BiPi Bubble Level with Sound

BiPi started with a shelf. I wanted to put up a shelf at home and, being on my own, I downloaded a bubble level app. But there were ads everywhere. Then I discovered a bigger problem. While holding the phone under the shelf, I couldn't see the screen. I was trying to level something with a tool I couldn't actually look at. So I thought: what if it could talk to me? I imagined a sound that changed as I moved closer to level, almost like a radar. Then stereo sound made it even easier to understand exactly where I was. That became BiPi. A bubble level designed to be heard, not just seen. HOW IT WORKS The beeps get faster as you get closer to level. At 0.0°, you hear one continuous tone. You do not need to look at the screen. WHAT YOU CAN DO • Level with sound, without watching the screen • Choose a sound: Metal Detector, Radar Lock or Stereo • Stereo shows the direction: sound on the left means it tilts to the left • Measure on the X axis, the Y axis or both together • Calibrate any surface as your new zero • Hold: lock an angle to measure slopes, not only flat surfaces • Work Mode keeps the screen on and turns on the flashlight • Dark theme, 18 languages, works offline GREAT FOR Hanging pictures, mounting TVs, installing shelves, aligning furniture, setting up cameras, leveling caravans and RVs, DIY and repair work. FREE VERSION • Bubble level with all measuring modes • Metal Detector sound • Calibration and Work Mode • No banner ads and no pop-up ads PREMIUM • Radar Lock and Stereo sounds • Target angle: choose an angle like 1° or 2°, and Radar Lock and Stereo guide you to it • Hold, to lock an angle • Saved measurements you can copy and share • Fine scale: zoom into 0–2° to see and hear small differences You can choose a monthly subscription, a yearly subscription or a one-time Lifetime purchase. You can also watch a short ad to unlock Premium for a limited time. This is always your choice. GOOD TO KNOW Accuracy depends on your phone's sensors. For best results, calibrate on a known flat surface. MADE BY AN INDEPENDENT DEVELOPER BiPi is made with care by an independent developer in İzmir, Turkey. WELCOME GIFT Every new user gets 14 days of Premium as a gift. You do not need a card or a subscription. After 14 days, BiPi goes back to the free version automatically. PRIVACY BiPi uses Firebase Analytics and Crashlytics to understand app usage, improve the experience and fix crashes. The optional reward ads are shown by Unity.