QC Your Stems in Seconds. No DAW Required.
Save time. Be confident in your deliverables.
The essential tool for checking and organising stems & multitracks.
As featured in Sound On Sound
The world's premier music recording technology magazine. May 2026 edition — available 29th April.
Ever bounced or received stems that just aren't right?
These errors slip through every day—and they cost you time, money, and reputation.
Alignment Mismatch
Stems not exported from the same start point — causes timing issues in the mix.
↳ Offset detected: +2.4 seconds
“These aren't rare edge cases—they happen in 1 of every 3 stem deliveries. And when they slip through, your reputation takes the hit.”
Stem Checker catches all of this — automatically.
Drop your files in. Get a full report in seconds.
Try Free for 30 DaysInstant Verification in Seconds
Drop Your Files
Drag stems directly into Stem Checker from Finder or Dropbox.
Drop Your Files
Drag stems directly into Stem Checker from Finder or Dropbox.
Automatic Analysis
Instant waveform rendering and issue detection runs automatically.
Automatic Analysis
Instant waveform rendering and issue detection runs automatically.
Verify & Export
Confirm stems are issue free, and export confident deliverables.
Verify & Export
Confirm stems are issue free, and export confident deliverables.
Built for Professional Workflows
Click any node to explore. Everything you need to verify audio with confidence.
Trusted by Audio Professionals
Join hundreds of engineers who've streamlined their workflow.
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Frequently Asked Questions
Everything you need to know about Stem Checker.
With Stem Checker, simply drag and drop your stem files into the app or use the file picker. The app instantly analyzes all stems for common issues like length mismatches, dual-mono exports, clipping, and sample rate inconsistencies. You can play back all stems in sync, solo or mute individual tracks, and visually inspect waveforms - all without opening a DAW. Any detected issues appear in the Issues Panel with one-click fixes where applicable.
Stem Checker supports all major audio formats including WAV, AIFF, MP3, FLAC, and AAC. We recommend using lossless formats (WAV/AIFF) for professional stem checking.
No hard limits! Our streaming architecture processes files of any size without loading them entirely into memory. You can check as many stems as you need in a single session.
Our algorithm analyzes the audio data across channels to detect when left and right channels contain identical content. This helps identify mono files that were incorrectly exported as stereo, which wastes file space and can cause issues with panning and stereo processing.
Yes! We have native Dropbox integration, allowing you to import and export stems directly from your Dropbox folders.
Stem Checker is free to download with a 30-day free trial. After the trial, it's $3.99/month or $29.99/year. No commitment required - cancel anytime.
Every download includes a full 30-day free trial with access to all features. No credit card required. Try it risk-free and see how it transforms your workflow.
In Stem Checker, the built-in A/B comparison tool lets you compare your stems against a reference mix. This makes it easy to identify missing parts, level differences, or export mistakes before sending files to clients, labels, or mastering engineers.
Start Verifying Stems Like a Pro
Every download includes a full 30-day free trial with access to all features. Try it risk-free and see how it transforms your workflow.
30-Day Free Trial: Then $3.99/month or $29.99/year • Cancel anytime
Available now on the Mac App Store