TB Equalizer vs Comp 609
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TB Equalizer
This professional audio plug-in offers advanced equalization with a dynamic workflow and warm, non-linear filters. It processes microphone input in real-time and integrates with AUv3-compatible host apps for music production.
- Mastering grade equalizer
- Integrated spectrum and dynamics analyzer
- Up to 16 filter sections
- Dynamic or static filter modes
- AI-powered equalization suggestions
- Oversampling and anti-aliasing
- Mid/side/left/right processing
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ToneBoosters Equalizer is a top-quality, professional, dynamic equalizer AUv3 plug-in with an unrivalled workflow, warm, non-linear filters and a gorgeous, functional user interface. The ToneBoosters Equalizer app captures the microphone (or external sound card) input and processes the signals in real time. To use it as a plug-in, use an AUv3-compatible host app such as Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others. ToneBoosters Equalizer will appear in the list of Audio Unit extensions for effect plug-ins. Key features: - Mastering grade, professional equalizer - Integrated spectrum analyser and dynamics analyser - The same professional sound as the acclaimed desktop version - Up to 16 filter sections with a very wide range of filter types - Run each section in dynamic or static mode - Run each section with digital purity or with analog character and non-linearities - Oversampling and anti-aliasing modes to further improve sound quality - Use Artificial Intelligence (AI) for content-dependent equalisation suggestions - Audition mode to easily identify problematic frequency areas - Automatic level make up function for every section - Zero latency mode for live operation - Lasso function to select and move multiple filters simultaneously - Piano display to select musical note frequencies - Output VU meters showing peak and RMS levels simultaneously - Undo/redo, and A/B comparison - Color themes for the user interface - Adjustable colours for every filter section - Mid, side, left, right processing for stereo input for each section - Max screen support in Garageband - Optimised for iPad and compatible with iPhone and iPod Touch - Efficient, low CPU usage What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.
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 price: Comp 609 at Free against TB Equalizer's $9.99. Comp 609 also leads on rating (4.8 vs 4.6) and iOS requirement (10.0 vs 13.0). TB Equalizer's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 7 months). On review sentiment, 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
Comp 609 is free to download; TB Equalizer costs $9.99 up front. Comp 609 sells 1 one-off in-app purchase. TB Equalizer 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 — 66 and 25 respectively. Written reviews point the same way: 85% of TB Equalizer's written reviews are positive against 88% of Comp 609's.
TB Equalizer ships an update monthly, Comp 609 every 7 months. Both last shipped on September 30, 2026.
| Parameter | TB Equalizer | Comp 609 |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.6 (66 ratings) | 4.8 (25 ratings) — better |
| Positive reviews | 85.2% of reviews | 87.5% of reviews — better |
| Number of ratings | 66 — better | 25 |
| Update frequency | Monthly — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | ToneBoosters | RRS, OOO |
Customer experience
TB Equalizer
Comp 609
Bugs and requests
TB Equalizer
Reported bugs
12 issues- Popup window for node selections cannot be disabled
- Plug-in not being read correctly
- Destroys mixed tracks
- App crashes LumaFusion as a plug-in
- Makes audio sound flat
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- Doesn't adjust any frequency
- Compatibility problem with Air Pod Pro
- Dynamic mode only works for taming frequency bands (compression), not boosting (expansion)
- LFO maximum frequency could be improved
- Instruments lose crystalline sound under 17Khz
- Only one channel side chain
- Need more bands for side chain
Requested features
14 requests- Disable popup window for node selections
- Larger UI for iPhones
- Fix plug-in reading issues
- Mouse compatibility
- Improve LFO maximum frequency
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- Add negative dynamic ratios
- Implement multi-band compressor
- Add a channel for ~5 bands side chain
- More documentation available
- Add brickwalls
- Fading spectrum on reverb app
- More Tonebooster AUs on iOS
- Dark mode option
- Advanced analytics dashboard
Comp 609
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TB Equalizer
No in-app purchases
Comp 609
- RRS Comp 609 Unlimited$4.99









