Comparison

iDousyn vs Spiral Chorus

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

Head to head
About

iDousyn

This app transforms your device into a professional music production tool. It features a sample-based synthesizer with dual-layer sampling, advanced filters, and a professional effects chain. Create immersive sounds and build captivating tracks with an intuitive interface and extensive sound library.

Highlights
  • Dual-layer sampling
  • Advanced filters and EQ
  • Professional effects chain
  • Creative chord pads
  • MIDI mastery
  • Expansive sound library
Features
Read full description

iDousyn transforms your iPhone and iPad into a premium sampler, synthesizer, and AUv3 plugin built for professional music production, beat making, and sound design. Powered by a massive dual-layer rompler engine, it delivers a touch-optimized workflow to create studio-quality music anywhere. Seamlessly integrating as a high-performance AUv3 Audio Unit, iDousyn is the perfect companion for Logic Pro for iPad, GarageBand, Cubasis, AUM, Loopy Pro, and other leading iOS DAWs. Whether you are producing EDM, making hip hop beats, scoring cinematic soundtracks, or designing ambient soundscapes, iDousyn gives you the ultimate sonic palette. Chord Sequencer & Harmony Engine • Ultimate Inspiration: Instantly browse, audition, and map over 432 chord variations and 100 global musical scales directly to your pads—no advanced music theory required. • Timeline Sequencer: Drag and drop your custom chords into the new visual timeline. Program rests, set loop lengths, and let the zero-latency lookahead scheduler play your progressions with perfect tempo synchronization. • Dynamic Performance: 10 customizable Chord Pads featuring intelligent strumming, dual MIDI keyboards, and assignable key ranges with real-time Neon Glow visual feedback. Dual-Layer Synthesis & DSP Effects • True Dual-Layer Rompler: Stack and blend two independent sample oscillators. Fine-tune with octave, semitone, cents, pan, and level controls for massive, evolving textures. • Studio-Grade FX Chain: Shape your tone with multi-mode filters, a parametric EQ, and fully automatable AUv3 effects including Reverb, Delay, Chorus, Flanger, Phaser, Compressor, and Limiter. Massive Sound Library & iCloud Sync • 1,100+ Premium Samples: An expansive built-in soundbank featuring heavy basses, lush synth pads, sharp leads, drum kits, acoustic guitars, and orchestral strings. • Smart Presets: Create unlimited custom patches. Your library is safely backed up with automatic, silent background iCloud Drive synchronization across all your Apple devices. Pro Recording & Export • Lossless Audio & MIDI: Record your live sessions directly within the app and export high-fidelity FLAC, WAV, AIFF, CAF, or M4A audio files, as well as full MIDI sequences. • AudioShare Integration: Instantly route your bounces to your favorite audio editors. • Background Audio: Keep your sequences running and your MIDI controllers active even while switching between apps. Designed for modern producers, beat makers, live performers, and synth enthusiasts, iDousyn brings desktop-class virtual instruments right to your fingertips.

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.

Screenshots

iDousyn4 screens
Spiral Chorus1 screens

Verdict

The call

The clearest difference is review sentiment: Spiral Chorus at 89% against iDousyn's 34%. Spiral Chorus also leads on price (Free vs $6.99) and rating (5.0 vs 4.2). iDousyn's advantage is update cadence (every 2 months vs every 15 months) and ratings volume (161 vs 15). On ads, in-app purchases 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; iDousyn costs $6.99 up front. iDousyn sells 1 one-off in-app purchase and Spiral Chorus sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Spiral Chorus holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: iDousyn has 161 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 34% of iDousyn's written reviews are positive against 89% of Spiral Chorus's.

UpkeepUpdate frequency

iDousyn ships an update every 2 months, Spiral Chorus every 15 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
iDousyn versus Spiral Chorus: the parameters behind the verdict, then further details
ParameteriDousynSpiral Chorus
Price$6.99Free — better
Rating4.2 (161 ratings)5.0 (15 ratings) — better
Positive reviews34.1% of reviews88.9% of reviews — better
Number of ratings161 — better15
Update frequencyEvery 2 months — betterEvery 15 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size1.2 GB12 MB
Age rating4+4+
DeveloperJorge LozadaTom Power

Customer experience

iDousyn

All ratings159 ratings
Positive78.6%
Neutral2.5%
Negative18.9%
Written reviews44 reviews
Positive34.1%
Neutral6.8%
Negative59.1%

Spiral Chorus

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

Bugs and requests

iDousyn

Reported bugs

15 issues
  • App crashes immediately
  • Full version displays full-page ads
  • Ads appear on the front page
  • New update has ads
  • Implemented trackers
Show 10 more
  • iDousyn Lite works, this one does not
  • App does not open
  • MIDI input timing issues
  • Sound crash sometimes
  • Long delay between external MIDI and sound
  • Sluggish keyboard
  • Sluggish interface
  • Glide is always on
  • Scrolling menu is hard to use
  • Sliders on scrolling menu

Requested features

10 requests
  • Adaptive Crasher (AUV3, Adaptive Cubasis and Zenbeats)
  • AUV3 support
  • Audiobus compatibility
  • MIDI IN for better keyboard control
  • Background audio option
Show 5 more
  • Reset button
  • Fix sound crash
  • Improve interface contrast
  • Make panel brighter
  • Allow turning off glide

Spiral Chorus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

iDousyn

One-time1
  • Unlock ProFree
3 purchases

Spiral Chorus

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$9.99

Questions

Is iDousyn free?
iDousyn costs $6.99, and also offers in-app purchases.
Is Spiral Chorus free?
Spiral Chorus is free to download, with in-app purchases available.
Which has better reviews, iDousyn or Spiral Chorus?
Spiral Chorus is rated higher. iDousyn averages 4.2 out of 5 from 161 ratings, while Spiral Chorus averages 5.0 from 15 ratings.
Do iDousyn or Spiral Chorus have ads?
Neither iDousyn nor Spiral Chorus shows ads.
Which is updated more often, iDousyn or Spiral Chorus?
iDousyn ships an update every 2 months, and Spiral Chorus every 15 months. Most recently, iDousyn was updated on October 24, 2026 and Spiral Chorus on October 13, 2026.

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