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Checksub vs Vocal Isolator

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Checksub compared with Vocal Isolator
Detail ChecksubVocal Isolator logo Vocal Isolator
What it doesAI-powered subtitle and dubbing generator for video and audio content localization AI vocal and music separator for creating acapellas, instrumentals, and karaoke tracks
StageEstablished Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Not given
PricingFree trial with 1 hour of video translation credits. Paid plans: Junior $18/month (2 hours credits) or $12/month annually (24 hours credits); Starter $59/month (5 hours credits) or $48/month annually (60 hours credits); Enterprise from $299/month with custom credits. Credits are consumed at differen Free tier: 30-second preview without sign-in, 1 minute free downloads after sign-in, 10 clips up to 30 seconds daily. Pro: $9.99/month for 20 hours monthly. Pay-as-you-go: 20 Minute Pack $1.99, 1 Hour Pack $4.99, 10 Hour Pack $14.99.
Key features
  • Auto-subtitles generation using advanced AI
  • Translation in over 200 languages
  • AI voice cloning in 30 languages
  • Voice isolation to separate dialogue from background audio
  • Subtitle styling and animation customization
  • Script to subtitles conversion with synchronization
  • Burn-in subtitle export and subtitle file formats
  • Lip-sync technology (Beta)
  • Advanced online editor for subtitle and dubbing refinement
  • YouTube channel integration and social media optimization
  • BS-RoFormer AI model for source separation with 18.10 dB instrumental SDR on MVSEP leaderboard
  • Supports MP3, WAV, FLAC, AIFF, M4A, AAC, OGG, OPUS audio and MP4, MOV, M4V, WEBM, MKV video up to 2 GB
  • Returns both tracks as 44.1 kHz, 16-bit WAV or MP3 with sample alignment
  • Speed control from 50% to 150% without changing pitch
  • Key shift up or down by up to 6 semitones without changing speed
  • BPM and key detection on acapella extractor
  • 24-bit WAV output option at 44.1 or 48 kHz on acapella extractor
  • Remove background noise, hum, fans, traffic, and room echo from speech
What makes it different
  • 6 years of development focused specifically on subtitling quality and accuracy
  • Translation workflow designed specifically for subtitles rather than generic translation
  • Preserves original audio background and ambient sounds while replacing only vocals
  • Immediate subtitle generation with optional post-editing for rapid deployment
  • Uses AI source separation instead of phase cancellation, keeping bass and drums intact
  • Automatic file deletion after 24 hours for privacy
  • Fast processing on dedicated cloud GPUs with instant preview as upload begins
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)54 no change since last check5 +3 (up) since last check
Trust Flow (Majestic)160
Citation Flow (Majestic)350
Referring domains (Majestic)5450

4 details filled in for both companies.

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