Comparison

Audio File Analyzer vs LUFS SLIDER

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio File Analyzer

Analyze audio files by viewing their waveform and real-time amplitude spectrum. Explore frequency components, transcribe speech, and customize display settings. A Pro version offers ad-free viewing and higher resolution analysis.

Highlights
  • Simultaneous waveform and spectrum display
  • Real-time frequency analysis
  • Speech transcription
  • Channel switching (Mix/L/R)
  • Spectrum zooming
  • Pitch meter display
Read full description

This app supports simultaneous display of the "audio waveform" and the FFT-based "amplitude spectrum" (frequency magnitude) for audio files on your device. (FFT: Fast Fourier Transform) You can check the frequency components around the current playback position while playing the file. [Features] - Add audio files from "Files" or songs from "Music" to a playlist within this app. - Simultaneous display of audio waveform and a real-time spectrum linked to the playback position. - Supports both portrait and landscape orientation. - Channel display switching (Mix / L / R). - Displays the peak level of the spectrum and its frequency. - Supports zooming in the frequency direction of the spectrum. - Pitch meter display. - Supports transcription (iOS 26 ~). The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384). [Spectrum Display Settings] - Frequency Axis: Linear, Log - FFT Size: 1024, 2048, 4096, 8192, 16384 (* 16384 is available in the Pro version) - Window Function: Hann, Hamm, Blkman, None - Octave Analysis: FFT, 1/12, 1/6, 1/3, 1, Calc Method: Max, Ave [Transcription screen] (* Available on iOS 26 or later.) Transcribes speech in the selected audio file. The results are divided into recognized speech segments and displayed in cells with their start times. Tap a cell to move to that position. Swipe left on a cell to copy its text. ================================================ [Note] This app can't add songs of the following formats. - Songs from Apple Music, iCloud, iTunes Match - Songs that are protected by digital copyright (DRM) ================================================

About

LUFS SLIDER

Adjust LUFS values for mastering audio with individual compressor, limiter, and gain controls. Features a versatile equalizer with simple or 12-band modes and includes presets for efficient workflow.

Highlights
  • LUFS value adjustment
  • Individual compressor, limiter, gain controls
  • Presets included
  • Simple LOW, MID, HIGH EQ
  • 12-band EQ mode
Features
Read full description

マスタリングではLUFS値を調整できるのが特徴です。コンプレッサー、リミッター、ゲインの調整を個別できる他、プリセットも搭載しています。 イコライザーはシンプルなLOW、MID、HIGHの他、12バンドのモードと切り替え出来ます。 Mastering is characterized by the ability to adjust the LUFS value. In addition to being able to adjust the compressor, limiter, and gain individually, it is also equipped with presets. In addition to the simple LOW, MID, and HIGH, the equalizer can switch between 12-band modes. The equalizer can simply adjust LOW, MID, and HIGH.

Screenshots

Audio File Analyzer4 screens
LUFS SLIDER3 screens

Verdict

The call

The clearest difference is price: Audio File Analyzer at Free against LUFS SLIDER's $0.49. Audio File Analyzer also leads on iOS requirement (18.0 vs 26.5). LUFS SLIDER's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Audio File Analyzer is free to download; LUFS SLIDER costs $0.49 up front. Audio File Analyzer sells 1 one-off in-app purchase. LUFS SLIDER asks for nothing beyond the download.

UpkeepUpdate frequency

Audio File Analyzer ships an update weekly, LUFS SLIDER every 4 days. The most recent releases landed on September 23, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Audio File Analyzer versus LUFS SLIDER: the parameters behind the verdict, then further details
ParameterAudio File AnalyzerLUFS SLIDER
PriceFree — better$0.49
Rating5.0 (1 ratings) — better—
Positive reviews—0.0% of reviews
Number of ratings1 — better—
Update frequencyWeeklyEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better26.5
Further details — not scored
Size6 MB3 MB
Age rating4+4+
DeveloperLoop-Sessions.LLC.YUKIO TOKIWA

Customer experience

Audio File Analyzer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

LUFS SLIDER

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

Audio File Analyzer

One-time1
  • Pro (Remove ads, High-Res analysis)$10.99
None

LUFS SLIDER

No in-app purchases

Questions

Is Audio File Analyzer free?
Audio File Analyzer is free to download, with in-app purchases available.
Is LUFS SLIDER free?
LUFS SLIDER costs $0.49, with no in-app purchases.
Do Audio File Analyzer or LUFS SLIDER have ads?
Audio File Analyzer shows ads; LUFS SLIDER does not.
Which is updated more often, Audio File Analyzer or LUFS SLIDER?
Audio File Analyzer ships an update weekly, and LUFS SLIDER every 4 days. Most recently, Audio File Analyzer was updated on September 23, 2026 and LUFS SLIDER on October 11, 2026.

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