Comp 609 vs Melo Mixer
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.
Melo Mixer
Record, store, and edit your own music with this voice recording app. It offers live updates during recording, instant playback, and a visual waveform editor for precise audio adjustments. Create and manage your music library with ease.
- Personalized profiles
- Import song files
- Live recording updates
- Instant playback
- Persistent music library
- Visual waveform editing
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Melo Mixer is a dynamic voice recording app that empowers users to create their own music with ease. From signing up and creating personalized profiles to importing song files, the app offers a seamless experience for recording, storing, and editing audio. Key features include live updates during recording, instant playback, and a persistent music library where users can search, rename, and modify their recordings. The Edit Recording tab introduces a visual waveform, allowing users to fine-tune their recordings with precision, making Melo Mixer the ultimate tool for budding musicians and audio creators.
Screenshots
Verdict
The clearest difference is in-app purchases: Melo Mixer at none against Comp 609's 1. Melo Mixer also leads on update cadence (daily vs every 7 months) and review sentiment (100% vs 88%). Comp 609's advantage is ratings volume (25 vs 2) and device support (3 vs 1). On price, rating 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
Both are free to download. Comp 609 sells 1 one-off in-app purchase. Melo Mixer asks for nothing beyond the download.
Melo Mixer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Comp 609 has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 88% of Comp 609's written reviews are positive against 100% of Melo Mixer's.
Comp 609 ships an update every 7 months, Melo Mixer daily. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | Comp 609 | Melo Mixer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (25 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 25 — better | 2 |
| Update frequency | Every 7 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | RRS, OOO | Randy Messo |
Customer experience
Comp 609
Melo Mixer
In-app purchases
Comp 609
- RRS Comp 609 Unlimited$4.99
Melo Mixer
No in-app purchases









