Room Acoustics Meter

Name: Room Acoustics Meter
Rating: 3.55 (150 reviews)
Author: Dr. Johann Gaus

LiveDr. Johann Gaus5 apps · 227.1K installsMusic & AudioFreeIn-app purchases: $5.99 - $18.99 per itemcom.hifi_apps.ra_meter

Set up a listening room. Measure frequency, phase, impulse response, waterfall.

Alert me ★ Watch Open in Play ↗

Total installs: 92,375
Installs / day: +51
Rating: 3.5★
Released: 21 Oct 2021
Last update: 3 Sept 2026
Countries: —

Installs per day

gain of the exact counter

Lifetime avg ≈ 51/day (all installs ÷ days since release)

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play

3dAll

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

Shares data with third parties Device or other IDs
No data collected
Data is encrypted in transit
No way to ask for data deletion

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

12 in 4 groups

5 Sensitive3 Notable4 Routine

What this app can do with your phone

Record sound using your phone's microphone
Read photos, videos, and other files saved in your phone's shared storage
Add, change or delete photos, videos and other files in your phone's storage

Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

StorageSensitive2

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

MicrophoneSensitive1

Access to your phone's microphone to record sound

Record sound using your phone's microphonerecord audio · RECORD_AUDIO

OtherNotable7

Access to miscellaneous device features that don't fit other categories

See Bluetooth settings and connect to paired devices like headphones, speakers or watchespair with Bluetooth devices · BLUETOOTH
Change volume and choose which speaker or headset plays soundchange your audio settings · MODIFY_AUDIO_SETTINGS
Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Send system messages that stay stored after sending; heavy use can slow your phonesend sticky broadcast · BROADCAST_STICKY
Connect to the internet to load content and send datafull network access · INTERNET
Make your phone vibratecontrol vibration · VIBRATE

Read more · all 12 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

This app helps to set up a listening room. Connect your Android device to your sound system and start the measurement. Result are curves for frequency response, phase, impulse response. Likewise waterfall diagrams and sound pressure maps can be generated. Features - Measurement via logsweep - Serial function for fast measurement at many microphone positions - Automatic determination of the microphone position based on the sound propagation times - Automatic generation of file names - fast saving of single measurements by OK-click - Frequency response: sum frequency response and windowed - Fade-in of calculated reflections (comb filter) for comparison with the measurement data - Phase: raw data, rolled up and group delay - Impulse response - linear: raw data, smoothed data, step response, energy-time curve - Impulse response - logarithmic: raw data, smoothed data, maximum values, Energy-Time-Curve, Schroeder Curve - Impulse response filter for windowed frequency responses or waterfall plots - Display of tangents of the Schroeder curve for EDT, T15, T20, T30 or freely definable rules - Display of frequency response and impulse response customizable: zoom, curves can be shifted against each other, different orders... - T60 as a function of frequency and comparison with DIN 18041, IEC 60268 13, EBU Tech 3276 (2nd) - Waterfall display (time evolution of frequency response) via wavelet or FFT analysis - Spectrogram representation - Frequency-dependent sound pressure map - Calibration possibilities for the built-in microphone by comparison measurements, if a measurement microphone is available. - Use of measurement microphones (import of calibration curve). - Export of results: in HTML format - Export of measurement data: Impulse response accessible as .wav file and measured values in CSV and .FRD format. - Export of frequency response and phase in .FRD format (allows import and further processing with many audio measurement programs) - English and German

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