GliderVerb vs EQ550
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GliderVerb
This app offers a unique reverberation effect that simulates a room changing shape, creating evolving soundscapes. It provides a wide range of sonic possibilities, from smooth resonances to granular disintegration, with extensive control over its parameters.
- Continually modulated reverb algorithm
- Pitch resonator
- Ribbon resonance player
- Built-in stereo sampler
- Control manager LFO
- Audiobus and Inter-App Audio support
- Preset morphing pad
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GliderVerb is a “Reverberator with Glissandos” simulating a room gradually changing its shape. It is an expanded version of an algorithm created by James McCartney for his Supercollider 2 programming language. The original algorithm had no user-variable parameters: this device adds a series of parameters to create a wide palette of effects; from evolving reverberations to granular disintegration to smooth resonances. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - Continually Modulated Reverb Algorithm - Pitch Resonator - Ribbon Resonance Player - Pad impulse generator - Built In Stereo Sampler with varispeed - Control Manager LFO for 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 New Version! We removed the "annoying voice" and now you can use all the Gliderverb features, even the Pad and the Ribbon. The only limitation is you can't save new presets; but you still can load the old ones you made, using the two arrows you find on the left and right side of the preset name (top side of the main window). With the in-App purchase you can access the Preset Manager, Control Manager and MIDI enable the Pad.
EQ550
This audio effect plugin emulates classic American EQs from the late 1960s, offering precise control over equalization with unique Proportional Q technology. It functions as a standalone app or an AUv3 plugin for compatible hosts, providing a flexible and characterful sound shaping experience.
- Standalone and AUv3 plugin
- 3 bands of classic American equalization
- Proportional Q filter bandwidth
- Stereo, Mid, or Side EQ modes
- Undo/Redo and A/B comparison
- Scalable GUI
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EQ550 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 EQ550 AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ550 AUv3 plug-in comes as In-App Purchase. The EQ550 faithfully captures the punch, low-frequency transparency, and ultra-tight imaging of iconic American EQs of the late 1960’s. Making use of Proportional Q intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings without the need for additional bandwidth controls. This unique feature minimizes the «phase-shift» sound found in many equalizers. Features: • Standalone and AUv3 plug-in; • 3 bands of classic American equalization; • Each band offers 7 selected frequency centers; • Maximum 15dB of boost/cut per band; • EQ Band 1 and 3 offer shelf/peak switching; • Proportional Q narrows filter Q at extremes; • Stereo (Mono), Mid or Side EQ modes; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. The EQ550 provides reciprocal equalization at 21 points in 5 steps of boost to a maximum of 15dB of gain at each point. The twenty one equalization points are divided into three overlapping ranges. The high and low frequency ranges are individually selectable as either peaking or shelving, and a band-pass filter may be inserted independently of all other selected equalization settings. Frequency ranges and boost/cut are selected by switches, and a pushbutton «IN» switch allows the EQ to be silently introduced to the signal path. A small toggle switch is used to insert the band-pass filter into the EQ550. The EQ550 extends the features of the original hardware and joins the flexibility of the digital world to the character of the analog processing. Allows you to choose between equalizer modes (Stereo, Mid, Side) and remove analogue saturation from the processing circuit to deliver pure digital sound. To use EQ550 as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — EQ550 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.
Screenshots
Verdict
GliderVerb and EQ550 both sit at 4.6 stars, but that hides the real split: 80% of GliderVerb's written reviews are positive against 33% of EQ550's. GliderVerb also leads on ratings volume (86 vs 11). EQ550's advantage is update cadence (monthly vs every 4 months) and iOS requirement (10.0 vs 17.0). On price, rating, ads and in-app purchases 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. GliderVerb sells 1 one-off in-app purchase and EQ550 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for GliderVerb against 4.5 for EQ550. That said, the two scores are not equally well evidenced: GliderVerb has 86 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 80% of GliderVerb's written reviews are positive against 33% of EQ550's.
GliderVerb ships an update every 4 months, EQ550 monthly. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.
| Parameter | GliderVerb | EQ550 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (86 ratings) — better | 4.5 (11 ratings) |
| Positive reviews | 80.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 86 — better | 11 |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Amazing Noises | RRS, OOO |
Customer experience
GliderVerb
EQ550
Bugs and requests
GliderVerb
Reported bugs
8 issues- Audiobus problems restoring paid app
- In-app purchase restore screen is blank or stalls
- App crashes when importing samples via AudioShare
- Cannot get back to main screen from adjustment screen
- Menus lack exit/done/close buttons, leading to being stuck
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- App crashes when trying to upgrade to full version
- IAA bugs after recent update, worse than before
- App crashes when recording long files for iMovie
Requested features
8 requests- Implement shared user presets
- Default LFO Hz frequency to nothing or allow saving LFO presets
- Create a visual UI or partner with UI designers
- Add preset forward/back buttons or reduce menu diving
- Allow apps to recognize and share samples/documents directly
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- Fix IAA bugs and improve compatibility
- Add complete bundle deals
- Consider adding more functionality to AUv3 version
EQ550
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GliderVerb
- Full Version$4.99
EQ550
- RRS EQ550 Unlimited$4.99








