Comparison

AU3FX vs mLFO

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

Head to head
About

AU3FX

This audio effect plugin offers a versatile stereo dynamics processor with a noise gate, compressor/expander, and limiter. Achieve subtle compression, extreme pumping, or maximum loudness with its highly tweakable controls and high-quality DSP.

Highlights
  • Noise gate
  • Compressor/expander with side-chain
  • Limiter/clipper
  • Negative ratio support
  • External side-chain input
  • Parallel compression
  • Adjustable envelope followers
Features
Read full description

A highly tweakable stereo dynamics processor with noise gate, compressor/expander with external side-chain input, and limiter/clipper. From subtle compression, extreme pumping, to maximum loudness! This app is part of the AU3FX series, a collection of simple and powerful audio unit effect plugins. • High quality 32-bit DSP engine. • Compressor/expander with optional lookahead buffer. • Allows negative ratios for pumping/cancellation effects. • Hard or soft knee with adjustable radius. • Built-in side-chain low/high cut filters with monitor toggle. • External side-chain input. • Built-in noise gate. • Brick-wall lookahead limiter. • Hard/soft clipper. • Supports "parallell compression". • RMS/Peak envelope followers with attack, release and hold time. • Switchable between Linear and Logarithmic mode. • Automatic makeup gain. • Stereo link on/off. • Comes with several bundled presets. • Use multiple instances at the same time. • Save/load session state in host. • External access and control of all parameters from host. • User presets shared across hosts (on iOS 13 and later).

About

mLFO

This app provides 16 programmable MIDI LFOs with extensive features for music production. It offers multiple parameters per LFO, independent output, and a wide rate range. It can be used as a standalone app or as an AUv3 plugin within compatible host applications.

Highlights
  • 16 programmable MIDI LFOs
  • Multiple parameters per LFO
  • Independent output and MIDI channel
  • Wide rate range
  • Custom shape creation (free and ADSR)
  • 4 trigger modes including random retrigger
Features
Read full description

*** Note *** Although mLFO can run as a stand-alone app, the recommended way to use it is as an AUv3 plugin from inside a suitable AU Host app, such as AUM, AudioBus, Cubasis etc. mLFO AUv3 is a set of 16 programmable MIDI LFOs with a extensive set of features: - Multiple parameters per LFO, including variability. - Independent output and MIDI channel per LFO. - Wide rate range, from 1/128 to 130442 beats. - 9 factory and 16 user shapes. - Custom shapes: free and ADSR. - 4 trigger modes, including random retrigger (every incoming note triggers a random LFO). - MIDI Thru. mLFO uses parts of the following copyrighted material, the use of which is hereby acknowledged. LICENCES AudioKit The MIT License (MIT) Copyright (c) 2016 Aurelius Prochazka Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Screenshots

AU3FX3 screens
mLFO4 screens

Verdict

The call

The clearest difference is update cadence: AU3FX at every 4 days against mLFO's every 2 months. AU3FX also leads on rating (4.7 vs 4.5) and iOS requirement (12.0 vs 15.6). mLFO's advantage is price ($5.99 vs $6.99). On review sentiment, ratings volume, 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

AU3FX costs $6.99 and mLFO $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AU3FX holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 14 and 19 respectively. Written reviews complicate that: 75% of AU3FX's written reviews are positive against 80% of mLFO's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

AU3FX ships an update every 4 days, mLFO every 2 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
AU3FX versus mLFO: the parameters behind the verdict, then further details
ParameterAU3FXmLFO
Price$6.99$5.99 — better
Rating4.7 (14 ratings) — better4.5 (19 ratings)
Positive reviews75.0% of reviews80.0% of reviews — better
Number of ratings1419 — better
Update frequencyEvery 4 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperKymatica ABAxart Labs OU

Customer experience

AU3FX

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

mLFO

All ratings19 ratings
Positive84.2%
Neutral10.5%
Negative5.3%
Written reviews10 reviews
Positive80.0%
Neutral10.0%
Negative10.0%

In-app purchases

None

AU3FX

No in-app purchases

None

mLFO

No in-app purchases

Questions

Is AU3FX free?
AU3FX costs $6.99, with no in-app purchases.
Is mLFO free?
mLFO costs $5.99, with no in-app purchases.
Which has better reviews, AU3FX or mLFO?
AU3FX is rated higher. AU3FX averages 4.7 out of 5 from 14 ratings, while mLFO averages 4.5 from 19 ratings.
Do AU3FX or mLFO have ads?
Neither AU3FX nor mLFO shows ads.
Which is updated more often, AU3FX or mLFO?
AU3FX ships an update every 4 days, and mLFO every 2 months. Most recently, AU3FX was updated on October 13, 2026 and mLFO on October 11, 2026.

Other comparisons