Comparison

GRFX vs Harmonic Explorer

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

Head to head
About

GRFX

Transform ordinary audio into unique sonic textures, evolving soundscapes, and rhythmic glitches. This app offers precise control over sound manipulation with a unique pitch controller, multiple LFOs, and a flexible multi-effect chain. Create complex and immersive audio transformations in real-time.

Highlights
  • Granular engine for textures and rhythms
  • Harmonic Triangle pitch controller
  • Multi-effect chain with probabilistic routing
  • Four self-modulating LFOs
  • Real-time audio sculpting
  • AUv3 plugin and standalone app
Features
Read full description

GRFX is a powerful and creative granular effects processor that turns ordinary audio into extraordinary sonic landscapes. Slice your sound into grains and reshape them into evolving textures, shimmering chords, rhythmic glitches, haunting drones, and more. At the heart of GRFX is the Harmonic Triangle – an intuitive 3-way pitch controller that lets you morph simple tones into lush pads, arpeggiated patterns, or abstract gestures. Whether you’re aiming for organic soundscapes or synchronized stutters, GRFX gives you precise control over the flow of grains and modulation. Build complexity with four self-modulating LFOs, a multi-effect chain with probabilistic routing, and an elegant drag-and-drop modulation system. Shape your sound, modulate nearly every parameter, and sculpt immersive audio transformations in real time. Key Features: - Granular engine for creating textures, rhythms, chords, glitches, drones, ambiences, and more - Harmonic Triangle for 3-way pitch control, detuning, and microtonality - Built-in Chord Selector with 32 triads for instant harmonic richness - Grain envelope shaping for plucky, smooth, or abrupt grains - Buffer size, division, sync, and freeze controls - Rhythmic synchronization for tempo-synced effects and patterns - 4 LFOs with self-modulation and drag-and-drop assignment - Modulation panel & view mode for streamlined modulation management - 2 Multi-Effect slots (Filter, Distortion, Delay, Peak EQ, Chorus, Phaser, Bitcrusher, Reverb) with probability-based routing - Dedicated Send FX with Delay and Reverb in series or parallel mode - Flexible mixer section for sculpting wet/dry balance and routing AUv3 Audio Unit plugin – requires an AUv3-compatible host app such as Logic Pro, GarageBand, AUM, or Cubasis. Standalone version included.

About

Harmonic Explorer

Features
Read full description

Harmonic Explorer is a unique musical instrument built for sonic discovery. Tap into a grid of harmonic tones, pan across four octaves, and sculpt sound with layered controls that invite both casual play and deep experimentation. From soft, violin-like purity to rich metallic textures and spatial choruses, Harmonic Explorer offers a wide expressive range. Adjust harmonic gains, spread tones into lush chords, or reduce everything down to a single precise frequency. Key Features: - Intuitive multi-touch interface with four full octaves - Portrait and Landscape mode fully supported - Harmonic tone generation with per-voice amplitude control - Dynamic chord spread control — from single tones to shimmering triads - Built-in reverb with selectable acoustic spaces (from Room to Cathedral) - Randomize and Reset for playful experimentation or clean slates - Route Picker to send audio directly to Bluetooth or external devices - Designed for real-time performance and sound exploration - Fully offline — no ads, no tracking, no accounts, no interruptions Whether you're a composer looking for new inspiration, a student learning sound design, or just curious about the nature of harmonic structure, Harmonic Explorer offers a fresh way to hear and shape music. Sculpt tones. Discover timbres. Explore harmonics.

Screenshots

GRFX4 screens
Harmonic Explorer4 screens

Verdict

The call

The clearest difference is price: Harmonic Explorer at $0.99 against GRFX's $6.99. Harmonic Explorer also leads on iOS requirement (15.6 vs 17.0). GRFX's advantage is update cadence (monthly vs every 7 months). 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

GRFX costs $6.99 and Harmonic Explorer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GRFX ships an update monthly, Harmonic Explorer every 7 months. The most recent releases landed on September 9, 2026 and September 7, 2026 respectively.

Scorecard3 real differences · 7 level
GRFX versus Harmonic Explorer: the parameters behind the verdict, then further details
ParameterGRFXHarmonic Explorer
Price$6.99$0.99 — better
Rating4.6 (11 ratings) — better—
Positive reviews77.8% of reviews—
Number of ratings11 — better—
Update frequencyMonthly — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size117 MB2 MB
Age rating4+4+
DeveloperImaginando LdaPhilippe Zay

In-app purchases

None

GRFX

No in-app purchases

None

Harmonic Explorer

No in-app purchases

Questions

Is GRFX free?
GRFX costs $6.99, with no in-app purchases.
Is Harmonic Explorer free?
Harmonic Explorer costs $0.99, with no in-app purchases.
Do GRFX or Harmonic Explorer have ads?
Neither GRFX nor Harmonic Explorer shows ads.
Which is updated more often, GRFX or Harmonic Explorer?
GRFX ships an update monthly, and Harmonic Explorer every 7 months. Most recently, GRFX was updated on September 9, 2026 and Harmonic Explorer on September 7, 2026.

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