Fadr Review 2025: Complete Guide to AI Stem Splitter, Remix Maker & Music Creation Platform

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Quick Summary

Fadr is a web-based AI music platform specializing in stem separation, remix creation, and innovative text-to-instrument plugins. Founded by Gabriel Earle and Robert Thomas, the platform offers a unique combination of 16-stem separation, AI-powered remix tools, and groundbreaking SynthGPT/DrumGPT plugins that create playable instruments from text descriptions. The standout feature: 95% of Fadr is completely free, including unlimited stem splits and MP3 downloads — making it one of the most generous free offerings in the AI music space.

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Company Background

Founders

Gabriel Earle — Co-Founder

• Education: University of Waterloo
• Technical visionary behind Fadr's AI music tools
• Active in music technology research (attended ISMIR conference 2024)
• Contact: gabe@fadr.com

Robert Thomas — Co-Founder

• Technical development and business operations

Corporate Structure

Legal Entity: Pebble LLC

• Registered in Fairfax Station, Virginia, USA
• Operating Status: Active
• Company Type: For Profit

Funding

• Seed Round (February 2023): Undisclosed amount
• Lead Investor: Accelerator Centre
• The company has operated lean, focusing on product development over aggressive fundraising

Company Philosophy

From Fadr's website:

"We think music technology's role is to create new sounds."

The platform emphasizes creativity enhancement rather than replacement — AI handles synchronization, mastering, and technical processing while leaving all creative decisions to the user.

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Core Products & Features

1. AI Stem Splitter

Fadr's flagship feature separates any song into individual instrument tracks.

Free Plan (Fadr Basic) — 4 Stems:

• Vocals
• Drums
• Melodies
• Bass

Paid Plan (Fadr Plus) — 16 Stems:

• Vocals (Lead + Background separated)
• Instrumental
• Drums (Kick, Snare, Other Drums separated)
• Bass
• Piano
• Electric Guitar
• Acoustic Guitar
• Strings
• Wind
• Other Melodies

Technical Specifications:

• File Size Limit: 200MB
• Processing Time: Under 5 minutes per song
• Output Formats: MP3 (free), WAV 32-bit lossless (Plus)
• Upload Limit: 1 hour tracks (Plus)
• Concurrent Processing: Yes (Plus only)

Additional Stem Features:

• MIDI Extraction: Get MIDI files for vocals, bass, drums, and melody stems
• Key Detection: Automatically identifies song key
• Tempo/BPM Detection: Finds exact BPM
• Chord Progression Detection: Identifies all chords in the song

2. AI Remix Maker

Create remixes and mashups without music production experience.

Features:

• Upload multiple songs
• AI handles synchronization automatically
• Change key and tempo of any track
• Beat-matching and alignment
• Genre transformation
• Real-time preview
• Export as complete remix

How It Works:

• Upload source tracks
• AI analyzes tempo, key, and structure
• Select elements from each track (vocals from song A, drums from song B)
• AI synchronizes everything
• Preview and adjust
• Export final remix

Use Cases:

• Creating mashups for DJ sets
• Bootleg remixes
• TikTok/Instagram content
• YouTube edits
• Karaoke tracks

3. DJ Mode (Beta)

Browser-based DJ environment for live performances.

Features:

• Two virtual turntables
• Real-time stem control (mute/solo instruments)
• Automatic beat-matching
• Tempo and key synchronization
• Live transitions and mashups
• No software installation required

Target Users:

• Beginner DJs learning skills
• Content creators needing quick mixes
• Hobbyists experimenting with DJing

4. SynthGPT 2 — Text-to-Instrument Plugin

Revolutionary Feature: Create playable synthesizer instruments from text descriptions. How It Works:

• Type a description: "warm vintage 80s analog pad"
• AI generates matching instrument sound
• Get unlimited variations with arrow buttons
• Fine-tune with ADSR envelope and filters
• Play via MIDI controller or DAW timeline

Available Formats:

• Web app (online)
• Mobile app (iOS/iPhone/iPad)
• VST3 plugin (Windows)
• AU plugin (macOS)

Sound Design Controls:

• Attack, Decay, Sustain, Release (ADSR) envelope
• Low-pass, High-pass, Band-pass, Notch filters
• 12dB/oct or 24dB/oct filter slopes
• Real-time spectrograph visualization
• Strictness control (how closely AI follows prompt)
• Melodic control (force tonal/allow percussive)

Prompt Tips:

• Use literal descriptions: "dark intimate felted piano"
• Add adjectives for nuance: "bright, airy, ethereal"
• Specify playing style: "bowed violin" vs "plucked violin"
• Avoid copyrighted terms (artist names, song titles)

Licensing: All sounds generated by SynthGPT are 100% royalty-free. Songs you create are 100% yours.

5. DrumGPT — Text-to-Drum Kit Plugin

Launched April 2025: Create complete drum kits from text descriptions. How It Works:

• Describe desired drum sound: "90s industrial hard techno"
• AI generates 16-piece drum kit
• Each drum mapped to notes C2-D#3 (MIDI standard)
• Fine-tune individual drums
• Use with any MIDI sequencer

Features:

• 16 drum sounds per kit
• Individual pitch, volume, and ADSR controls for each drum
• Save favorite kits to personal library
• Works with all major DAWs
• Internet required for generation, offline playback after

Available Formats:

• VST3 plugin (Windows)
• AU plugin (macOS)
• Web app

Licensing: All drum sounds are 100% royalty-free.

6. Stems Plugin (DAW Integration)

Use Fadr's stem separation directly inside your DAW.

How It Works:

• Drop plugin onto any audio track
• Record playback or drag-drop audio files
• AI separates into stems
• Mute, solo, and mix individual stems
• Drag stems back into DAW timeline

Compatibility:

• VST3 (Windows, macOS)
• AU (macOS)
• Works with all major DAWs: Logic Pro, Ableton Live, FL Studio, Pro Tools, etc.

Requirements:

• Fadr Plus subscription
• Internet connection for processing

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Pricing Plans 2025

Fadr Basic (Free Forever)

Fadr Plus ($10/month or $100/year)

Current Sale: $50/year (50% off)

Value Comparison

Fadr's Advantage: Unlimited free stems with no monthly cap — most competitors limit free usage severely.

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How Fadr Compares to Competitors

Fadr vs LALAL.AI

Verdict: Fadr offers more features; LALAL.AI has slightly better stem quality.

Fadr vs Moises

Verdict: Fadr better for production; Moises better for practice/learning.

Fadr vs Gaudio Studio

Verdict: Gaudio has better separation quality; Fadr has more features.

Stem Quality Rankings (Industry Tests)

Based on MusicTech's 2025 stem separation comparison:

• Lalal.ai — Best for vocals
• Gaudio Studio — Best overall quality
• AudioStrip — Best free option
• Moises — Best for bass
• Fadr — Most features, good quality

Fadr's stem quality is "not the highest quality" according to LANDR's tests, but its feature set and free tier make it highly competitive.

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Best Use Cases

Ideal For:

• DJs — Quick stem preparation for live sets, mashups, custom edits
• Remix Producers — Building bootlegs, creating new versions of songs
• Content Creators — Background music for TikTok, YouTube, Instagram
• Music Educators — Teaching song structure, rhythm, harmony
• Hobbyist Producers — Experimenting with remixing without DAW expertise
• Sound Designers — Creating unique instruments with SynthGPT/DrumGPT
• Karaoke Enthusiasts — Removing vocals for sing-along tracks
• Sample Hunters — Extracting elements for sampling (check copyright!)

Not Recommended For:

• Professional Studio Work Requiring Pristine Quality — LALAL.AI or Gaudio better
• Heavy Mobile Users — Limited mobile app (iOS only)
• Users Needing Voice Cloning — Not available
• Live Performance (Professional) — DJ mode is still beta
• Offline-Only Workflows — Requires internet connection

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User Reviews & Feedback

Positive Reviews

"I use Fadr.AI more than a year, from May 2023. It was first AI I met. What I am really looking for is voice cloning and voice cleaning features. I am sure they will be soon."

"Fadr is a futuristic marvel. The technology involved in this tools seem to be drawn from science fiction. Please keep up the good work. Their customer support was quick."

"I use this service regularly to stem tracks. I've made it a part of my regular workflow while building DJ sets. I've also used it in music production. Great service that I 100% recommend."

"Quick action taken. There was a mistake on a subscription that I activated for my son. I was billed $100 instead of $10. I contacted them immediately and on the same day they reversed the charge of $100. Very impressed with their quick response."

"After subscribing to Plus, I found the tool, although very cool and does amazing things, it wasn't suitable for my workflow. I emailed to ask for a refund and they agreed, no questions asked."

Common Criticisms

• Stem Quality Not Best-in-Class — Some competitors produce cleaner separations
• Background Vocals Detection — "Almost undetectable" in some tests
• Sibilant Hissing — Reported in some vocal extractions
• Limited Mobile Support — iOS app only, no Android
• Internet Dependency — Requires connection for all processing

Customer Support

Generally praised as responsive and helpful:

• No-questions-asked refund policy
• Quick response to billing issues
• Contact via form, email (contact@fadr.com), or Instagram DM

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Technical Specifications

Supported Formats

Input:

• MP3, WAV, and other common audio formats
• File size limit: 200MB
• Track length: Up to 1 hour (Plus)

Output:

• MP3 (free)
• WAV 32-bit lossless (Plus)
• MIDI files (for stems)

Platform Compatibility

Web App:

• Works in modern browsers (Chrome, Firefox, Safari, Edge)
• No installation required

Plugins:

• VST3 (Windows)
• AU (macOS 10.10+)
• Compatible with: Logic Pro, Ableton Live, FL Studio, Pro Tools, Reaper, Studio One, etc.

Mobile:

• iOS app (SynthGPT)
• No Android support currently

Processing

• Cloud-based AI processing
• Internet connection required
• Processing time: ~3-5 minutes per song
• Unlimited concurrent processing (Plus)

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Unique Innovations

World's First Text-to-Instrument

Fadr's SynthGPT is genuinely pioneering — no other platform offers text-controlled synthesizer generation in a DAW plugin format. This is a significant innovation for sound designers who can now describe sounds rather than program them.

16-Stem Separation

While some competitors offer similar stem counts (Moises has comparable options), Fadr's combination of 16 stems + MIDI extraction + remix tools in one platform is unique.

Generous Free Tier

Unlimited free stem splitting is exceptionally rare. Most competitors (LALAL.AI, Moises, Gaudio) impose strict limits on free usage. Fadr's approach democratizes access to AI music tools.

All-in-One Platform

The combination of:

• Stem splitting
• Remix maker
• DJ mode
• Text-to-synth (SynthGPT)
• Text-to-drums (DrumGPT)
• DAW plugin
• MIDI extraction

...in a single platform is unmatched by competitors.

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Pros & Cons

Pros

• Generous Free Plan — Unlimited 4-stem splits, MP3 downloads
• 16-Stem Separation — Industry-leading stem count
• MIDI Extraction — Unique feature for production workflows
• SynthGPT/DrumGPT — Revolutionary text-to-instrument tools
• Remix Tools — Create mashups without DAW knowledge
• DJ Mode — Browser-based mixing
• DAW Plugin — Seamless workflow integration
• 100% Royalty-Free — All generated sounds are yours
• Responsive Support — Quick refunds, helpful team
• Affordable Pro Plan — $10/mo is competitive

Cons

• Stem Quality — Not best-in-class compared to LALAL.AI
• Background Vocal Detection — Weak in some tests
• No Android App — iOS only for mobile
• Internet Required — No offline processing
• DJ Mode Beta — Still in development
• No Voice Cloning — Competitors offer this
• Limited Audio Cleanup — No de-noise or de-reverb tools
• Processing Speed — 3-5 minutes can feel slow

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Final Verdict

Rating: 4.0/5

Fadr stands out as the most feature-rich free stem splitter available. While competitors like LALAL.AI and Gaudio Studio may produce slightly cleaner separations, Fadr's combination of unlimited free stems, MIDI extraction, remix tools, DJ mode, and revolutionary SynthGPT/DrumGPT plugins creates an unmatched value proposition. Strengths:

• The SynthGPT and DrumGPT plugins are genuinely innovative
• Unlimited free usage is exceptional in this space
• All-in-one platform eliminates need for multiple tools
• MIDI extraction is a killer feature for producers

Concerns:

• Stem quality trails premium competitors
• Mobile support is limited
• DJ mode needs more development

Recommendation

Use Fadr if:

• You need unlimited free stem splitting
• You want remix/mashup creation tools
• You're interested in text-to-instrument generation
• You're a DJ preparing tracks for sets
• You're a hobbyist exploring AI music tools
• Budget is a primary concern

Look elsewhere if:

• You need absolute best stem quality (→ LALAL.AI, Gaudio)
• You need practice/learning tools (→ Moises)
• You need Android support
• You need voice cloning
• You need offline processing

Better Alternatives by Use Case

• Best Stem Quality: LALAL.AI, Gaudio Studio
• Best for Practice/Learning: Moises
• Best Mobile App: Moises (Android + iOS)
• Best Free Option: Fadr (unlimited) or Ultimate Vocal Remover 5 (open source)
• Best for Professional Studio: Steinberg SpectraLayers, Hit'n'Mix RipX

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Quick Reference

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Review last updated: December 2025 Data sources: Official Fadr website, Crunchbase, Tracxn, MusicTech, LANDR Blog, user reviews