 Imperial and metric support
📐 Calibration profiles — save up to 5 named offsets, with export/import
🔄 One-tap reset to factory zero
📈 MAX angle tracker per session
🌗 Light and dark themes, plus 15 more with Pro
♿ Accessibility — large text, reduce motion, glove-friendly touch targets
✈️ Works fully offline — no connection needed to measure

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🎨 THEMES

17 themes in total. Default Light and Default Dark are free. The other 15 — grouped into Nature, Dark, Technical, Holiday and Ice packs — come with ProLevel Pro. Each has its own colour scheme and alert sound.

Tap any locked theme to try it for real before you buy.

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💸 NO SUBSCRIPTIONS. NO PAYWALLS.

All 5 measuring tools are completely free, forever. No accounts required.
Small bottom banner ad in portrait only.
One optional purchase — ProLevel Pro, $2.99 — removes the ads and unlocks all 15 extra themes.
Purchases restore automatically on reinstall.

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📐 ABOUT ACCURACY

ProLevel reads your phone's built-in accelerometer, typically accurate to a few tenths of a degree after calibration. For structural or code-compliance work, confirm with a calibrated instrument.

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🔐 PRIVACY

Uses device motion sensors only. No camera, mic, or location data collected. Privacy policy: https://tonybytes.com/apps/privacy.php?slug=prolevel

💬 Community: https://discord.gg/U44saPY6Qd
🌐 Website: https://tonysbytes.com
📧 support@tonysbytes.com

Developed by TonyBytes