Apogee Maestro vs Comp 609
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Control MFi compliant audio interfaces
- Access all features and settings
- Hardware-based low latency mixer
- Significantly improves recording latency
- Simple tab-based interface
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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.
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.
Screenshots
Verdict
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
Both are free to download. Comp 609 sells 1 one-off in-app purchase. Apogee Maestro asks for nothing beyond the download.
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.
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.
| Parameter | Apogee Maestro | Comp 609 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (46 ratings) | 4.8 (25 ratings) — better |
| Positive reviews | 23.6% of reviews | 87.5% of reviews — better |
| Number of ratings | 46 — better | 25 |
| Update frequency | Every 4 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 7 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Apogee Electronics Corp | RRS, OOO |
Customer experience
Apogee Maestro
Comp 609
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
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- 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
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- Fix phantom power button functionality
- Improve compatibility with newer iPhones
Comp 609
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Apogee Maestro
No in-app purchases
Comp 609
- RRS Comp 609 Unlimited$4.99







