Comparison

DubFilter vs Comp 609

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

Head to head
About

DubFilter

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

Highlights
  • Dual low-pass/high-pass filter
  • Resonance and Overlap parameter
  • Stereo sample player with LFO
  • Scrubbing capabilities
  • Audiobus and Inter-App Audio support
  • MIDI control and file management
  • Preset morphing pad
Features
Read full description

The Dub Filter is a dual low-pass/high-pass 24/48 dB filter, with resonance and the exclusive Overlap parameter! It contains a completely redesigned stereo sample player with LFO and scrubbing capabilities. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - State Variable Filter (Low-Pass and High-Pass) with resonance and overlap - Built In Stereo Sampler with varispeed and scrubbing - Control Manager LFO for all the Parameters - Midibus, Virtual Midi and Network: 14 bit NRPN controllers - File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy - Snapshots Presets Morphing Pad - Post Fx Chain: Low-shelf Filter, High-shelf and Compressor

About

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.

Highlights
  • 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
Read full description

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.

Screenshots

DubFilter4 screens
Comp 6094 screens

Verdict

The call

DubFilter and Comp 609 both sit at 4.7 stars, but that hides the real split: 88% of Comp 609's written reviews are positive against 73% of DubFilter's. Comp 609 also leads on iOS requirement (10.0 vs 17.0). On price, rating, ratings volume and update cadence 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

Both are free to download. DubFilter sells 1 one-off in-app purchase and Comp 609 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for DubFilter against 4.8 for Comp 609. Both are backed by a comparable volume of ratings — 71 and 25 respectively. Written reviews are what separate them: 73% of DubFilter's written reviews are positive against 88% of Comp 609's.

UpkeepUpdate frequency

DubFilter ships an update every 6 months, Comp 609 every 7 months. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 8 level
DubFilter versus Comp 609: the parameters behind the verdict, then further details
ParameterDubFilterComp 609
PriceFreeFree
Rating4.7 (71 ratings)4.8 (25 ratings) — better
Positive reviews73.3% of reviews87.5% of reviews — better
Number of ratings71 — better25
Update frequencyEvery 6 months — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.010.0 — better
Further details — not scored
Size12 MB21 MB
Age rating4+4+
DeveloperAmazing NoisesRRS, OOO

Customer experience

DubFilter

All ratings71 ratings
Positive91.5%
Neutral2.8%
Negative5.6%
Written reviews30 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

Comp 609

All ratings25 ratings
Positive96.0%
Neutral0.0%
Negative4.0%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

1 purchases

DubFilter

One-time1
  • Audio Unit Plugin Support$1.99
1 purchases

Comp 609

One-time1
  • RRS Comp 609 Unlimited$4.99

Questions

Is DubFilter free?
DubFilter is free to download, with in-app purchases available.
Is Comp 609 free?
Comp 609 is free to download, with in-app purchases available.
Which has better reviews, DubFilter or Comp 609?
Comp 609 is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while Comp 609 averages 4.8 from 25 ratings.
Do DubFilter or Comp 609 have ads?
Neither DubFilter nor Comp 609 shows ads.
Which is updated more often, DubFilter or Comp 609?
DubFilter ships an update every 6 months, and Comp 609 every 7 months. Most recently, DubFilter was updated on October 3, 2026 and Comp 609 on September 30, 2026.

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