# Sound HUD - Decibel Meter — Decibel Meter & Sound HUD

> Decibel Meter & Sound HUD (iPhone/iPad app by Jaime Villalobos.)

- Source: https://appshunter.io/ios/app/sound-hud-decibel-meter/id6815401543 (this page in markdown: same URL + `.md`)
- Developer: [Jaime Villalobos](https://appshunter.io/developer/6810447343)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English
- Released: 2026-09-29
- Data updated: 2026-10-12

## What is Sound HUD?

Sound HUD is a professional real-time acoustic sound level meter (dB SPL) and telemetry dashboard designed with a tactical aviation cockpit head-up display.

KEY FEATURES:
• Real-time high-precision sound level measurement (dB SPL) with zero lag.
• Frequency Weighting Curves: A-Weighting (human ear), C-Weighting (industrial/peak), and Z-Weighting (unweighted flat linear).
• Comprehensive metrics: Continuous equivalent level (LAeq), peak level (Peak Hold), minimum, and maximum sound pressure levels.
• Noise Dose Safety Monitor based on NIOSH standards (85 dBA / 8-hour exposure limit).
• Dynamic historical charts with SwiftUI Charts and selectable time horizons (1m, 5m, 30m).
• Real-time 16-band Fast Fourier Transform (FFT) frequency spectrum visualizer.
• Precise microphone calibration offset (±10 dB) in 0.5 dB increments.
• Acoustic telemetry session report generator with one-tap Markdown and plain text export.
• 4 Tactical Cockpit Themes: Tactical Amber, Neon Cyan, Matrix Green, and Arctic White.
• Light / Dark appearance modes and high-legibility avionics typography (Garmin & Tesla cockpit fonts).
• Complete privacy: 100% on-device volatile audio processing. No audio is ever recorded, stored, or transmitted to any server.

SOUND HUD PRO:
Unlock unlimited real-time FFT spectrum analysis, unlimited telemetry report exports, and remove all advertisements permanently with a single lifetime purchase.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sound HUD PRO Lifetime | $4.99 | one-time |


## Is Sound HUD safe?

Not enough ratings yet to assess Sound HUD.

## Is Sound HUD legit?

Sound HUD - Decibel Meter has limited verification signals. The AppsHunter Legitimacy Score for Sound HUD is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-10-05

- Full trilingual support (English, Spanish, Portuguese) across all HUD metrics, settings, and reports.
- Enhanced real-time acoustic metering and background interruption handling.
- 24-hour frequency spectrum unlocks with persistent session tracking.
- Improved NIOSH acoustic dosimeter and telemetry export reliability.
- General performance and UI stability improvements.

### 1.0 — 2026-09-29

No release notes.

## More apps by Jaime Villalobos

- [Cacha Chile: Trivia Chilena](https://appshunter.io/ios/app/cacha-chile-trivia-chilena/id6810447341)
- [Workout Monitor](https://appshunter.io/ios/app/workout-monitor/id6811075383)
- [Mesa Chilena: Recetas de Chile](https://appshunter.io/ios/app/mesa-chilena-recetas-de-chile/id6811619399)
- [GPS Info Telemetry](https://appshunter.io/ios/app/gps-info-telemetry/id6812743872)
- [Conversion Manager](https://appshunter.io/ios/app/conversion-manager/id6813106206)
- [HydroPulse Hydration Tracker](https://appshunter.io/ios/app/hydropulse-hydration-tracker/id6814643922)

All apps by Jaime Villalobos: https://appshunter.io/developer/6810447343

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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 2026-10-12.*