Comparison

Korvpressor vs Filterstation2

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

Head to head
About

Korvpressor

This app offers an adaptive compressor and limiter with a transparent, musical sound. It features a unique interface, a built-in 3-band EQ, and a maximizer with an optional brick wall limiter. It's suitable for various audio sources, from vocals to full mixes.

Highlights
  • Adaptive compression algorithm
  • Transparent and musical sound
  • Built-in 3-band EQ
  • Dry/wet mix control
  • Intuitive user interface
  • Optional brick wall limiter
Read full description

Korvpressor is an adaptive compressor/limiter with an easy-to-use interface (a whole new take on how to tame a compressor). The compression algorithm is developed with transparency in mind, and this effect processor will sound great on almost all kinds of sounds; all from a vocal track to a full blown mix. In addition to the compression unit there are three knobs for controlling low, mid and high frequency levels. Noteworthy features: • Complex compression algorithm acclaimed for its transparency and musical sound. • Built-in 3 band EQ • Dry / wet mix • Intuitive and unique user interface • Enable/Disable lookahead time • Plenty of factory presets • Three state attack, ratio, release parameters. • Maximizer on / off switch • Built-in (optional) brick wall limiter (at 0dB) Check out the product webpage for a video demo and more info. Korvpressor works both as a standalone app and as an AUv3 plugin. Feedback or suggestions? Drop us a mail: support(at)klevgrand.se or @klevgrand on Twitter

About

Filterstation2

This app offers a versatile dual filter effect for music production, inspired by classic hardware. It features twelve filter algorithms, an envelope follower, and multiple operating modes for creative sound shaping. Its user-friendly interface and resizable GUI make it a powerful tool for producers.

Highlights
  • Twelve filter algorithms
  • Envelope follower with sidechain
  • VCA mode for tremolo/gate
  • LFO with tempo sync
  • Serial, parallel, and stereo modes
  • Resizable GUI
  • Cross-platform preset manager
Features
Read full description

Filterstation 2 is the Audio Damage dual filter, built for sound design and performance rather than corrective EQ. It runs two resonant filters in series, in parallel, or split across the stereo field, with twelve filter algorithms and a full set of modulation tools for movement, distortion, and rhythm. FEATURES Twelve filter algorithms, including our 914 bandpass and Filterpod lowpass models, a clean state-variable filter, and an MS20-style filter, covering lowpass, highpass, bandpass, and notch. Each of the two filter slots can run a different one. Serial, parallel, and true stereo routing. Run the filters one into the next, side by side, or split hard left and right. Envelope follower with stereo sidechain. Drive the cutoff from a signal's own dynamics for auto-wah, or feed in an external source so one track opens the filter on another. LFO with twelve patterns, internal or tempo-synced. VCA mode for tremolo and gating. FSU section for extra signal hacking, for when clean is not the point. Resizable vector interface, sharp on every iPhone and iPad display. Universal preset system. XML-based presets move between iOS and the desktop versions. IN USE... Sweep the cutoff by hand for filter rises and drops. Set the envelope follower to track the input for an auto-wah that moves with your playing. Patch a kick into the sidechain to duck a pad or bassline in time. Run the two filters in series for steep formant shapes, or in parallel for wide dual-band sweeps. Tempo-sync the LFO for rhythmic gating, then bring in the FSU section when the part needs to fall apart. Filterstation 2 runs as an AUv3 plugin inside any compatible iOS host, including AUM, Cubasis, Drambo, apeMatrix, and GarageBand. It is also available for macOS, Windows, and Linux as a desktop plugin, and presets move freely between them. Requires iOS 13 or later. An AUv3 host app is recommended. Features • Twelve different filter algorithms, including MS20 emulation and our classic 914 bandpass and Filterpod lowpass models. • VCA mode for tremolo and gate effects. • LFO with twelve different patterns, and both internal and tempo sync modes. • Envelope follower for dynamic control of filter frequency. • Serial, parallel, and true stereo operating modes. • Easy-to use interface for quick programming. • Vector-based resizable GUI. Use just the filter screen, slide the controls over it, or (in hosts that allow it) open up the whole UI. • Cross-platform XML-based preset manager; copy your desktop presets to the iOS version using Handoff, or share them with your friends and in forums. • Full PDF manual available at Support link.

Screenshots

Filterstation22 screens

Verdict

The call

The clearest difference is price: Filterstation2 at $4.99 against Korvpressor's $14.99. Filterstation2 also leads on device support (3 vs 1). Korvpressor's advantage is review sentiment (90% vs 75%) and update cadence (every 9 months vs every 19 months). On rating, 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

Korvpressor costs $14.99 and Filterstation2 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Korvpressor against 4.5 for Filterstation2. Both are backed by a comparable volume of ratings — 15 and 19 respectively. Written reviews are what separate them: 90% of Korvpressor's written reviews are positive against 75% of Filterstation2's.

UpkeepUpdate frequency

Korvpressor ships an update every 9 months, Filterstation2 every 19 months. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
Korvpressor versus Filterstation2: the parameters behind the verdict, then further details
ParameterKorvpressorFilterstation2
Price$14.99$4.99 — better
Rating4.5 (15 ratings)4.5 (19 ratings)
Positive reviews90.5% of reviews — better75.0% of reviews
Number of ratings1519 — better
Update frequencyEvery 9 months — betterEvery 19 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size17 MB29 MB
Age rating4+4+
DeveloperKlevgrand Produkter ABAudio Damage, Inc.

Customer experience

Korvpressor

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews21 reviews
Positive90.5%
Neutral0.0%
Negative9.5%

Filterstation2

All ratings19 ratings
Positive84.2%
Neutral5.3%
Negative10.5%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

In-app purchases

None

Korvpressor

No in-app purchases

None

Filterstation2

No in-app purchases

Questions

Is Korvpressor free?
Korvpressor costs $14.99, with no in-app purchases.
Is Filterstation2 free?
Filterstation2 costs $4.99, with no in-app purchases.
Which has better reviews, Korvpressor or Filterstation2?
Korvpressor and Filterstation2 are both rated 4.5 out of 5 on the App Store, from 15 and 19 ratings respectively.
Do Korvpressor or Filterstation2 have ads?
Neither Korvpressor nor Filterstation2 shows ads.
Which is updated more often, Korvpressor or Filterstation2?
Korvpressor ships an update every 9 months, and Filterstation2 every 19 months. Most recently, Korvpressor was updated on October 2, 2026 and Filterstation2 on October 11, 2026.

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