---
title: "GMIS - Acoustic Calculator - Reviews, Revenue and Downloads in France | Apple App Store"
description: "GMIS - Acoustic Calculator delivers fast, consistent, field‑grade computations for acousticians and environmental noise professionals.  What's inside: • Fundamentals: Wavelength, Frequency, Speed of S"
---

# GMIS - Acoustic Calculator — France

![GMIS App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/4d/44/06/4d44066a-59c1-83d7-9d08-4fd3914a40a9/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Unknown](https://apptail.io/developer/unknown-qRhVS) (Türkiye)
**Category:** Utilities
**Rating:** N/A (0 ratings)
**Price:** €9.99
**Bundle ID:** com.gmis.acousticcalculator
**Store:** Apple App Store
**Country:** France
**Version:** 1.1.0 (released 2026-03-20)
**Original Release:** 2025-09-25
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/fr/app/app/id6751337081)
**AppTail Page:** [https://apptail.io/app/gmis-acoustic-calculator-lNRw/france](https://apptail.io/app/gmis-acoustic-calculator-lNRw/france)

## GMIS Description
GMIS - Acoustic Calculator delivers fast, consistent, field‑grade computations for acousticians and environmental noise professionals.

What's inside:
• Fundamentals: Wavelength, Frequency, Speed of Sound, Acoustic Delay, Directivity Index, Doppler Effect, Acoustic Impedance, Blade Pass Frequency, Bragg's Law, Coincidence Frequency, Mach Number, Noise Exposure & Allowed Time, Needed/Potential Acoustic Gain.
• Decibel tools: dB calculator; SPL / SWL / SIL; Weighting Converter (dBZ ↔ dBA ↔ dBC).
• Quantifying noise: Ldn, Lden, SEL, NPL for standardized assessment.
• Outdoor propagation: SWL↔SPL (full/spherical/hemispherical), distance attenuation; point/line/plane source models; barrier attenuation.
• Room Acoustics: Reverberation Time (RT60) with material catalog & frequency chart; Room Mode Calculator with 3D visualizer.
• Resonators: Helmholtz, Perforated Panel, Slotted Panel, Wood Slats & Membrane Panel resonance frequency calculators.
Designed for experts: fast input, metric units, field‑first UX. One‑time purchase, no ads, offline logic.

## GMIS Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3a/3b/3f/3a3b3f9d-8f3e-98cf-10ce-183f22e25e35/GMIS_1_6.5.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/41/4b/c9/414bc9af-906c-06f3-f9d9-df72df9b7669/GMIS_2_6.5.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/87/dd/d8/87ddd8f6-3546-21bb-1031-3b0100a97575/GMIS_3_6.5.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/18/48/d8/1848d8c5-29f2-9d03-1ad6-85204c1c346c/GMIS_5_6.5.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1d/ac/64/1dac64b3-a3ee-2824-6dbe-0676fbc64783/GMIS_4_6.5.png/1284x2778.png)







## GMIS Available In
- [Azerbaijan](https://apptail.io/app/gmis-acoustic-calculator-lNRw/azerbaijan)
- [Germany](https://apptail.io/app/gmis-acoustic-calculator-lNRw/germany)
- [France](https://apptail.io/app/gmis-acoustic-calculator-lNRw/france)
- [Malaysia](https://apptail.io/app/gmis-acoustic-calculator-lNRw/malaysia)

---

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