"Useful Level" is a free app that instantly transforms your smartphone into a high-precision digital spirit level. With its simple, easy-to-read screen design and intuitive operation that anyone can use, it's perfect for everyone from DIY beginners to professionals.

---

✨ Perfect for These Situations

- Leveling picture frames and shelves
- Adjusting washing machines and refrigerators
- Setting up tables while camping
- Adjusting tripods for photography
- Precise measurements in DIY projects
- Renovations and room rearrangements
- Checking bed and sofa placement

---

🖥️ 3 Innovative Display Modes

1. Bubble Display Mode
A fully digitized version of the traditional bubble level. When the red dot enters the center circle, you've achieved level. Visually intuitive, even first-time users can use it without confusion. The satisfying moment when it turns green feels like a game achievement.

2. Digital Display Mode
Large numbers show the angle. Capable of precise measurements to 0.1-degree increments. Perfect for those who want accurate numerical confirmation.

3. Dual-Axis Display Mode
Displays X-axis and Y-axis independently. Check left-right tilt and front-back tilt simultaneously. Even complex adjustment tasks become efficient with this mode.

---

🛠️ Numerous Convenient Features

- Angle Lock Function:
Record a reference angle and compare it with other locations. Tasks like "I want to match this angle" become surprisingly simple.

- Max/Min Recording:
Automatically records maximum and minimum tilt during measurement. Even in vibrating or shaking environments, you can comprehensively grasp measurement values.

- Measurement History Saving:
Save important measurement results with notes. Date and time are automatically recorded, so you'll never struggle to remember "What was that measurement?" Can also be used for construction records and work logs.

- High-Precision Calibration:
Revolutionary feature that works even with your phone case on. Reset zero degrees to match any surface, enabling accurate measurements in any environment. Of course, you can reset to defaults anytime.

- Vibration Feedback:
Notifies you with vibration the moment level is achieved. No need to keep watching the screen—focus on your work. Perfect for locations where sound isn't appropriate.

- Full Dark Mode Support:
Eye-friendly dark theme for comfortable work in dim locations. Syncs with system settings or can be manually toggled.

---

🎯 Equipped with Accuracy Indicator

## Displays current measurement accuracy in 4 levels
- Excellent (Green): Within ±0.5 degrees
- Good (Yellow-Green): ±0.5 to 2 degrees
- Fair (Orange): ±2 to 5 degrees
- Needs Adjustment (Red): Over ±5 degrees
Measurement reliability is clear at a glance.

---

⭐ Recommended for

- DIY enthusiasts
- Photography perfectionists
- Those moving or rearranging rooms
- Camping and outdoor lovers
- Organization enthusiasts
- Those checking rental properties

---

📌 Main Features Summary

- 3 display modes (Bubble, Digital, Dual-axis)
- High-precision sensor measurement (0.1-degree increments)
- Measurement history saving
- Angle lock & comparison function
- Calibration function
- Vibration feedback
- Dark mode support

---

📲 Download Now

Transform your smartphone into the ultimate measuring tool.
Install "Useful Level" now and start making professional measurements today!