# Echorooms — Measure room reverb

> Measure room reverb (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/echorooms/id6776313658 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Utilities, Music
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-06-08
- Data updated: 2026-08-14
- User reviews in markdown: https://appshunter.io/ios/app/echorooms/id6776313658/reviews.md

## What is Echorooms?

Echoroom is a one-tap room reverb meter for podcasts, calls, music rooms, and everyday acoustic checks.

Tap Measure and Echoroom plays a short impulse, listens for the decay, estimates RT60, and gives a plain-language verdict for voice, music, or echo control.

Audio is processed on device. Echoroom stores measurements and decay curves, not recordings, and has no account, ads, tracking, analytics, or subscription.


## Version history (last 5 releases)

### 2.1 — 2026-08-06

Improved typography and accessibility throughout room measurements, saved sessions, and acoustic guidance, with clearer technical labels.

### 2.0.1 — 2026-06-24

This update sharpens the interface and fixes a couple of small display issues for a cleaner, more reliable experience. iPhone is unchanged; still fully on-device.

### 2.0 — 2026-06-21

Echorooms 2.0 — a pro upgrade from one RT60 number to a full acoustics workflow, still 100% offline.

• Speech Intelligibility: STI, %ALcons, and critical distance, computed from your measured RT60 and noise level.
• Noise Rating: the mic listens (no impulse) and reports an NC/NR rating with a spectrum-vs-curve chart and one-knob calibration.
• Bonello modal criterion: enter room dimensions for a stricter pass/fail with a one-third-octave density chart.
• Air-absorption correction for sharper high-band RT60 in large rooms.
• Intelligibility now shows inline on every measurement, and CSV/PNG reports include STI and %ALcons.

All acoustics math is computed on-device and oracle-verified. No account, no network — everything stays on your device.

### 1.2 — 2026-06-15

Echoroom 1.2 adds a room mode calculator and data export:

- Room mode calculator: enter your room's length, width, and height to see every axial, tangential, and oblique bass resonance up to 300 Hz (or more). Includes a frequency map, clustering warnings, Schroeder frequency, and a Louden dimension-ratio grade so you know how evenly your room distributes its standing waves.
- Export measurements as CSV: share all saved readings — including per-band RT60, clarity metrics, and SNR — as a spreadsheet for before/after tracking or further analysis.
- 4 new room targets: Home Cinema, Open Office, Gym / Fitness Studio, and Corridor / Lobby.
- Glossary expanded from 36 to 50 terms, adding room modes, Louden ratios, mode clustering, pressure zones, STI, Helmholtz resonator, perforated panel, and more.

Estimates are a planning guide, not a calibrated lab result. Still 100% on-device with no accounts, ads, tracking, or in-app purchases.

### 1.1 — 2026-06-13

Echoroom 1.1 goes deeper. RT60 per octave band (125 Hz to 4 kHz) plus the broadband summary; clarity and decay metrics (C50, C80, EDT, D50, centre time Ts); room-type targets with a pass/over/under reading; multi-reading averaging with a signal-to-noise quality gauge; a Sabine and Eyring treatment calculator over a bundled 115-material library; 14 room-type targets and a 36-term acoustics glossary, all offline; before/after compare and an exportable report image. Estimates are a planning guide, not a calibrated lab result. Still 100% on-device — no accounts, ads, tracking, or in-app purchases.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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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 2026-08-14.*