Grainstorm

Realtime Sampler / Synthesizer based on Granular Synthesis

The Secret Laboratory · me.rocks.grainstorm

Not rated yet 100K+ downloads v1.4.10 4.6 MB Android 4.4+ PEGI 3 · Everyone

Download APK 4.6 MB All versions

Same certificate as the other version checked Details

At a glance

Latest version: v1.4.10 (111)
Updated: Sep 2, 2018 (8 years ago)
APK size: 4.6 MB
Requires: Android 4.4+ (API 19)
CPU support: ARM 32-bit
Category: Music & Audio (app)
Permissions: 7 (3 sensitive)
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Grainstorm is an app by The Secret Laboratory in the Music & Audio category. It includes native code only for ARM 32-bit, so it won't run on 64-bit-only phones such as recent Pixels.

Since version 1.4.4, the APK grew from 4.1 MB to 4.6 MB and the minimum Android version rose from 4.0 to 4.4. It asks for 7 permissions, 3 of them sensitive: record audio, read shared storage and modify shared storage. Compared with version 1.4.4, it adds 1 new permission: “In-app purchases”. The app offers in-app purchases through Google Play.

What's new in v1.4.10

- GUI changes/cleanups - Switchable new internal / external filebrowser - Recording presets Pro Version: - Selectable output folder - Optionally asks for recording filename

Description

From the listing uploaded by “sarahstyle”.

The best sample based granular synth for any OS Use as/for: - Sound design - Experimental musical instrument - Fun - An alternative to pre-recorded music. Key Features: - Four tracks - Full control over the source sound - Infinite options to shape the grain. - LFOs and Envelope Followers - Handmade effects - Realtime Crossynthesis - Time Stretching, Phase Vocoding - Supports sound files of up to seven minutes length in any audio format First use instructions: 1. Press POWER. Upper right power button turns on audio engine which is TURNED OFF on startup to save battery. 2. Press EJECT. Load a sound file. 3. Press PLAY. Further instructions in the menu. Recommended Hardware: Fast device with what Google calls a fast audio path, which is hardware optimized for low latency audio. Cpu needs neon extension, otherwise it will crash. Not recommended for low end devices.

Version history

2 versions are listed, going back to v1.4.4. Since v1.4.10 it requires Android 4.4+.

v1.4.10 LATEST Sep 2, 2018 4.6 MB TRUSTED v1.4.4 Jan 30, 2018 4.1 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Patrick Ropohl” Not the developer's name (“The Secret Laboratory”). Names in certificates can't be verified, so this alone proves nothing.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Sep 2, 2018
Antivirus scan passed Nov 14, 2020
Signed byCN=Patrick Ropohl
Signing certificate (SHA-1)CE:17:05:A3:EB:65:66:35:2D:DD:63:E8:0B:91:90:9A:D4:11:82:8E
File MD5e216d4cfeef29e8ecf27468f276728f1
Uploaded by “sarahstyle” 6 followers · uploading since 2018

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (7)

Grainstorm requests 7 permissions, 3 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
In-app purchases (Google Play Billing) com.android.vending.BILLING
Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
Prevent the device from sleeping android.permission.WAKE_LOCK
Readpermission (custom) me.rocks.grainstormunlocker.READPERMISSION

Required hardware & features

Audio output android.hardware.audio.output
Microphone android.hardware.microphone
Portrait screen android.hardware.screen.portrait
Touchscreen android.hardware.touchscreen

Grainstorm APK: questions and answers

Is there a version of Grainstorm for older Android phones?

The current version needs Android 4.4 or later. Version 1.4.4 is the newest listed build that installs on Android 4.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.4.4 · All versions

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is Grainstorm free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Grainstorm APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is e216d4cfeef29e8ecf27468f276728f1.