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OffgridStem Review

OffgridStem separates audio tracks into six distinct stems—vocals, drums, bass, piano, guitar, and other instruments—entirely on an iPhone without server uploads.

shipped Sep 16, 2026voicefreemium
Monthly visits1/mo
voicemarketing
OffgridStem — product screenshot

Why it matters

1Performs on-device stem separation for 6 instrument types on iOS.
2Ensures privacy with no data uploaded to external servers.
3Offers a freemium model with a one-time purchase for OffgridStem Pro at £24.99.
4Functions completely offline, including in Airplane Mode.

About OffgridStem

Business Model
Per-Job Pricing
Free Credits
Limited separations per month
Platforms
iOS
Target Audience
Musicians and audio producers

Pricing Plans

Pro
£24.99 / one-time
  • • Unlimited separations
  • • Higher-quality exports
Free
Free
  • • Limited separations

overview

What is OffgridStem?

OffgridStem is an AI-powered tool developed by Offgrid Studio that enables musicians, DJs, producers, mixing engineers, and music students to separate audio tracks into individual stems. It performs on-device machine learning to split a song into six distinct stems: vocals, drums, bass, piano, guitar, and other instruments, directly on an iPhone.

features

Key Features of OffgridStem

OffgridStem is distinguished by its privacy-focused, on-device processing capabilities, allowing users to perform complex audio separation without compromising data security or requiring an internet connection. Its core features are designed to provide a robust and convenient mobile solution for audio professionals and enthusiasts.

  • On-Device Processing: All stem separation occurs locally on the iPhone using machine learning, ensuring no audio data is uploaded to external servers.
  • Six-Stem Separation: Capable of separating a track into vocals, drums, bass, piano, guitar, and other instruments in a single pass.
  • Offline Functionality: The tool operates completely offline, including in Airplane Mode, providing flexibility for users in various environments.
  • Privacy and Security: Built without networking code for sending recordings or usage data, reinforced by a network audit in August 2026 confirming no outbound connections.
  • One-Time Purchase: The OffgridStem Pro version is available via a single payment of £24.99, eliminating recurring subscription fees.
  • Free Tier: Offers a 'Free to try' option with a limited number of separations per month.

use cases

Who Should Use OffgridStem?

OffgridStem is primarily designed for individuals and professionals in the music industry who require efficient and private audio stem separation on a mobile platform. Its on-device processing makes it particularly suitable for sensitive or unreleased work.

  • Musicians: For creating instrumental versions of songs for practice or isolating specific instrument parts to learn.
  • DJs and Producers: To pull acapellas for remixes, create custom instrumentals, or prepare individual stems for mixing.
  • Mixing Engineers: For prepping stems for further audio mixing and mastering, especially when working with confidential client material.
  • Music Students: To isolate piano or guitar parts for focused study and transcription.
  • Users with Privacy Concerns: Ideal for processing sensitive audio without uploading data to cloud servers.

how to use

How to Use OffgridStem

OffgridStem provides a straightforward process for separating audio tracks directly on an iOS device. Users can import audio and initiate the on-device separation with minimal steps.

  • 1Download the OffgridStem application from the Apple App Store onto an iOS device.
  • 2Import an audio track from the iPhone's local storage or other compatible sources into the app.
  • 3Select the desired stem separation option to begin processing.
  • 4Allow the on-device machine learning model to separate the track into 6 stems (vocals, drums, bass, piano, guitar, other).
  • 5Export the separated stems for use in other applications or for further mixing and production.
  • 6For unlimited separations and higher quality, purchase OffgridStem Pro for a one-time fee of £24.99.

pricing

OffgridStem Pricing & Plans

OffgridStem operates on a freemium model, offering a free tier with limited functionality and a professional tier available through a one-time purchase. This structure caters to both casual users and professionals seeking unlimited, high-quality stem separation.

  • Free Tier: Offers a limited number of stem separations per month, allowing users to try the core functionality.
  • OffgridStem Pro: Available for a one-time purchase of £24.99, providing unlimited stem separations and higher-quality exports without any recurring subscription fees.

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Pros

  • +On-device processing ensures complete data privacy and security, with no audio uploaded to servers.
  • +Functions entirely offline, including in Airplane Mode, offering flexibility in various environments.
  • +Offers a one-time purchase for OffgridStem Pro (£24.99), avoiding recurring subscription costs.
  • +Separates tracks into 6 distinct stems (vocals, drums, bass, piano, guitar, other) directly on an iPhone.
  • +User-friendly mobile application interface for iOS devices.

Cons

  • −Limited to iOS platform, not available on Android, desktop, or web.
  • −Free tier has a limited number of separations per month.
  • −Does not offer an API for integration into other applications.
  • −May have performance limitations compared to more powerful desktop-based solutions for very complex audio.

Similar Tools

OffgridStem vs Competitors

OffgridStem differentiates itself in the market primarily through its commitment to on-device processing and user privacy, setting it apart from many cloud-based or desktop-only alternatives.

1
Ultimate Vocal Remover (UVR)↗

Utilizes advanced AI models for high-quality vocal and instrument separation, all processed locally on your computer.

Unlike OffgridStem, UVR is a desktop application, requiring a computer for processing rather than an iPhone. It offers more control and model options but sacrifices mobile convenience.

2
Spleeter↗

An open-source library from Deezer for training and using state-of-the-art source separation models.

Spleeter is a command-line tool that requires technical knowledge (Python installation, command-line usage) to operate, unlike OffgridStem's user-friendly app interface. It's also a desktop solution, not mobile.

3

A widely used, free, open-source audio editor that can perform stem separation through community-developed plugins, processed locally.

While Audacity itself is free and open-source, finding and installing a suitable stem separation plugin adds a layer of complexity compared to OffgridStem's integrated mobile app. It's also a desktop application, not mobile.

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