# loudness CORRECT · Normalizer — LUFS · True Peak · R128 · ATSC

> LUFS · True Peak · R128 · ATSC (iPhone/iPad app by Sascha Hoemske.)

- Source: https://appshunter.io/ios/app/loudness-correct-normalizer/id6768704949 (this page in markdown: same URL + `.md`)
- Developer: [Sascha Hoemske](https://appshunter.io/developer/1893424804)
- Category: Music, Utilities
- Price: $17.99
- Age rating: 4+
- Requires: iOS 16.0 · 6 MB
- Released: 2026-05-13
- Data updated: 2026-09-01
- User reviews in markdown: https://appshunter.io/ios/app/loudness-correct-normalizer/id6768704949/reviews.md

## What is loudness CORRECT · Normalizer?

loudness CORRECT measures, corrects and verifies your audio to any
broadcast or streaming loudness spec — fully offline, on iPad and iPhone.

Pick a file, pick a preset, correct. The two-pass pipeline measures
the source to ITU-R BS.1770-4, plans the gain move, writes a new file
and re-verifies the result — so what leaves the app is provably on
target, not just close.

WHY IT'S DIFFERENT
• Verified output: auto-verify and refine until the residual error is
  under 0.1 LU. No guessing, no manual re-check.
• Transparent loudness range control: a continuous 3-band reshape
  (Linkwitz-Riley) works toward the programme level — it tightens loud
  passages and lifts quiet ones with no threshold and no pumping.
• True-peak safe: 4× oversampled inter-sample peak limiter with 5 ms
  look-ahead keeps you under the ceiling on every platform.

14 DELIVERY PRESETS
EBU R128, EBU R128 S1, ATSC A/85, ARIB TR-B32, AGCOM 219/09,
FreeTV OP-59, DPP UK, Portaria 354, OTT -27 LUFS, Apple Podcasts,
Spotify, Amazon Music, YouTube, and a fully editable Custom
preset.

MULTICHANNEL
From mono and stereo through 5.1 and 7.1 up to 9.1.6 Atmos bed
layouts — BS.1770-correct per layout, with LFE exclude and proper
surround weighting.

FORMATS
Input: WAV, AIFF, FLAC, OGG, MP3, M4A
Output: WAV, AIFF, FLAC

• K-weighted ITU-R BS.1770-4 measurement (integrated, range, true peak)
• Dark, focused UI — German and English
• No account, no login, no network calls — your files never leave your device

MADE FOR
Mastering engineers, broadcast and post editors, podcast and audiobook
producers, sound designers — everyone who has to hit a delivery
loudness target quickly, cleanly and provably.


## Version history (last 5 releases)

### 1.1.1 — 2026-08-31

Now on iPhone as well. One app for iPad and iPhone, with a
reworked interface in the pegelWERK design.

MEASUREMENT

True-peak measurement now follows the coefficients in
ITU-R BS.1770-4 Annex 2 exactly. Earlier versions read low on
high-frequency material, by up to 2 dB in the worst case; on
speech and most music mixes the difference was in tenths. If you
normalised close to a true-peak ceiling with an earlier version,
it is worth re-checking those files.

The corrected file is now sample-aligned with the source and the
same length. It used to sit up to 15 ms late.

Loudness Range follows EBU Tech 3342 more closely.

EBU R128 s1 now limits Maximum Short-term Loudness to -18 LUFS
as the standard defines, instead of capping Loudness Range,
which the standard explicitly excludes.

HANDLING

Results are no longer overwritten; they are numbered. Large
files no longer freeze the interface while importing. The
finished file can be shared straight from the app.

### 1.0.5 — 2026-07-12

New, distinctive app icon.

### 1.0.4 — 2026-06-15

Minor Improvements.

### 1.0.3 — 2026-06-15

Minor improvements.

### 1.0.2 — 2026-05-31

The app now appears under the pegelWERK brand. Minor improvements.

## More apps by Sascha Hoemske

- [loudness METER broadcast LUFS](https://appshunter.io/ios/app/loudness-meter-broadcast-lufs/id6763360069)
- [easy EDITOR · Audio Editor](https://appshunter.io/ios/app/easy-editor-audio-editor/id6768668559)
- [instant PLAYER · Soundboard](https://appshunter.io/ios/app/instant-player-soundboard/id6768668895)

All apps by Sascha Hoemske: https://appshunter.io/developer/1893424804

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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 2026-09-01.*