One install replaces a bag of basics
Bubble, linear, plumb, slope, and reference angle — all built in, all free.
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Live · Android
Precision Utility · Android
ProLevel
Five precision tools. One app. Free.
ProLevel turns your phone into a complete leveling toolkit — bubble level, linear level, plumb bob, slope calculator, and reference angle matching. No subscriptions. No account.
5Precision Tools
FreeNo subscription
0Accounts required
$0.99Remove ads (optional)
Why ProLevel
Built like a real tool.
No subscription. No account. No catch.
Core tools are always free. The only optional purchase is a one-time $0.99 to remove the banner ad.
Motion sensors only. Nothing else.
No camera, no location, no account. Preferences stay on your device.
Works outdoors, with gloves, in any orientation.
Large touch targets, brightness boost, wake lock, and screen reader support keep it usable on the job site.
Feature Highlights
What's inside.
Bubble Level
Track pitch and roll simultaneously with color feedback — just like a physical level.
Linear Level
Angle, rise per foot, and mm/m readouts in portrait or landscape.
Plumb Bob
Color feedback guides you to true vertical for walls, posts, and framing.
Slope / Incline
Percent grade, rise per foot, and 1:X ratio with a visual slope indicator.
Reference Angle
Lock a target angle, then see the live difference for precise bevels and custom cuts.
Built to Work
Use ProLevel flat or upright in any orientation and keep measurements readable in real work conditions indoors or outdoors.
Screenshots
See it in action.
Bubble
Linear
Plumb
Slope
Power Features
Made for serious use.
What's included
- Tone alert and single haptic pulse when level is reached
- Reading lock, long-press quick capture, and MAX angle tracking
- Angle log with up to 20 readings per session and export support
- Stable / Moving / Shaking indicator for better confidence in readings
- Adjustable level zone sensitivity from 0.1° to 2.0°
- Brightness boost, wake lock, metric and imperial units, and precision toggle
- Calibration that persists across restarts plus up to 5 named calibration profiles
- Light and dark mode with 17 premium themes across 5 packs
Accessibility & Pricing
- Text size options from Small to X-Large
- Reduce Motion toggle for motion-sensitive users
- Large touch targets for use with work gloves
- Screen reader support with live angle announcements
- All core tools and features are free with no subscription
- Bottom banner ad in portrait only, removable with a one-time $0.99 purchase
- Premium themes available individually, in packs, or as a full bundle
FAQ
Quick answers.
Do I need to calibrate ProLevel?+
Calibration is available for maximum accuracy and the app can save named calibration profiles, but you can start using the tools immediately after install.
What does the Remove Ads purchase do?+
It permanently removes the bottom banner ad in portrait mode. It does not lock or unlock any core measurement feature.
What permissions or data does ProLevel use?+
The app uses motion sensors for measurement and can use vibration, wake lock, and internet access for ads. It does not require camera, microphone, or account access.
Is there an iOS version?+
Not yet — ProLevel is Android only for now. An iOS version is planned. If you want it sooner, letting us know through Discord or the contact form helps prioritize it.
Need Help?
Questions about ProLevel?
Reach out through the contact form or jump into the TonyBytes Discord for faster feedback.
App Development ◆ Web Development ◆ Discord Communities ◆ Chicago Bulls · MTV · DEFCON ◆ No Subscriptions · Ever ◆ 1M+ Members Managed ◆ ProLevel on Google Play ◆ Coding Since 1994 ◆ TonyBytes LLC ◆ App Development ◆ Web Development ◆ Discord Communities ◆ Chicago Bulls · MTV · DEFCON ◆ No Subscriptions · Ever ◆ 1M+ Members Managed ◆ ProLevel on Google Play ◆ Coding Since 1994 ◆ TonyBytes LLC ◆