Sencial API vs Vocly

Sencial API is an audio-processing API that provides REST endpoints for separating, detecting, isolating, and analyzing sound. Its /v1/separate endpoint creates 2, 4, or 6 audio stems with lossless export. Scene detection classifies acoustic environments in real time, while isolation endpoints can focus on or suppress selected sources and enhance voices against background noise. The diarization endpoint separates and labels multiple speakers, and voice embeddings return 512-dimensional vectors for matching and clustering. WebSocket endpoints support low-latency streaming, and the Jobs API handles asynchronous work through polling or webhook notifications. Developers receive API documentation, a quick-start guide, and Python, JavaScript, and cURL examples. The free Starter plan includes 10 minutes of monthly processing, all endpoints, and 128 kbps MP3 output without a credit card. Developer costs $49 per month, with 300 minutes, real-time processing, WAV/FLAC output, and $0.20-per-minute overages. Enterprise pricing is custom.

Vocly is an Android app that uses on-device AI to separate phone audio and video into vocal and instrumental tracks. Standard mode separates vocals and instrumental; Advanced mode also separates drums, bass, and other sounds. It accepts MP3, M4A, WAV, FLAC, and OGG audio. The mixer can mute, solo, balance, loop, change tempo from 75–125%, shift pitch by ±6 semitones, and compare with the original. Users can add and synchronize lyrics for karaoke. Imported MP4 or MOV video can be exported with vocals or music while retaining its picture. Audio exports include M4A, WAV, and FLAC, with individual stems or custom mixes. Separations are saved locally, and a batch queue handles multiple files. After a one-time model download, processing works offline. The Free plan costs nothing and includes ads, separation, mixer, karaoke mode, and a stem library. Pro monthly and lifetime plans have prices not listed.