Grainstorm

1.9.5

The Secret Laboratory

4.46

1,065 reviews

100,000+
Downloads

Free

Sampler / Looper/ Synthesizer based on Granular Synthesis

Grainstorm by The Secret Laboratory is a lightweight granular-synthesis tool for sound design and experimental music, functioning as a sampler/looper with four tracks and built-in effects. It has a strong download footprint and steady activity in the last 30 days, making it a solid choice for mobile granular synthesis enthusiasts. 100,000+ total downloads and 380 downloads in the last 30 days highlight its ongoing popularity.

Pros & Cons

Unique granular synthesis with vocoder capabilities
Four-track workflow enables versatile layering
Lightweight, mobile-friendly performance
Free to start with an option to unlock recording via in-app purchase

Limited to four tracks compared to multi-track rivals
May lack MIDI/live performance features seen in some competitors
Free version is a demo; full features require in-app purchase

About Grainstorm

Grainstorm is a music & audio app developed by The Secret Laboratory.

Download Statistics

Grainstorm has been downloaded 240 thousand times. In the last 30 days, the app was downloaded 380 times.

User Ratings

Grainstorm is rated 4.46 out of 5 stars. The rating is based on 1.1 thousand ratings.

App Information

Grainstorm is FREE to download. The APK download size is 12.42 MB. The latest version available is 1.9.5. The last update was on May 26, 2026.

Technical Requirements

Grainstorm requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2013.

Description

Use as/for: • Tool for Sound Design • Experimental Musical Instrument • Fun

More data about Grainstorm

Price	Free to download
Total downloads	240 thousand
Recent downloads	380
Rating	4.46 based on 1.1 thousand ratings
Ranking	Not ranked
Version	1.9.5
APK size	12.4 MB
Number of libraries	10
Designed for Android	6.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Grainstorm app

Grainstorm compared with similar apps

Common keywords of similar apps

Press Vocoder Power Fixed Learning Parameter Sound Audio Version Midi

Keywords missing from this app

Sampler Live Track Sample Effects Music Load Demo Synthesizer Samples Record Tracks Support Performance Play Sequencer Pro Drum Quality App Effect Full Export Features Save Recorder Https Interface Synth Editor Recording Pattern Link High Create Stomper Sounds Studio Instruments Snapshot Cloud Time Mode Recent Engine Ableton

Google Play Rating history and histogram

Rating history

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820

Downloads over time

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Grainstorm has been downloaded 240 thousand times. Over the past 30 days, it averaged 13 downloads per day.

Changelog of Grainstorm

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Developer information for The Secret Laboratory

The Secret Laboratory

tsl@rocks.me

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Comments on Grainstorm for Android

★★★★★ OptimizticPizza · Nov 9, 2022

Song: alvedon retire. On the sidebar for fx go to 4 LFO1 Target: Pitch. CPS: 20 Bound A and bound B move by .01 increments so Bound A-0.01. Bound B 0.01 Slowly push them further apart using the + & - on both You can slowly morph into scary and then back. Keep it to -0.01 and 0.01 Go to LFO2 CPS: 20 Target : Density Bound A 95. Bound B 420. Slowly lower CPS. Then raise cps back to 20 After that Set Bound A and Bound B back to 250 LFO3 Target: Read off set CPS .2 Bound A: 490 Bound B: 520 drunkFX

★★★★★ S l B · Sep 14, 2024

Very powerful app for granular synthesis and sound design. The midi control over loop playback position turns it into an experimental sampler. I would pay again for a VST version.

★★★★★ Path Lp A · Apr 3, 2024

Wata app ;)) slack time murder's.every Open this app take you in da deep Frequent Ocean:)) thanks Grainstorm 🖤🖤

★★★★★ Alex · May 27, 2022

Awesome. This app is deep and complex. But you can get some amazing sounds with samples. Only issue is I upgraded to full on my tablet but the full version is not showing on my phone. Landscape view would be great too.

★☆☆☆☆ *&39;# *&39;er T'Floobius · Jan 8, 2026

Really nice looking piece of useless garbage?.. Cant get this app able to do anything useful except make sounds/music sound stupid, just a messy kids toy!, buggy as F rarely loads up without everything jumbled up and not scaled to work, Haven't these devs ever thought that users could do with some built in interactive help a tutorials?, this program does absolutely nowt!!! Time wasters.....

★★☆☆☆ Allen Favrot · Mar 16, 2023

Loopspins when recorded cause the disk drive to eject.

★☆☆☆☆ Justice Bernal · Aug 25, 2022

Doesn't work on Google Pixle Chrome :-(

★☆☆☆☆ Andrew Cecka · Oct 17, 2025

Fully broken on my S25 Ultra. Freezes if I try to add any track beyond 1. Seems like it may still be the mic issue that was thought solved with the new update.

★★☆☆☆ Mark S · Sep 25, 2024

3.5 stars if it didn't start running every day for no reason using 30% of my entire days' battery capacity. Without the battery issue it's ok, unfinished and unpolished, but it does do a lot

Google Play Rankings for Grainstorm

This app is not ranked

Technologies used by Grainstorm

12 permissions · 10 libraries

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Trust & Safety: The app requests standard network access, notifications, and foreground service permissions, plus RECORD_AUDIO for audio input. It also uses license and billing checks. This pattern is typical for audio apps; users should review microphone usage and persistent foreground service needs during operation.

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