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Lacuna vs tday

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

Lacuna compared with tday
DetailLacuna logo Lacunatday logo tday
What it doesAI song generator that turns ideas or lyrics into complete songs with vocals, then lets you remix, extend, split stems, and master on one canvas Narrated product demos recorded by your coding agent
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
PricingFree: 120 credits per month, no card required. Basic: $114/year (or $9.50/month), 2,500 monthly credits. Pro: $294/year (or $24.50/month), 7,500 monthly credits, includes downloadable license PDF. Ultra: $594/year (or $49.50/month), 25,000 monthly credits, includes downloadable license PDF and unlim Not given
Key features
  • Generate complete songs with AI vocals, lyrics, melody, and instrumentation in any genre
  • Multiple AI models: Aether (wide styles), Reverie (lyrics sung exactly as written), Echo (structured songs), Cadence (melody-based)
  • Remix, extend, and rewrite specific sections while keeping lyrics time-aligned
  • Split tracks into 2, 4, or 6 stems (vocals, drums, bass, instruments)
  • AI mastering on the same canvas with reference sound matching
  • Train and use your own singing voice on new songs or swap onto existing tracks
  • Hum a melody or upload MIDI file to build a full song around it
  • Add instrumentation to a vocal or vocals to a beat
  • Support for 10+ vocal languages with Reverie model
  • Commercial license included on all paid plans; Pro and Ultra include downloadable license certificate
  • Records web apps, desktop apps, terminal tools, iOS and Android apps
  • Works with Claude Code, Cursor, Codex and any MCP client
  • AI-written narration with multiple voice options
  • Automatic captions, cursor zoom, callouts and key caps
  • Video editor with trim, cut, speed and zoom controls
  • Embed demos in documentation and share via links
  • Social media posting with platform-specific captions
  • Automatic outdated demo detection for Pro and above
  • Custom branding with logo, colors and fonts
  • Teleprompter for recording your own narration
What makes it different
  • Can edit specific sections on the waveform without regenerating the entire song
  • Available in 9 languages for global audience
  • Works for producers, songwriters, content creators, and independent artists without requiring music knowledge
  • Records demos with your coding agent entirely on your machine with no script or manual recording needed
  • Demos automatically update when your product changes using AI-powered version control
  • Automatic docs integration for Mintlify and GitBook on Growth plan
  • Free plan with 5 demos and no credit card required
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)30 +1 (up) since last check24 no change since last check
Trust Flow (Majestic)153
Citation Flow (Majestic)3532
Referring domains (Majestic)19170

4 details filled in for both companies.

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