Comp 609 vs Zen AutoPan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Comp 609
This audio effect plugin emulates analog compressors, offering extensive control over attack, release, ratio, and saturation. It supports various operation modes, external sidechaining, and parallel compression for detailed audio shaping. A demo version is available with a time limit.
- Analog compressor emulation
- Adjustable attack, release, and ratio
- External sidechain with high-pass filter
- Multiple operation modes (M/S, Stereo, Mono)
- Parallel compression
- Oversampling and 64-bit processing
- Scalable GUI
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Comp 609 AUv3 plug-in — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the Comp 609 AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of Comp 609 AUv3 plug-in comes as In-App Purchase. FEATURES: • 6 Attack, 9 Recovery (Release) and 5 Ratio selections; • External Sidechain and Sidechain signal High-pass filter; • 6 operation modes: M/S, Mid-channel, Side-channel, Mono with Right-channel as Sidechain signal, 2-Mono, linked Stereo (or Mono); • Parallel compression; • 8x Oversampling and 64-bit floating point processing; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. COMPRESSOR SECTION: • Threshold determines how much compression will occur. When the input signal exceeds the Threshold level, the compressor engages. A smaller value results in more compression. The available range is from -20 dBu to +12 dBu; • Attack determines how fast limiting will engage when the signal exceeds the limiter Threshold. The available values is from 1 to 6; • Recovery (Release) is the time it takes for the compressor to stop processing after the signal drops below the Threshold value. The available values are 40, 80, 100, 400, 600, 800, 1000, 1500, 2000 ms; • Ratio — this control determines the compressor ratio. The available values are 1.5:1, 2:1, 3:1, 4:1 and 6:1; • Sat. On — this toggle switch enables the Analog Saturation. The saturation has no effect unless this switch is in the «On» (down) position. MASTER SECTION: • SC-Filter — the Sidechain Filter controls the cutoff frequency of a low-cut filter on the compressor control signal Sidechain. The available range is 30 Hz to 240 Hz and Off; • Input Gain controls the signal input level to the plug-in; • The Makeup control increases the signal level out of the compressor to compensate for reduced levels as a result of compression. The available range is -20 dB to +20 dB. The Makeup control does not affect the amount of compression; • Mix — the output balance between the signal processed by the plug-in and the original dry source signal can be adjusted with the Mix control. Mix facilitates parallel compression techniques without having to create additional routings in the DAW; • Comp. In — this toggle switch enables the compressor. The compressor has no effect unless this switch is in the «In» (down) position. • Mode — compressor can operate in six modes: M/S, Mid-channel, Side-channel, Mono with Right-channel as Sidechain signal, 2-Mono, linked Stereo (or Mono). This switch determines the active mode. To use Comp 609 as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — Comp 609 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.
Zen AutoPan
This AUv3 stereo movement tool offers dynamic panning effects for music production and sound design. Sculpt your audio with multiple LFO shapes and an intuitive XY pad for real-time creative control. Seamlessly integrate with compatible DAWs on iOS devices.
- Multiple LFO Shapes
- Intuitive XY Pad
- Adjustable Stereo Width
- AUv3 Compatibility
- Optimized for iOS
- 3D Visuals
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FX Forms #002 - Zen AutoPan from Wild Surmise Music, second offering in the series of AUv3 FX plugins. Note: This needs a compatible DAW App such as Logic Pro, AUM, Cubasis, Garageband etc to use the AUv3 plugin. Zen AutoPan is not merely a tool, but an invitation to dance with the rhythm of the universe. Designed with the meticulous care of a Zen garden, this AUv3 app is a portal to experiencing the dynamic interplay of sound and silence. As Alan Watts might say, it allows you to "play" with your music, weaving the fabric of stereo panning effects into the tapestry of auditory experience. In the act of creating or enhancing sound, Zen AutoPan becomes a partner in the dance of existence, moving with the effortless grace of a leaf on a breeze. It's here, in the realm of music production and sound design, that Zen AutoPan offers a reflection of the universe's own symphony, inviting you to partake in the cosmic play of sound and silence, movement and stillness. Features: - Multiple LFO Shapes: Choose from sine, square, sawtooth, and random LFO shapes to sculpt your sound. - Intuitive XY Pad: Control the depth and speed of your stereo panning effects with an easy-to-use XY pad, allowing for real-time adjustments and creative expression. - Width Control: Adjust the stereo width to go from subtle spatial enhancements to full stereo sweeps, giving your tracks a larger-than-life presence. - Versatile Use: Ideal for music production, live performances, and sound design projects. - AUv3 Compatibility: Seamlessly integrates with your favorite DAW or music production app, offering flexibility and ease of use. - Optimized for iOS: Crafted specifically for the iOS environment, Zen AutoPan ensures a stable, high-performance experience on your favorite devices. 3D Visuals leverage SceneKit and Metal Shaders providing good visual performance on iOS devices and can also be turned off in the info menu.
Screenshots
Verdict
The clearest difference is in-app purchases: Zen AutoPan at none against Comp 609's 1. Comp 609's advantage is iOS requirement (10.0 vs 15.0). On price, rating, review sentiment and ratings volume 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
Both are free to download. Comp 609 sells 1 one-off in-app purchase. Zen AutoPan asks for nothing beyond the download.
Comp 609 holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 25 and 14 respectively. Written reviews point the same way: 88% of Comp 609's written reviews are positive against 80% of Zen AutoPan's.
Comp 609 ships an update every 7 months, Zen AutoPan every 13 months. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.
| Parameter | Comp 609 | Zen AutoPan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (25 ratings) — better | 4.6 (14 ratings) |
| Positive reviews | 87.5% of reviews — better | 80.0% of reviews |
| Number of ratings | 25 — better | 14 |
| Update frequency | Every 7 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | RRS, OOO | Tom Power |
Customer experience
Comp 609
Zen AutoPan
In-app purchases
Comp 609
- RRS Comp 609 Unlimited$4.99
Zen AutoPan
No in-app purchases









