Boom Lab vs Stemzel

Boom Lab is a futuristic mobile music creation app for building beats, mixing tracks, recording original sounds, and organizing project ideas on your device. Start in Beat Lab with glowing pads, BPM controls, loop recording, quantize, swing, and a collapsible mini synth keyboard. Move into DJ Lab to load two decks, blend tracks, scratch virtual vinyl, adjust deck volume, and save sample ideas back into your crate. Stem Lab tools provide the interface for vocals, drums, bass, and instrumental separation workflows as the app evolves. Boom Lab is designed around local device storage. Saved projects, sample metadata, and recorded sounds are kept on your device so you can keep working smoothly and offline. Current features include: - 4-pad beat machine - Loop recording controls - BPM, swing, and quantize controls - Collapsible mini piano synth - Landscape-style DJ mixing board - Two deck import and playback controls - Virtual vinyl scratch interaction - Sample crate for saved sounds - Original sound recorder - Stem Lab placeholder workflow - Saved project vault - .boom project export and import - Device-first offline workflow Boom Lab is free with ads. The only paid upgrade is Boom Lab Premium, which removes ads. Core creation tools are not locked behind a paywall.

Stemzel splits any song into four stems — vocals, drums, bass, and other instruments — entirely on your iPhone. No cloud uploads. No subscription. No account required. IMPORT YOUR AUDIO • File — pick from Files, iCloud Drive, or anywhere on your device • URL — paste a direct link to an MP3, M4A, or WAV file • Record — capture audio with your microphone and split it instantly MIX AND EXPORT • Mute or solo any stem to hear exactly what you want • Play back your mix with a built-in waveform scrubber • Export individual stems or your full mix to the Files app PRIVATE BY DESIGN Every split runs on your device using on-device AI. Your music never leaves your iPhone. No servers, no tracking, no ads. ONE-TIME UNLOCK Pay once, use Stemzel forever. Unlimited splits and downloads — no monthly fees, ever. PERFECT FOR • Musicians learning parts by ear • DJs and producers isolating elements • Karaoke and acapella practice • Remixing and sampling workflows • Anyone who wants stems without uploading to the cloud Stemzel is built for speed and privacy. Import a track, wait a moment while it separates, then mute the vocals, solo the drums, or export everything — all from your pocket. Questions or feedback? Visit stemzel.com/support