# Lumisound — Sound precisecly visualised

> Sound precisecly visualised (iPhone/iPad app by JACK MOSS.)

- Source: https://appshunter.io/ios/app/lumisound/id6761346520 (this page in markdown: same URL + `.md`)
- Developer: [JACK MOSS](https://appshunter.io/developer/1889032796)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-04-17
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/lumisound/id6761346520/reviews.md

## What is Lumisound?

Lumisound turns audio into a real-time spectrogram. The same kind of visual frequency analysis used in professional audio software, now in your pocket.
Use it for anything. A car engine, musical instrument, room sound, and watch the frequencies unfold in real time, colour-mapped from silence to full scale.

Features:

Real-time spectrogram with colour mapping
Full 20Hz–20kHz frequency range
Peak frequency detection with dBFS readout
Export full session spectrograms as high-resolution images
Audio file analysis
Frequency checker
Clean, minimal interface
File playback
Frequency generator with multiple wave shapes
Decibel meter with exportable trace graph
Input mic selection

And all of this? Free, forever. No ads, subscriptions, or in-app purchases.


## Version history (last 5 releases)

### 1.5 — 2026-08-03

NEW: TUNER
A chromatic instrument tuner built for actually tuning, not just reading out numbers.
• Presets for guitar (standard and drop D), bass and ukulele
• Tap a string to lock onto it, or let it detect automatically
• Each string ticks off as it lands in tune, so you can see what's left
• Press and hold any string to hear its reference pitch
• A subtle haptic tap the moment you hit pitch

NEW: CAPTURE RANGE
Choose the frequency band you want to analyse. Narrowing the range puts all of the detail exactly where you need it.
• Set a custom floor and ceiling
• Presets for music production and automotive diagnostics
• Saved sessions remember the range they were recorded at

IMPROVED
• Noticeably lighter on CPU and battery during live analysis
• Long recordings and imports now stay within a fixed memory budget
• The spectrogram no longer skips frames under load
• Light mode is properly legible across all four themes
• Consistent spacing, type and corners throughout the app

FIXED
• Better tuning accuracy, especially on the higher strings
• Calls and alarms no longer leave a recording stuck mid-capture
• Saved sessions are included in device backups
• Confirmation before clearing an analysis or deleting a session
• A range of stability and memory fixes

### 1.4.1 — 2026-05-19

A quick hotfix for some issues:

Fixed rare crashes when switching microphones.
Fixed microphone selection UI to show Bluetooth microphones.
Optimised themes for quicker application and more support app-wide.
Reduced energy consumption across the app as a whole.
Smoothed FFT for more stable recording FPS.
Switching themes quickly no longer causes temporary app lag.
Refined app description.
Added new animation for first time users when booting app.

### 1.4 — 2026-05-11

1.4 is here with some new features to make Lumisound even better. In this update:

Added input mic selection
Added a decibel meter
Brand new app themes to customise how Lumisound looks
Improved onboarding experience for new users
New and improved app icon
Better performance on CPU and battery
Added a progress bar when importing large files
General boring bug fixes

### 1.3.1 — 2026-05-03

Fixed an issue where you couldn't name your session saves 
Allowed recorded audio to be played back after saving
Cleaned up UI clutter and responsiveness 
General bug fixes

### 1.3 — 2026-04-29

You can now Save and Restore your recording sessions
Added an onboarding experience for new users
New "mark" feature lets you highlight/pinpoint a specific frequency 
UI tweaks and general bug fixes/performance optimisations

## More apps by JACK MOSS

- [Inner Forecast](https://appshunter.io/ios/app/inner-forecast/id6763629982)

All apps by JACK MOSS: https://appshunter.io/developer/1889032796

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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 2026-08-05.*