# Sound Meter & Level Tools — Spirit Level, Stud Finder, SPL

> Spirit Level, Stud Finder, SPL (iPhone/iPad app by Anthony Tan.)

- Source: https://appshunter.io/ios/app/sound-meter-and-level-tools/id6755042830 (this page in markdown: same URL + `.md`)
- Developer: [Anthony Tan](https://appshunter.io/developer/1714762952)
- Category: Utilities, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: American English
- Released: 2025-11-12
- Data updated: 2026-07-31
- User reviews in markdown: https://appshunter.io/ios/app/sound-meter-and-level-tools/id6755042830/reviews.md

## What is Sound Meter & Level Tools?

Turn your iPhone into a complete toolkit with 15+ professional tools — all free, no ads, no subscriptions.

PRACTICAL TOOLS
• Spirit Level — 2D bubble level for hanging pictures, checking surfaces, and leveling furniture
• Metal Detector — find studs in walls, locate pipes, and detect metallic objects with haptic feedback
• Decibel Meter — measure sound levels (dB) with real-time display and OSHA safety warnings
• Vibration Analyzer — diagnose equipment issues and detect vibration patterns
• G-Force Meter — measure vehicle acceleration and impacts

COMPASS & NAVIGATION
• Digital compass with magnetic heading and cardinal directions
• GPS coordinates (latitude, longitude, elevation)
• Real-time altitude calculator using barometer + GPS
• Tilt-compensated orientation for accurate readings

SENSOR DASHBOARD
Monitor 10+ phone sensors in real-time:
Accelerometer • Gyroscope • Magnetometer • Barometer • GPS • Proximity • Light • Battery • Sound • Pitch

FLASHLIGHT & LIGHTING
• LED flashlight with instant toggle
• Strobe light (1–20 Hz) for parties and events
• SOS morse code signal for emergencies
• Red light mode to preserve night vision
• Screen light with customizable colors
• Auto-off timer

CONCERT MODE
Stand out at concerts, festivals, and live events:
• Scrolling text messages with emoji support
• 10+ templates (MARRY ME, HAPPY BIRTHDAY, I LOVE MUSIC)
• Beat-sync strobe — flashlight pulses to music rhythm
• Color effects and animations
• Share to TikTok, Instagram, and Snapchat

AUDIO ANALYSIS
• Beat detection for music-reactive lighting
• Pitch detection — identify musical notes
• Sound frequency analysis with FFT

WHO IS THIS FOR?
• Home improvement — hang pictures straight, find studs, check surfaces
• Construction & DIY — level measurements, metal detection, vibration
• Outdoor & hiking — compass, altitude, GPS coordinates
• Concerts & festivals — lighting effects, scrolling text, strobe
• Students — physics demonstrations, sensor exploration
• Sound engineers — decibel monitoring, pitch detection

WHY THIS APP?
• 100% FREE — every tool included, no paywalls
• Works OFFLINE — no internet needed for most tools
• LIGHTWEIGHT — under 35 MB, low battery usage
• PRIVATE — all sensor data stays on your device
• ONE APP replaces a dozen single-purpose tools


## Version history (last 5 releases)

### 1.1.8 — 2026-07-26

bug fix

### 1.1.7 — 2026-06-25

bug fix

### 1.1.6 — 2026-04-20

bug fixes

### 1.1.5 — 2026-02-27

updated altitude meter and accelerometer tool

### 1.1.4 — 2026-01-15

Improved concert mode UI

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## More apps by Anthony Tan

- [RTF - Scan & Upload](https://appshunter.io/ios/app/rtf-scan-and-upload/id6471074037)
- [8udget: Budget Finance Tracker](https://appshunter.io/ios/app/8udget-budget-finance-tracker/id6503930426)
- [Live 4D Results Toto-Anini 4D](https://appshunter.io/ios/app/live-4d-results-toto-anini-4d/id6744145214)
- [Decidr - Yes No Decision Maker](https://appshunter.io/ios/app/decidr-yes-no-decision-maker/id6756568546)
- [Waitopia: Gamified Screen Time](https://appshunter.io/ios/app/waitopia-gamified-screen-time/id6759971344)

All apps by Anthony Tan: https://appshunter.io/developer/1714762952

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-31.*