# Spektral Mobile

> Spektral Mobile (iPhone/iPad app by Matrix Productions Ltd.)

- Source: https://appshunter.io/ios/app/spektral-mobile/id6760348599 (this page in markdown: same URL + `.md`)
- Developer: [Matrix Productions Ltd](https://appshunter.io/developer/1875094312)
- Category: Music
- Price: $9.99
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English
- Released: 2026-03-23
- Data updated: 2026-08-28
- User reviews in markdown: https://appshunter.io/ios/app/spektral-mobile/id6760348599/reviews.md

## What is Spektral Mobile?

Spektral is a professional real-time audio analyser for sound engineers. Ring out a PA, find the frequency that is howling, and keep an eye on the level in the room, all from your iPhone or iPad.

THREE VIEWS, ONE WORKFLOW
• RTA: live spectrum on a logarithmic frequency scale, 20Hz to 20kHz
• Spectrograph: scrolling time-frequency heatmap, where feedback shows as a persistent bright horizontal line
• SPL meter: A, C or Z weighted, Fast, Slow or Impulse, with the room's history behind it

RING-OUT
Spektral listens for a frequency that is building rather than one that is merely loud, so a bass note or a mains hum cannot set it off. When it finds one it names the frequency, gives you the musical note, and suggests the notch: centre frequency, Q and cut. Confirmed rings stay in a list as you work through them.

LEVEL AND LEQ
• Leq over 1 minute, 15 minutes, 30 minutes, 1 hour and 8 hours, all running at once
• Three hours of level history on one graph, with min, max and average
• Limit Guard: set a limit and a window, and Spektral forecasts how long you have before you reach it
• Calibrate against an acoustic calibrator when you need accurate absolute levels

PRECISION
• 4096-point FFT
• Parabolic interpolation for sub-bin cursor and peak accuracy
• Peak hold with smooth decay
• Smoothing from 1/24 octave through to 1/1
• Frame averaging up to infinite
• Musical note display on peaks and cursor

TOOLS
• Identify: labels the strongest peaks automatically, or just the single worst one
• Snapshot compare: freeze a trace and A/B against it
• Pink noise generator for reference output

TOUCH-OPTIMISED
• Horizontal pinch zooms the frequency axis, vertical pinch zooms the dB range
• Drag to pan when zoomed, tap to place the cursor
• Double-tap to reset all zoom and pan

DESIGNED FOR THE STAGE
• Full-screen dark interface for low-light environments
• Works in portrait and landscape
• Uses the built-in microphone or any connected audio interface

REMOTE MONITORING (optional in-app purchase)
Send this device's SPL readings to Spektral on your Mac over iCloud, so one engineer can watch several positions at once.

No subscriptions. No account required. The analyser runs entirely offline.


## Version history (last 5 releases)

### 2.0.1 — 2026-08-20

Bug fixes

### 2.0 — 2026-08-13

RING-OUT
Spektral now listens for feedback while you work. It looks for a frequency
that is building rather than one that is merely loud, so a bass note or a
mains hum cannot set it off. When it finds one you get the frequency, the
musical note, and a suggested notch: centre, Q and cut. Confirmed rings
collect in a list you can work through.

A PROPER SPL METER
The SPL page has been rebuilt for iPhone and iPad. Leq over 1 minute,
15 minutes, 30 minutes, 1 hour and 8 hours all run at once, with three hours
of level history on one graph and min, max and average underneath.
A, C and Z weighting. Fast, Slow and Impulse.

LIMIT GUARD
Set a limit and a window, and Spektral forecasts how long you have before
you reach it, so you find out while you can still do something about it.

CALIBRATION
A sensible default for the built-in microphone out of the box, and a guided
calibration against an acoustic calibrator when the number has to be right.

IDENTIFY
Choose how many peaks get labelled, down to just the single strongest one.

ALSO
• Pink noise never starts on its own
• Readings say plainly when they are uncalibrated, rather than presenting
  dBFS as though it were dB SPL
• Layout fixes across iPhone sizes: tighter toolbar, symmetric RTA gutters,
  spectrograph range tabs

### 1.7 — 2026-06-08

Spectral analysis data also sent when app is used as a remote listener.

### 1.2 — 2026-05-10

Background reliability fix and idle timer changes when using as a Remote Listener.

General improvements across the board for improved performance on older devices.

### 1.1 — 2026-04-24

• Performance improvements to settings and menus

• Stability improvements for remote listener sessions

• Bug fixes

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## More apps by Matrix Productions Ltd

- [qPlayer](https://appshunter.io/ios/app/qplayer/id6758870264)

All apps by Matrix Productions Ltd: https://appshunter.io/developer/1875094312

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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 2026-08-28.*