Smrt Stem ships updates as we find things worth fixing. We're honest about what changed — bugs, improvements, new features, all of it. If you want the short version, read the headline. If you care about details, each release below has them.
Apple Silicon performance and reliability improvements
What's new
- Faster launch and improved memory use on Apple Silicon Macs. Addressed a performance issue where the app could take 30+ seconds to launch the first time on modern M-series Macs (M1 through M4). Launches are now fast on first run and every run thereafter, with reduced ongoing memory use.
Fixes
- Improved track reordering. Refined how mute and solo behave when tracks are dragged to reorder them, ensuring both controls target the correct audio file. Also refined drag-and-drop positioning for smoother track rearrangement.
- Smoother pause, stop, and playback transitions. Playback transitions now use a fast fade to eliminate audible clicks on pause, stop, and at the natural end of a track. Also improved how playback recovers when the system is briefly under heavy load.
- Improved handling of filenames with quote characters.
Under the hood
- Various reliability and stability improvements.
Reliability hotfix
Fixes
- Improved license validation resilience. Hardened how the app handles unexpected responses from the licensing service. Short-lived service interruptions no longer affect active licenses.
- Clarified click detection scope on long files. Extended the click detection analysis window, and added an informational note in scan results when files exceed the analyzed duration so you always know exactly what was checked.
- Restored in-app purchase flow. The "Buy Smrt Stem" and trial badge links now open the correct checkout and license screens.
Playback and offline reliability
Fixes
- Fixed playback pitch on non-48kHz systems. Playback is now always at the correct pitch regardless of the system audio output sample rate.
- Truly offline operation. Removed a font CDN dependency so the app no longer makes outbound network requests at launch. Fonts are now fully bundled.
Activation and trial signup fixes
Fixes
- Fixed license activation. Resolved an issue where valid license keys were being rejected during activation.
- Fixed trial email signup. Trial signups now reliably reach our system.
Public launch
What's new
- Smrt Stem is live. A desktop quality control app for stems. Checks sample rate, bit depth, channel count, duration, clipping, silence, glitches, clicks, and pops — across every file in a folder, in seconds.
- 14-day free trial. Full functionality, no credit card required.
- One-time purchase. $59 USD. Two-machine activation. No subscription, ever.