Audio File Analyzer vs LUFS SLIDER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Simultaneous waveform and spectrum display
- Real-time frequency analysis
- Speech transcription
- Channel switching (Mix/L/R)
- Spectrum zooming
- Pitch meter display
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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) ================================================
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.
- LUFS value adjustment
- Individual compressor, limiter, gain controls
- Presets included
- Simple LOW, MID, HIGH EQ
- 12-band EQ mode
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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
Verdict
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
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.
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.
| Parameter | Audio File Analyzer | LUFS SLIDER |
|---|---|---|
| Price | Free — better | $0.49 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Loop-Sessions.LLC. | YUKIO TOKIWA |
Customer experience
Audio File Analyzer
LUFS SLIDER
In-app purchases
Audio File Analyzer
- Pro (Remove ads, High-Res analysis)$10.99
LUFS SLIDER
No in-app purchases
Questions
Is Audio File Analyzer free?
Is LUFS SLIDER free?
Do Audio File Analyzer or LUFS SLIDER have ads?
Which is updated more often, Audio File Analyzer or LUFS SLIDER?
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