Comparison

TriKey vs GS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TriKey

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TriKey is a composer's keyboard Control other iPad synths or external MIDI hardware! Features: - 3 configurable Keyboards with the ability to control CC Messages by moving your fingers up / down - Global Key and Scales prevent you from ever playing a wrong note - Save and toggle Chords - Advanced CC Options for each keyboard - Save / Load your own presets - Individual MIDI Ports & Channels for each Keyboard

About

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.

Highlights
  • AUv3 plugin for iOS
  • Emulates Space Echo tape delay
  • Authentic vintage sound
  • Basic controls mirroring original hardware
  • iPad platform compatibility
Read full description

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

GS1 screens

Verdict

The call

The clearest difference is update cadence: TriKey at every 2 months against GS's every 17 months. TriKey also leads on price ($9.99 vs $11.99). GS's advantage is device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

TriKey costs $9.99 and GS $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TriKey ships an update every 2 months, GS every 17 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
TriKey versus GS: the parameters behind the verdict, then further details
ParameterTriKeyGS
Price$9.99 — better$11.99
Rating—4.5 (11 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—11 — better
Update frequencyEvery 2 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.011.0 — better
Further details — not scored
Size5 MB10 MB
Age rating4+4+
DeveloperMarcos KohlerGenuine Soundware

In-app purchases

None

TriKey

No in-app purchases

None

GS

No in-app purchases

Questions

Is TriKey free?
TriKey costs $9.99, with no in-app purchases.
Is GS free?
GS costs $11.99, with no in-app purchases.
Do TriKey or GS have ads?
Neither TriKey nor GS shows ads.
Which is updated more often, TriKey or GS?
TriKey ships an update every 2 months, and GS every 17 months. Most recently, TriKey was updated on October 26, 2026 and GS on October 24, 2026.

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