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Checksub vs RapZap

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 RapZap
Detail ChecksubRapZap logo RapZap
What it doesAI-powered subtitle and dubbing generator for video and audio content localization AI rap video generator that turns photos into performance clips
StageEstablished Startup
FoundedNot given 2026
Based inNot given Not given
Pricing modelFreemium Paid
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 $8.99 per video (one-time payment, no subscription)
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
  • Five fixed templates: Hotel Lobby, Bulin 47, Zombie Couple, Rumpelstiltskin, Tiny Desk
  • Lip-sync animation matched to trend audio
  • Upload one to five photos per video
  • 720p MP4 download
  • 7-day download window for finished videos
  • Automatic credit return on failed renders
  • Photos deleted within 24 hours
  • Private video links per browser session
  • Video aspect ratios match platform feeds
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
  • Fixed templates with no prompt required, unlike general video models
  • One flat price of $8.99 per video with credits returned on failure
  • Lip-sync timed to trend sounds for better mouth matching than generic models
  • No subscription, no account, no card data stored by RapZap
  • Videos framed for specific platforms and ready to post
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 check3 no change since last check
Trust Flow (Majestic)165
Citation Flow (Majestic)3523
Referring domains (Majestic)54518

6 details filled in for both companies.

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