Materia vs Grasswhistle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Materia
Transform any audio sample into a playable instrument by analyzing its harmonic partials. Reshape the spectrum, control envelopes, and add effects to create unique sounds. Explore new sonic territories or retain the original sample's character.
- Sample analysis into harmonic partials
- Control frequency, amplitude, phase, and envelopes
- Reshape spectral content
- Add resonant material models
- Apply filtering and modulation
- Polyphonic playback
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Materia is an additive re-synthesizer that transforms any sample into a playable instrument. Load a sample and Materia analyses it into harmonic partials, each with its own frequency, amplitude, phase, and complex envelope. From there, you can reshape the spectrum, redraw how individual partials evolve, add resonant material models, filtering, and modulation, then play the result polyphonically. Keep the character of the original sample or push it into completely new territory.
Grasswhistle
Create unique melodies from chord progressions with a customizable arpeggiator. Offers randomization, performance options, and over 50 presets. Use it as a standalone instrument or a MIDI effect to sequence other devices.
- Customizable arpeggios
- Chord progression sequencing
- Randomization features
- Performance options
- 50+ factory presets
- Standalone instrument
- MIDI effect
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Customizable arpeggios, right at your fingertips. Grasswhistle is a free arpeggiator from Aqeel Aadam Sound. Build a sequence of notes to arpeggiate your chord progressions in brand new ways. Grasswhistle adapts to whatever chord you throw at it, creating a seamless and recognizable melody from any chord progression. Find instant inspiration with robust randomization features, performance options, and 50+ factory presets. Grasswhistle can be loaded as an instrument or as a MIDI effect. As an instrument, it has a built-in synth voice for quick and easy playback. As a MIDI effect, you can sequence your favorite devices with endlessly inspiring arpeggios. Grasswhistle is completely free, though you can choose to send a tip inside of the standalone app. This is completely optional, but always appreciated! This donation does not unlock any additional functionality. Also available for macOS and Windows in VST3 / AU / AAX formats from Aqeel Aadam Sound.
Screenshots
Verdict
The clearest difference is price: Grasswhistle at Free against Materia's $9.99. Grasswhistle also leads on ratings volume (3 vs 1) and iOS requirement (13.0 vs 15.0). Materia's advantage is in-app purchases (none vs 2) and chart position (#92 vs unranked). On rating, ads 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
Grasswhistle is free to download; Materia costs $9.99 up front. Grasswhistle sells 2 one-off in-app purchases. Materia asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Materia against 5.0 for Grasswhistle. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
| Parameter | Materia | Grasswhistle |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | — | Every 2 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Best chart rank | #92 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | AudioThing Ltd. | Aqeel Aadam |
In-app purchases
Materia
No in-app purchases
Grasswhistle
- Small coffee$3.00
- Large coffee$5.00
