KORG EZ Rec vs GRFX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KORG EZ Rec
Easily record piano performances on your iPhone, capturing both video and audio in one seamless process. Enhance your recordings with simple editing tools before sharing or saving them. Enjoy a stress-free, ad-free music creation experience.
- Record piano performances with KORG PianoRec
- Simultaneous video and audio recording
- Simple editing tools
- Share or save recordings
- Ad-free experience
- Use with built-in microphone
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Capture your music, your way. EZ Rec makes recording easy. 1.Pair with KORG PianoRec to easily and intuitively record piano performances on your iPhone. 2.Record video and audio with ease. No more switching between apps. 3.Add the finishing touches to your recordings with the simple editing tools in EZ Rec, then share them or save them to your camera roll. 4.No annoying ads! Have a fun, stress-free recording experience. Important notes - For iPhones with a Lightning connector, an Apple Lightning to USB 3 Camera Adapter is required for use with PianoRec. - It may take a few seconds for EZ Rec to recognize PianoRec after connecting to your iPhone. If it is not recognized after a few seconds, please check the connection. - EZ Rec can also be used with the built-in microphone, but all recorded audio will be mono instead of stereo. - For instructions on connecting to PianoRec, please refer to the "How to connect with PianoRec" screen in EZ Rec.
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is price: KORG EZ Rec at Free against GRFX's $6.99. KORG EZ Rec also leads on rating (5.0 vs 4.6). GRFX's advantage is ratings volume (10 vs 1). On update cadence, 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
KORG EZ Rec is free to download; GRFX costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
KORG EZ Rec holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GRFX has 10 ratings behind it against 1, so its average is the more settled of the two.
KORG EZ Rec ships an update every 5 weeks, GRFX every 2 months. The most recent releases landed on October 21, 2026 and October 30, 2026 respectively.
| Parameter | KORG EZ Rec | GRFX |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 5.0 (1 ratings) — better | 4.6 (10 ratings) |
| Positive reviews | — | 77.8% of reviews |
| Number of ratings | 1 | 10 — better |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 117 MB |
| Age rating | 4+ | 4+ |
| Developer | KORG INC. | Imaginando Lda |
Customer experience
KORG EZ Rec
GRFX
In-app purchases
KORG EZ Rec
No in-app purchases
GRFX
No in-app purchases









