AudioEffX vs Filterstation2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AudioEffX
This app offers seven studio-quality audio effect modules for live use and enhancing music libraries. Effects can be chained in any order to create rich, modulated, or distorted sounds. It simulates room acoustics with adjustable reverb parameters for a customized listening experience.
- Seven studio-quality effect modules
- Live usage and music library enrichment
- Chained effect modules in any order
- Chorus, Delay, Drive, ParaEQ, Flanger, Phaser, Reverb effects
- Adjustable reverb parameters (tail, time, room size, diffusion, absorption, stereo)
- Sync mode for delay effects
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Multieffect Audioprocessor Seven studio quality effect modules for live usage and to enrich your iTunes music library. All effect modules can be used together chained in any order you like. The Chorus effect is a modulation effect used used to create a richer, thicker sound and add subtle movement. The effect roughly simulates the slight variations in pitch and timing that occur when multiple performers sing or play the same part. The Delay effect provides you with two different types of delay effects using two delay lines. With Sync mode the delay times can be set by note lengths and are then relative to the currently set tempo. The delayed signal can be feed back to the input for echo effects. You can select between a stereo delay and a ping-pong delay where the echoes bounces across the stereo field. The Drive effect provides you with different types of distortion from hard clipping to soft distortion simulating analog tube amplifiers and tape machines. The sound balance can be adjusted using a combined High/Lowpass filter. The distortion algorithm uses oversampling to reduce aliasing artefacts. The ParaEQ effect is a parametric equalizer with optional graphic editing of Lowpass/Highpass and Bandpass equalizer stage. The Flanger is composed of two independent delay lines with feedback for the left and the right channel respectively. The delay time of both delays is modulated by one LFO with adjustable frequency. For typical flanging effects the delay time should be below 5 milliseconds. The Phaser is built from an 8-pole allpass filter, which gives you a very short and frequency dependent delay time. This delay time is modulated by an LFO. The Reverb effect is used to simulate the sound reflections off walls in different kind of rooms. This reflections disperse the sound, enriching it by overlapping the sound with its reflection. This reverb parameter are accessible by the user: • Tail delay - Sets the amount of time that elapses between the direct sound and the reverberation tail. This time correlates with the perceived size of the simulated room. The adjustable range is from 0 ms to 300 ms. • Reverb time - The time the reverb takes to die away by 60dB after the end of the initial sound. This parameter correlates with the perceived size of the simulated room. The adjustable range is from 50 ms to 100 seconds. • Room size - The room size parameter sets the average distance between the reflecting walls. • Diffusion - The Diffusion parameter controls the echo density of the resulting reverberant sound. A higher value corresponds to a higher echo density which is in most cases more natural sounding. • Absorption - The Absorption parameter simulates the surface and air absorption of high frequencies. Due to absorption the reverberation time is shorter for high frequencies than for low frequencies. With higher absorption high frequencies will decay much faster. • Tail stereo - Adjusts the stereo image width of the reverberation tail. • Tail cutoff / tone - Lowpass and Highpass filter for the reverb tail. Summary of features: • Seven studio quality audio effects • AudioUnit for AUv3 compatible hosts. • AudioUnit full parameter automation. • Inter-app audio compatible effect. • Audiobus 3 compatible with state saving. • Apply multi effect to any song in your iTunes library. • Low latency live usage with mic and headphones. • Audio recorder • Ableton Link compatible.
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.
- 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
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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
Verdict
The clearest difference is update cadence: AudioEffX at every 5 days against Filterstation2's every 19 months. AudioEffX also leads on rating (4.9 vs 4.5) and iOS requirement (8.0 vs 12.0). On price, review sentiment, ratings volume and ads 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
AudioEffX costs $4.99 and Filterstation2 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AudioEffX holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 8 and 19 respectively. Written reviews point the same way: 77% of AudioEffX's written reviews are positive against 75% of Filterstation2's.
AudioEffX ships an update every 5 days, Filterstation2 every 19 months. The most recent releases landed on September 30, 2026 and September 25, 2026 respectively.
| Parameter | AudioEffX | Filterstation2 |
|---|---|---|
| Price | $4.99 | $4.99 |
| Rating | 4.9 (8 ratings) — better | 4.5 (19 ratings) |
| Positive reviews | 76.9% of reviews — better | 75.0% of reviews |
| Number of ratings | 8 | 19 — better |
| Update frequency | Every 5 days — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 11 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Audio Damage, Inc. |
Customer experience
AudioEffX
Filterstation2
In-app purchases
AudioEffX
No in-app purchases
Filterstation2
No in-app purchases









