Comparison

Spiral Chorus vs SUBscription Synth

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

Head to head
About

Spiral Chorus

This music effect plugin offers an analog-modeled LCR chorus with touch-friendly controls and immersive 3D visuals. It seamlessly integrates into DAWs for iOS, adding depth and texture to various music productions.

Highlights
  • Analog Modeled LCR Chorus
  • Touch-Friendly Controls
  • Immersive 3D Visuals
  • Versatile Music Application
  • Optimized for iOS
  • Seamless DAW Integration
Features
Read full description

FX Forms #001 - Spiral Chorus from Wild Surmise Music, number one in the series of AUv3 FX plugins. Key Features: - Analog Modeled LCR Chorus: Delve into the rich, warm textures of an analog-modeled LCR (Left-Center-Right) chorus effect, bringing a new dimension to your tracks. - Touch-Friendly Controls: With an interface tailored for iOS, Spiral Chorus offers intuitive, touch-friendly controls. Effortlessly sculpt your sound with responsive sliders and xy pads, ensuring a seamless workflow. - Immersive 3D Visuals: Enhance your audio manipulation experience with captivating 3D visuals in the background. - Versatile Application: Whether you're working on dreamy soundscapes, dynamic beats, or cutting-edge experimental sounds, Spiral Chorus adds a layer of depth and texture to your music. - Optimized for iOS: Crafted specifically for the iOS environment, Spiral Chorus ensures a stable, high-performance experience on your favorite devices. 3D Visuals leverage SceneKit and Metal Shaders providing good visual performance on iOS devices. - Seamless Integration: Use Spiral Chorus seamlessly within your favorite DAW as an AUv3 plugin, fitting perfectly into your existing workflow.

About

SUBscription Synth

This app transforms user-entered text into unique monophonic sub-synth waveshapes. It offers a text-to-synthesis engine, drive and dirt effects, a low-pass filter, and extensive modulation options for creating powerful bass sounds.

Highlights
  • Text-to-synthesis engine
  • Monophonic sub-synth
  • Drive and dirt effects
  • 12dB/oct low-pass filter
  • 2 envelopes, 2 LFOs, 4 expression controls
  • AUv3 plugin and standalone operation
Read full description

To celebrate international joke day 2023, we decided to take a big step with our first synthesizer plugin; SUBscription. While based on a tongue-in-cheek pun about the current state and direction of the music tech industry, we actually ended up with a surprisingly excellent plugin that takes user-generated phrases (subscription codes) and converts them into unique waveshapes in a monophonic sub-synth. - Create powerful, characterful bass sounds - Unique and exceptionally high IQ text synthesis technique ^TM - Reasonable subscription models - Unequivocally superior, requires no review. SUBscription Upon entering a subscription code into our brand new text-to-synthesis engine, you are entering a world of sonic enrichment and fame, but you may have to make a deal with the devil. Text Synthesis Create characterful wave shapes using our experimental new text-to-synthesis technique. We have prepared every possible character combination (subscription code) because you’re weak and predictable. Drive & Dirt Boost the ever loving **** out of the synth with some crispy drive. Use the Dirt knob’s Rate modulation to thicken and filth up your tracks with noisy textures. Filter Carve your frequencies out with the 12dB/oct low-pass ladder filter. Much like the filter, we too will be filtering out any bug reports, requests or errors - our time is far more important. Modulation Add movement to your sounds with 2 envelopes, 2 LFO’s & 4 expression controls which are assignable to nearly every parameter. Unlike the fluid nature of modulation, we stand firm with our decisions - you just wouldn’t get it. Product Aftercare If you need support via email you’ll have to deal with harshly worded, incredibly frustrated developers and please note that all critical feedback of any nature will be met with serious scolding. SUBscription is designed as an AUv3 plugin, meaning it works within iOS and iPadOS hosts such as Logic Pro, GarageBand, Cubasis 3, AUM and Beatmaker 3. SUBscription also works as a standalone instrument.

Screenshots

Spiral Chorus1 screens
SUBscription Synth2 screens

Verdict

The call

The clearest difference is price: Spiral Chorus at Free against SUBscription Synth's $2.99. Spiral Chorus also leads on rating (5.0 vs 4.6). SUBscription Synth's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs every 15 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

CostPrice · In-app purchases · Ads · Monetization

Spiral Chorus is free to download; SUBscription Synth costs $2.99 up front. Spiral Chorus sells 3 one-off in-app purchases. SUBscription Synth asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spiral Chorus holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 15 and 42 respectively. Written reviews point the same way: 89% of Spiral Chorus's written reviews are positive against 88% of SUBscription Synth's.

UpkeepUpdate frequency

Spiral Chorus ships an update every 15 months, SUBscription Synth every 2 days. The most recent releases landed on September 10, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
Spiral Chorus versus SUBscription Synth: the parameters behind the verdict, then further details
ParameterSpiral ChorusSUBscription Synth
PriceFree — better$2.99
Rating5.0 (15 ratings) — better4.6 (42 ratings)
Positive reviews88.9% of reviews — better87.5% of reviews
Number of ratings1542 — better
Update frequencyEvery 15 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.011.0 — better
Further details — not scored
Size12 MB8 MB
Age rating4+4+
DeveloperTom PowerCaelum Audio

Customer experience

Spiral Chorus

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

SUBscription Synth

All ratings42 ratings
Positive90.5%
Neutral0.0%
Negative9.5%
Written reviews24 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

3 purchases

Spiral Chorus

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$9.99
None

SUBscription Synth

No in-app purchases

Questions

Is Spiral Chorus free?
Spiral Chorus is free to download, with in-app purchases available.
Is SUBscription Synth free?
SUBscription Synth costs $2.99, with no in-app purchases.
Which has better reviews, Spiral Chorus or SUBscription Synth?
Spiral Chorus is rated higher. Spiral Chorus averages 5.0 out of 5 from 15 ratings, while SUBscription Synth averages 4.6 from 42 ratings.
Do Spiral Chorus or SUBscription Synth have ads?
Neither Spiral Chorus nor SUBscription Synth shows ads.
Which is updated more often, Spiral Chorus or SUBscription Synth?
Spiral Chorus ships an update every 15 months, and SUBscription Synth every 2 days. Most recently, Spiral Chorus was updated on September 10, 2026 and SUBscription Synth on September 23, 2026.

Other comparisons