Comparison

GRM studio vs BLEASS Dragonfly

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

Head to head
About

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.

Highlights
  • Real-time sound transformation simulation
  • Direct waveform exploration
  • Virtual editing and montage
  • Multiple playback processes
  • Granular synthesis
Features
Read full description

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

About

BLEASS Dragonfly

This audio effect plugin offers a unique approach to tremolo, allowing music producers to add dynamic modulation to synths, vocals, and melodies. It syncs tremolo effects with input frequencies, MIDI notes, or sidechained signals for creative sonic textures.

Highlights
  • Pitch tracking for self or sidechain modes
  • MIDI input for precise triggering
  • Manual rate and amplitude control
  • Adjustable smoothing, stereo, attack, and release
  • Wild mode for saturation and waveshaping
  • Animated visualization of effect rate
Read full description

BLEASS Dragonfly is a completely new approach to tremolo effect which brings new sonic possibilities to all music producers. Make your synths, voices or any melody “vibrate” in correspondence with its own frequencies, or with external basses and leads! Just like in Billie Eilish’s song “Xanny”, Dragonfly helps you achieve the same effect as when the voice gets modulated by a heavy bass. BLEASS Dragonfly automatically syncs the tremolo effect applied on a track using various triggers: First, you can use the pitch tracking module on either the input audio track (“self mode”) or a sidechained audio track (“sidechain mode”). You also can use the midi input to trigger Dragonfly with accuracy: the tremolo will automatically sync with the notes’ frequencies. Finally, a manual mode allows you to set a fixed frequency. Then you can finetune your settings by adjusting the fine, factor, smoothness, stereo, attack & release. The “Wild” mode applies a waveshaper to the signal to produce a subtle saturation. The final tremolo effect rate is mirrored by the flapping wings of the Dragonfly. BLEASS Dragonfly is also available for Mac & Windows (AU / VST3) https://www.bleass.com/dragonfly/ ________________________________________________ Technical description: SOURCE stage: - MANUAL: Tremolo rate is set by the Rate knob. Tremolo amplitude is set by the Amplitude knob. - MIDI: Tremolo rate corresponds to the rate of the lowest MIDI note received by the plugin. Tremolo amplitude corresponds to the velocity value of this note. - SELF: Pitch tracking on the input signal gives the tremolo rate. Tremolo amplitude matches the input signal’s amplitude. - SIDECHAIN: Pitch tracking on the sidechain signal gives the tremolo rate. Tremolo amplitude matches the sidechain signal’s amplitude. - SOURCE CHANNEL: Sets the channel to be analysed for SELF and SIDECHAIN modes. - AMPLITUDE: Sets tremolo amplitude in MANUAL mode. - GAIN: Sets the input gain in MIDI, SELF and SIDECHAIN modes. DRAGONFLY stage: - RATE: Sets tremolo rate in MANUAL mode. - FINE: Offsets the detected pitch value by +/- 0.5 semitone in MIDI, SELF and SIDECHAIN mode. - FACTOR: Detected or set rate is multiplied by this factor to give the final tremolo rate. - SMOOTH: Sets the smoothing duration of rate variations. - STEREO: Sets phase difference between left and right channels. - ATTACK: Attack duration of the effect. - RELEASE: Release duration of the effect. - MODE: SIMPLE is a basic tremolo. WILD uses complex waveshaping for warm and saturated effect. - WILDNESS: Sets waveshaping strength in WILD mode. - VISUALISATION: Dragonfly wings are animated to match the rate and amplitude of the effect. Green label on the left indicates the input MIDI note and rate. Blue label on the right indicates the applied MIDI note and Rate. MIX stage: - GAIN: Output gain of the effect. - DRY/WET: Dry/wet balance. NOTE: This is an AUv3 effect which needs a compatible host that ideally offers audio sidechain or MIDI FX routing (such as AUM, Cubasis 3 or Logic)

Screenshots

GRM studio3 screens
BLEASS Dragonfly4 screens

Verdict

The call

The clearest difference is price: GRM studio at Free against BLEASS Dragonfly's $7.99. GRM studio also leads on update cadence (weekly vs every 24 months) and iOS requirement (9.3 vs 12.0). BLEASS Dragonfly's advantage is rating (4.8 vs 4.0) and ratings volume (17 vs 1). On review sentiment, 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

GRM studio is free to download; BLEASS Dragonfly costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BLEASS Dragonfly holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: BLEASS Dragonfly has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

GRM studio ships an update weekly, BLEASS Dragonfly every 24 months. Both last shipped on October 2, 2026.

Scorecard6 real differences · 4 level
GRM studio versus BLEASS Dragonfly: the parameters behind the verdict, then further details
ParameterGRM studioBLEASS Dragonfly
PriceFree — better$7.99
Rating4.0 (1 ratings)4.8 (17 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings117 — better
Update frequencyWeekly — betterEvery 24 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better12.0
Further details — not scored
Size35 MB27 MB
Age rating4+4+
DeveloperInstitut National de l'AudiovisuelBLEASS

Customer experience

GRM studio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BLEASS Dragonfly

All ratings17 ratings
Positive88.2%
Neutral11.8%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GRM studio

No in-app purchases

None

BLEASS Dragonfly

No in-app purchases

Questions

Is GRM studio free?
GRM studio is free to download, with no in-app purchases.
Is BLEASS Dragonfly free?
BLEASS Dragonfly costs $7.99, with no in-app purchases.
Which has better reviews, GRM studio or BLEASS Dragonfly?
BLEASS Dragonfly is rated higher. GRM studio averages 4.0 out of 5 from 1 ratings, while BLEASS Dragonfly averages 4.8 from 17 ratings.
Do GRM studio or BLEASS Dragonfly have ads?
Neither GRM studio nor BLEASS Dragonfly shows ads.
Which is updated more often, GRM studio or BLEASS Dragonfly?
GRM studio ships an update weekly, and BLEASS Dragonfly every 24 months. Most recently, GRM studio was updated on October 2, 2026 and BLEASS Dragonfly on October 2, 2026.

Other comparisons