RealPhase vs GS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RealPhase
This app faithfully reproduces the sound of a legendary analog phaser pedal. It offers advanced modulation options, including barberpole effects and MIDI sync, for creating complex and rhythmic phasing sounds. Visualize real-time frequency response and enjoy exceptional multirate performance.
- Faithful reproduction of legendary phaser pedal
- Composite LFOs and parallel phaser structures
- Barberpole/Shepard phasing
- Rhythmic pattern creation with LFO ratios
- Mid-Side modes for stereo phasing
- Real-time notch filter frequency visualization
- MIDI note event reception for sync
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Do you remember the single most iconic phaser you've ever heard? For the first time, there's a good chance of finding that exact sound captured in a plugin. FEATURES: • Faithful reproduction of a legendary 4-stage phaser pedal from the late 70's - early 80's • Complex effects can be built using composite LFO's, parallel phaser structures, as well as an independent modulation system for the sweep range • Barberpole or "Shepard" phaser included: infinitely rising / falling modulation that can optionally be combined with sweep range modulation • Strong, rhythmic / syncopated patterns can be created by configuring different LFO frequency ratios within the various modulation sources • Mid-Side modes allow adding special phasing effects to stereo sounds • Exact visualization of the notch filters' real-time frequency response, with different stereo options • Exceptional multirate performance: results are less sampling rate-dependent than what's currently available with most digital phasers (even from major manufacturers) • Designed to be an anthology app extensible with additional hardware-based or synthetic analog models in future MIDI NOTE EVENT RECEPTION: RealPhase can accept MIDI note messages, syncing an envelope-based modulation source to note on and off events. This makes it easy to use RealPhase as a powerful analog modeling OTA-based resonant notch filter with any synth or sampler. PLEASE NOTE: • An Audio Unit v3 compatible host app is required to use this plugin • Supported sampling rates: 44.1, 48, 96 kHz
GS
This audio plugin emulates the classic Space Echo tape delay effect for iOS devices. It aims to replicate the authentic sound and quirks of the original hardware, offering a vintage delay experience.
- AUv3 plugin for iOS
- Emulates Space Echo tape delay
- Authentic vintage sound
- Basic controls mirroring original hardware
- iPad platform compatibility
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Please note: this is an AUv3 plugin that can be used with compatible host Apps. GS-201 Mark II is the evolution of a project that began in 2007 with the release of the old version of GS-201, which evolved into a mark II version in 2019 and has now landed on the iPad platform. The aim is to capture the magic of the famous Space Echo tape delay and make it available to everyone. It's not an easy task, but the experience gained over the past 15 years in audio DSP development has helped us achieve a result that can sometimes fool even ourselves. This iOS version of the GS-201 Mark II contains only the basic controls found on the original Space Echo, with no additional editing parameters. If you want to eliminate tape hiss, if the tape splice glitch is bothering you, if you don't like wow and flutter, or need host tempo sync, you are definitely looking for a different plug-in. If, on the other hand, you want to relive the experience of dealing with an original Space Echo, with all its pros and cons, you are in the right place.
Screenshots
Verdict
The clearest difference is rating: RealPhase at 5.0 against GS's 4.5. GS's advantage is price ($11.99 vs $14.99). On review sentiment, ratings volume, update cadence 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
RealPhase costs $14.99 and GS $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RealPhase holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
RealPhase ships an update every 14 months, GS every 17 months. Both last shipped on October 24, 2026.
| Parameter | RealPhase | GS |
|---|---|---|
| Price | $14.99 | $11.99 — better |
| Rating | 5.0 (5 ratings) — better | 4.5 (11 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 | 11 — better |
| Update frequency | Every 14 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | quantovox | Genuine Soundware |
Customer experience
RealPhase
GS
In-app purchases
RealPhase
No in-app purchases
GS
No in-app purchases







