# mimigarKEEN — Ultrasonic SPL meter

> Ultrasonic SPL meter (iPhone/iPad app by Evixar Inc..)

- Source: https://appshunter.io/ios/app/mimigarkeen/id6786990176 (this page in markdown: same URL + `.md`)
- Developer: [Evixar Inc.](https://appshunter.io/developer/882691720)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2026-07-13
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/mimigarkeen/id6786990176/reviews.md

## What is mimigarKEEN?

KEEN is a sound pressure level (SPL) meter specialized for the 18–20 kHz ultrasonic band. It lets you easily check sounds near the upper limit of the audible range — often outside the scope of ordinary sound level meters — using an iPhone and a measurement microphone.

FEATURES
- Real-time sound pressure level (dB SPL) display for the 18–20 kHz band
- Switchable time weighting (Fast 125 ms / Slow 1000 ms)
- Supports USB measurement microphones (such as the Dayton Audio iMM-6C)
- Automatically applies per-microphone calibration data
  - Detects the microphone's serial number on connection and fetches its registered calibration data
  - Also supports entering the identifier printed on the microphone or scanning its QR code
  - Calibration files can be imported as well
- Manual calibration with a pistonphone (94 dB SPL @ 1 kHz)

NOTES
- For accurate measurement in the 18–20 kHz band, we recommend using a supported external measurement microphone with its calibration data applied (high-frequency sensitivity is not guaranteed with the built-in microphone).
- Microphone access permission is required for measurement.


## Version history (last 1 release)

### 1.0.0 — 2026-07-13

No release notes.

## More apps by Evixar Inc.

- [SAKURA -JAPAN IN THE BOX-](https://appshunter.io/ios/app/sakura-japan-in-the-box/id1140092263)
- [mimigar](https://appshunter.io/ios/app/mimigar/id1255363631)
- [G・Marc](https://appshunter.io/ios/app/gmarc/id1322359688)
- [mimigarFFT](https://appshunter.io/ios/app/mimigarfft/id1345825370)
- [UDT Sorahaku](https://appshunter.io/ios/app/udt-sorahaku/id1351100873)
- [mimigarAR](https://appshunter.io/ios/app/mimigarar/id1414714644)

All apps by Evixar Inc.: https://appshunter.io/developer/882691720

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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 2026-08-22.*