Comparison

LevLr vs loudness CORRECT · Normalizer

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

Head to head
About

LevLr

This audio effect plugin offers simple compression and limiting for music production. It features two modes and two intuitive controls, making it easy to achieve desired dynamics without complex settings. Presets are included for quick adjustments.

Highlights
  • Compressor and Limiter modes
  • Two intuitive controls (In/Out)
  • Simple presets
  • AUv3 compatible
  • Standalone operation
Read full description

LevLr Compressor / limiter Plugin (AUv3) LevLr is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand. Overview The LevLr "leveller" is a super simple dynamics processor with just two modes and two controls. If you find tinkering with compression ratios, makeup gain and attack / decay times, confusing or time-consuming, you might like to give LevLr a try, especially as it's free! Parameters Active - Toggles the effect On or Off. Mode - Changes between Comp (compressor) and Limit (limiter) mode. Typically you would use Comp on an individual track, and Limit on a master output. In - Determines how hard you drive the compression "circuit". As you increase the gain, the compression effect will become more obvious, with an overall increase in perceived volume and "weight". Out - Allows you to reduce the output in cases where you have the desired amount of compression, but the track is now too dominant in your mix. You generally don't need to adjust this unless your In setting is more than about 6dB. With so few controls, it's pretty easy to dial-in LevLr to taste, but it also has three very simple presets to get you going: Default - a general-purpose Comp setting that can help a track sit in the mix a bit better. Track Compressor - this is heavier / more obvious compression, with a little gain compensation. Master Limiter - this can work well on a master bus and makes everything seem LOUDER! That's pretty much all there is to it, but for the technically minded... The In value is basically the compression threshold, so for example 6dB means compression will kick-in somewhere around the -6dB level. The compression ratios used are 4:1 and 12:1 for Comp and Limit mode respectively. Automatic gain compensation is applied internally depending on the threshold and ratio. The attack time is extremely fast (close to 0ms) meaning that LevLr should handle just about anything you can throw at it without exceeding 0dB at its output. Please do take a look at my other AudioUnits on the App Store if you can spare the time. Supporting paid apps allows me to release free ones as a little thankyou from time to time. For more info and support please visit: www.waverley-instruments.com/robjackson

About

loudness CORRECT · Normalizer

Features
Read full description

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.

Screenshots

LevLr2 screens
loudness CORRECT · Normalizer4 screens

Verdict

The call

The clearest difference is price: LevLr at Free against loudness CORRECT · Normalizer's $17.99. LevLr also leads on update cadence (daily vs every 2 weeks) and device support (4 vs 2). On ads and in-app purchases 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

LevLr is free to download; loudness CORRECT · Normalizer costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

LevLr ships an update daily, loudness CORRECT · Normalizer every 2 weeks. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 5 level
LevLr versus loudness CORRECT · Normalizer: the parameters behind the verdict, then further details
ParameterLevLrloudness CORRECT · Normalizer
PriceFree — better$17.99
Rating5.0 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyDaily — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size12 MB6 MB
Age rating4+4+
DeveloperRob JacksonSascha Hoemske

In-app purchases

None

LevLr

No in-app purchases

None

loudness CORRECT · Normalizer

No in-app purchases

Questions

Is LevLr free?
LevLr is free to download, with no in-app purchases.
Is loudness CORRECT · Normalizer free?
loudness CORRECT · Normalizer costs $17.99, with no in-app purchases.
Do LevLr or loudness CORRECT · Normalizer have ads?
Neither LevLr nor loudness CORRECT · Normalizer shows ads.
Which is updated more often, LevLr or loudness CORRECT · Normalizer?
LevLr ships an update daily, and loudness CORRECT · Normalizer every 2 weeks. Most recently, LevLr was updated on September 23, 2026 and loudness CORRECT · Normalizer on October 1, 2026.

Other comparisons