Comparison

Apogee Maestro 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

Apogee Maestro

Control and adjust all features and settings for MFi compliant audio interfaces. This application offers a hardware-based low latency mixer to significantly reduce recording delays.

Highlights
  • Control MFi compliant audio interfaces
  • Access all features and settings
  • Hardware-based low latency mixer
  • Significantly improves recording latency
  • Simple tab-based interface
Features
Read full description

Apogee Maestro is the control application for MFi compliant Apogee audio interfaces. Maestro lets you access and adjust all features and settings from 5 simple tabs. Maestro also significantly improves latency (the delay that occurs during recording) with a hardware based low latency mixer.

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

Apogee Maestro1 screens
Comp 6094 screens

Verdict

The call

The clearest difference is review sentiment: Comp 609 at 88% against Apogee Maestro's 24%. Comp 609 also leads on rating (4.8 vs 2.1). Apogee Maestro's advantage is in-app purchases (none vs 1) and update cadence (every 4 months vs every 7 months). On price, ratings volume, ads and device support 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. Comp 609 sells 1 one-off in-app purchase. Apogee Maestro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Comp 609 holds the better App Store score, 4.8 against 2.1. Both are backed by a comparable volume of ratings — 46 and 25 respectively. Written reviews point the same way: 24% of Apogee Maestro's written reviews are positive against 88% of Comp 609's.

UpkeepUpdate frequency

Apogee Maestro ships an update every 4 months, Comp 609 every 7 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
Apogee Maestro versus Comp 609: the parameters behind the verdict, then further details
ParameterApogee MaestroComp 609
PriceFreeFree
Rating2.1 (46 ratings)4.8 (25 ratings) — better
Positive reviews23.6% of reviews87.5% of reviews — better
Number of ratings46 — better25
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better10.0
Further details — not scored
Size7 MB21 MB
Age rating4+4+
DeveloperApogee Electronics CorpRRS, OOO

Customer experience

Apogee Maestro

All ratings46 ratings
Positive23.9%
Neutral6.5%
Negative69.6%
Written reviews106 reviews
Positive23.6%
Neutral7.5%
Negative68.9%

Comp 609

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

Bugs and requests

Apogee Maestro

Reported bugs

17 issues
  • App crashes frequently
  • App does not recognize devices
  • Gain settings are not remembered
  • Phantom power control issues
  • Meters freeze or show incorrect signals
Show 12 more
  • App disconnects when minimized
  • Registration process fails
  • Software return not working for audio routing
  • App hijacks headphones
  • Interface is not recognized by the app
  • Input levels max out unexpectedly
  • Monitoring not working correctly
  • App doesn't work with iPad Pro USB-C
  • App doesn't work with iOS 15+
  • App doesn't work with iOS 9.2
  • App doesn't work with iOS 11
  • App doesn't work with iOS 26

Requested features

7 requests
  • Update app for current iOS/iPadOS versions
  • Support for USB-C connections on newer iPads
  • Improve routing capabilities for apps
  • Add retina icons
  • Make Maestro useful for Symphony I/O
Show 2 more
  • Fix phantom power button functionality
  • Improve compatibility with newer iPhones

Comp 609

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Apogee Maestro

No in-app purchases

1 purchases

Comp 609

One-time1
  • RRS Comp 609 Unlimited$4.99

Questions

Is Apogee Maestro free?
Apogee Maestro is free to download, with no in-app purchases.
Is Comp 609 free?
Comp 609 is free to download, with in-app purchases available.
Which has better reviews, Apogee Maestro or Comp 609?
Comp 609 is rated higher. Apogee Maestro averages 2.1 out of 5 from 46 ratings, while Comp 609 averages 4.8 from 25 ratings.
Do Apogee Maestro or Comp 609 have ads?
Neither Apogee Maestro nor Comp 609 shows ads.
Which is updated more often, Apogee Maestro or Comp 609?
Apogee Maestro ships an update every 4 months, and Comp 609 every 7 months. Most recently, Apogee Maestro was updated on October 14, 2026 and Comp 609 on September 30, 2026.

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