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Reviu vs AI999X Labs

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

Reviu compared with AI999X Labs
DetailReviu logo Reviu AI999X Labs
What it doesThe review app for code your agent writes Not given
StageNot given Not given
FoundedNot given Not given
Based inFR Not given
Pricing modelFreemium Free
PricingFree: Local agent review, sessions, parallel worktrees, diff review with comments, local Git workflows. Pro: $9/month or $79/year (save 27%). Pro adds pull request dock, GitHub review comments, merge, and notifications. 14-day free trial. Not given
Key features
  • Native Rust GPU-accelerated desktop application
  • Agent sessions with Claude Code, Codex, Gemini, and ACP-registry agents
  • Parallel agent sessions in isolated Git worktrees
  • Inline review comments sent back to the agent
  • Real-time diff editor with inline and split views
  • Hunk-level staging, editing, and restore in the diff
  • Interactive rebase and conflict resolution
  • GitHub pull request review, checks, and merge in Reviu Pro
  • Built-in terminal
  • Keyboard-first command palette
  • 39 scientific models across mathematics, physics, chemistry, engineering, life sciences, economics and geospatial analysis
  • 3,438 capabilities with worked examples and formulas
  • Desktop app for Windows and Linux
  • Command-line interface for scripts and terminal
  • In-browser calculator on every model page
  • Python packages via pip
  • SpaceBuild for space system design with 146 products
  • MachineBuild for engineering and mechanical design with 1,042 products
  • Capability orb visualization of all 3,438 capabilities
  • No internet or account required
What makes it different
  • Review agent code before it commits with inline comments sent back to the agent
  • Fully native desktop app built with Rust and GPU acceleration, not Electron
  • Agents run locally as processes on your machine with your existing subscription
  • All local agent review and Git features remain free while Pro adds GitHub integration
  • Parallel worktrees allow multiple agents to work simultaneously without interference
  • Runs completely offline with no data sent anywhere
  • Shows all working and formulas for every calculation
  • No sign-up required or accounts needed
  • Available as desktop app, CLI, browser, and Python package
  • Models improve themselves through local research
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)9 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)60
Citation Flow (Majestic)250
Referring domains (Majestic)350

3 details filled in for both companies.

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