GRM studio vs BLEASS Granulizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GRM studio
This music creation app offers advanced sound manipulation tools for musicians and sound designers. Explore and edit audio files through direct waveform manipulation and multiple playback processes.
- Real-time sound transformation simulation
- Direct waveform exploration
- Virtual editing and montage
- Multiple playback processes
- Granular synthesis
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GRM studio est une application de création musicale . Elle permet de puissantes transformations sonores par la manipulation directe de représentations audionumériques et l’expérimentation de processus de lectures multiples sur des documents sonores. Cette nouvelle lutherie est mise à disposition grâce au soutien du programme Investissements d’Avenir (PIA-SINÉ). Elle complète la collection de ressources de l’INA-GRM disponible sur Éduthèque « Écouter, voir, comprendre les musiques électroacoustiques et les technologies de création sonore » . Pionnier des musiques concrètes, électroacoustiques, acousmatiques, le Groupe de Recherches Musicales (GRM) développe depuis 1958, des dispositifs créatifs de traitement du son à l’usage des musiciens, des compositeurs, des designers sonores Fonctionnalités : - Simulation temps réel des principales transformations du son . Transpositions, time streching, délais, boucles mobiles, synthèse granulaire,etc. - Toutes ces opérations sont faites uniquement en combinant des opérations de lecture d'un fichier sonore. Lecture simple contrôlée en sens et vitesse, déplacement de boucles mobiles comportant plusieurs curseurs de lecture. - Exploration directe de la forme d'onde à différentes échelles - Édition et Montage virtuel
BLEASS Granulizer
Transform audio into evolving textures and soundscapes with this granular effect processor. Slice audio into grains and modulate parameters like volume, pitch, and playback direction with a real-time 3D visualizer. Sync to host tempo for dynamic sound design.
- Granular effect processor
- Real-time parameter modulation
- 3D visualizer
- Randomization controls
- Tempo syncing
- Multi-bus audio input
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BLEASS Granulizer is an innovative granular effect processor crafted for musicians, producers, and sound designers who want to transform incoming audio signals into rich, evolving textures and immersive soundscapes. It works by slicing audio inputs into small "grains" and reassembling them through real-time modulation of different parameters that you can visualize thanks to a 3D visualizer: Modulate - Volume - Pan (represented by width in the visualizer) - Size ( = grain’s duration) - Density ( = frequency of grains generation) - Offset ( = the amount of time between record and play represented by the depth in the 3D visualizer) - Backward/Forward Playback Direction - Shape ( = grain’s envelope, represented by the height dimension in the visualizer) - Warmth ( = strength of the distortion applied to the grain) - Tune ( = grains can be pitched up or down according to different modes: “Fine” / Chromatic / Major / Minor / 5th / Major 7th / Minor 7th / Octave. The amount of randomization can be set with the “dice” knobs. Density, grain size, and offset range can be freely synced or beat synced to the host’s tempo. Touching and holding the visualizer modifies pan and density. BLEASS Granulizer takes up to 4 sources from different busses as inputs (compatible host required such as AUM). When multiple busses are on, each grain is randomly extracted from one of the available sources. BLEASS Granulizer is your unique granular texture effect for reshaping any audio source into a dynamic granular soundscape in ways you've never imagined. Check out www.bleass.com/granulizer for video tutorials and more info!
Screenshots
Verdict
The clearest difference is price: GRM studio at Free against BLEASS Granulizer's $6.99. GRM studio also leads on review sentiment (100% vs 67%) and update cadence (weekly vs every 26 months). BLEASS Granulizer's advantage is rating (4.9 vs 4.0) and ratings volume (40 vs 1). 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
GRM studio is free to download; BLEASS Granulizer costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Granulizer holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: BLEASS Granulizer has 40 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of GRM studio's written reviews are positive against 67% of BLEASS Granulizer's, so the app with the better star average is not the one people write more warmly about.
GRM studio ships an update weekly, BLEASS Granulizer every 26 months. The most recent releases landed on October 18, 2026 and October 27, 2026 respectively.
| Parameter | GRM studio | BLEASS Granulizer |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 4.0 (1 ratings) | 4.9 (40 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 1 | 40 — better |
| Update frequency | Weekly — better | Every 26 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #181 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 12.0 |
| Further details — not scored | ||
| Size | 35 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Institut National de l'Audiovisuel | BLEASS |
Customer experience
GRM studio
BLEASS Granulizer
In-app purchases
GRM studio
No in-app purchases
BLEASS Granulizer
No in-app purchases









