GRM studio vs BLEASS Peaks
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 Peaks
This app transforms sound filtering into a playable musical instrument. Create complex filter responses with up to 32 peaks and animate them using MIDI input and a comprehensive modulation system. It offers a flexible effects section for further sound sculpting.
- Multi-peak bell-style filter engine
- Up to 32 resonant peaks/notches
- MIDI playable filter
- Eight simultaneous filter voices
- Comprehensive modulation system (LFOs, envelopes)
- Five-slot effects section
- Real-time visualization
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BLEASS Peaks turns filtering into a fully playable musical experience. Built around a powerful multi-peak bell-style filter engine, it lets you shape and animate sound in ways that go far beyond traditional effects. Create rich filter responses with up to 32 resonant peaks or notches, and sculpt their distribution, width, and behavior with intuitive controls. Everything is designed to be both immediate and deep, so you can quickly dial in a sound and push it into more experimental territory. Switch to MIDI mode and Peaks reveals its true potential. The filter becomes an instrument you can play, with frequency controlled directly from incoming notes. With up to eight simultaneous filter voices, you can turn rhythms into harmonies, add movement to static sounds, or create evolving textures that follow your performance. A comprehensive modulation system brings constant motion and life to your sound. 3 LFOs, envelopes, macros, and MIDI sources can be freely assigned to parameters, making it easy to build subtle movement or complex, reactive behaviors. BLEASS Peaks also includes a flexible effects section with five processing slots, allowing you to shape and enhance your sound further with distortion, dynamics, delay, and filtering. Every stage can be modulated, opening the door to deeply expressive and evolving effects. Despite its depth, Peaks remains fast, fluid, and intuitive to use. Its responsive interface, real-time visualization, and performance-ready controls make it equally at home in the studio or on stage. From precise tonal shaping to bold, animated transformations, BLEASS Peaks gives you a new way to hear and perform your sound. Optimized for iOS, it delivers high performance, low CPU usage, and a smooth, touch-friendly workflow built for modern music production. BLEASS Peaks Plugin is also available for Desktop. More information about BLEASS Peaks on www.bleass.com/peaks
Screenshots
Verdict
The clearest difference is price: GRM studio at Free against BLEASS Peaks's $14.99. GRM studio also leads on iOS requirement (9.3 vs 12.0). BLEASS Peaks's advantage is rating (5.0 vs 4.0). On review sentiment, ratings volume, ads and in-app purchases 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 Peaks costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Peaks holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | GRM studio | BLEASS Peaks |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 4.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| 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 Peaks
In-app purchases
GRM studio
No in-app purchases
BLEASS Peaks
No in-app purchases









