A Gndsoft product family
Small, sharp tools for musicians and creators. Tune, keep time, pull a song apart, tidy up audio and reframe video — each app does one job and does it well.
The apps
Precision tuner
Accurate tuning, wherever you play.
Real-time pitch detection with harmonic-aware modes and a standalone Wear OS companion. Audio is analyzed on the device and never leaves it.
Intelligent metronome
Precision rhythm for every session.
A flexible metronome that detects BPM from audio, handles custom meters and subdivisions, and keeps your songs and setlists ready for the stage.
AI stem separation
Hear every part. Practice your way.
Split any song into vocals, drums, bass and more, follow the detected chords, then rebalance and export the mix you want to practice with.
AI bass transcription
Turn any song into bass TAB.
Upload an MP3 and get playable bass TAB, an isolated bass track, and a backing track without bass — with quick in-browser corrections.
Smart audio editor
Keep every word. Shorten the wait.
Remove long silent pauses and change audio length naturally, while keeping speech intact and pitch unchanged.
Vertical video toolkit
One video. Every format that matters.
Turn finished horizontal footage into 9:16 clips for Reels, Shorts and TikTok with orientation-aware layouts, templates and batch rendering.
Principles
Each app focuses on a single task you do often, so it opens fast and gets out of the way.
Stem separation, BPM and chord detection, smart reframing — AI does the tedious part, you stay in control.
Tuners and metronomes analyze audio on your device. Uploaded files are processed and then deleted.
Wear OS companions and web apps meet you where you practice, record and publish.
Built by Gndsoft
ACU is designed and engineered by Gndsoft, a boutique software studio building AI products and custom software. Questions, feedback or partnership ideas — we read every message.