# Decibel Meter: dB Noise Level — SPL Sound Meter & Noise Alarm

> SPL Sound Meter & Noise Alarm (iPhone/iPad app by Thirty Three Apps.)

- Source: https://appshunter.io/ios/app/decibel-meter-db-noise-level/id6811913840 (this page in markdown: same URL + `.md`)
- Developer: [Thirty Three Apps](https://appshunter.io/developer/1887900142)
- Category: Utilities, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 12 MB
- Languages: American English
- Released: 2026-10-25
- Data updated: 2026-11-05

## What is Decibel Meter?

Decibel Meter shows how loud it is the moment you open it. No sign-up, no paywall, no waiting: a big dB number, a gauge, min / average / max and a live 60-second curve.

Then comes the fun part. Set a limit, and when the room stays too loud, a funny voice yells at it. Grumpy Grandpa, Santa, a robot, a cowboy, a cartoon mouse, a demon… 17 recorded voices, or record your own line ("Kids, bedtime!") and let the phone say it for you. Made for classrooms, noisy kids, open offices and roommates.

SOUND LEVEL METER
• Live dB reading within a second of launch
• Gauge with a draggable limit line
• Min, average (Leq) and max for the session
• 60-second curve and a reference chart (whisper 30 dB, traffic 70 dB, concert 110 dB)
• One-tap calibration against another meter, applied to every number
• Keeps measuring with the screen locked, with a Live Activity on the lock screen and in the Dynamic Island
• Session history with a per-second timeline, notes and CSV export
• iPhone and iPad, portrait and landscape

PIPE DOWN ALARM
• Pick a limit (60, 70, 85 dB or your own) and how long the noise has to last
• A random funny voice, Grumpy Grandpa, or your own recorded sounds
• Red screen flash and vibration
• Repeats while it stays loud, then goes quiet
• "Times too loud today" counter

SCREAM BATTLE
• 2–6 players, a word appears, everyone screams it in turn
• Loudest scream wins the trophy, with confetti and Grandpa announcing the winner
• Every scream saved as a curve, all-time record and a leaderboard by name

BABY MODE
• Listens for crying and answers with your own recorded voice (a lullaby, a long shhh), a shhh rhythm, or pink / white / rain noise
• Soothes for 30 seconds to 30 minutes, or until the room is quiet
• Keeps listening all night with the screen locked
• Adjustable cry level and how long the crying has to last
• Notification when the baby cries again, bedtime reminder

PRIVACY
Measurements are never recorded or uploaded: the sound level is computed on your device. Audio is saved only when you record your own alarm or baby sound, and it stays on your device.

Free, with a small banner ad. No subscription.

## Is Decibel Meter safe?

Not enough ratings yet to assess Decibel Meter.

## Is Decibel Meter legit?

Decibel Meter: dB Noise Level appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Decibel Meter is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-31

• Baby mode: soothing sounds are much louder and play longer (10 minutes by default, or until it's quiet)
• Baby mode keeps listening all night with the screen locked
• The meter no longer switches itself on after Baby mode or Scream Battle: it stays off until you tap Start
• A hint when your phone's volume is too low to hear the alarm
• Dark launch screen and small fixes

### 1.0 — 2026-10-25

No release notes.

## More apps by Thirty Three Apps

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- [Chika: My Anime AI Girlfriend](https://appshunter.io/ios/app/chika-my-anime-ai-girlfriend/id6762823224)
- [Face Mashup: Funny Filter Game](https://appshunter.io/ios/app/face-mashup-funny-filter-game/id6770503868)
- [Time Warp Scan: Face Filter](https://appshunter.io/ios/app/time-warp-scan-face-filter/id6779604547)
- [Lie Detector Test: Truth Prank](https://appshunter.io/ios/app/lie-detector-test-truth-prank/id6782049456)

All apps by Thirty Three Apps: https://appshunter.io/developer/1887900142

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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 2026-11-05.*