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Helicon vs RetroFill

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

Helicon compared with RetroFill
DetailHelicon logo HeliconRetroFill logo RetroFill
What it doesFree, open-source desktop and web app for Meta's Muse Code CLI Fill your GitHub contribution graph with real, backdated commits
StageNot given Not given
FoundedNot given Not given
Based inIN CA
Pricing modelOpen source Freemium
PricingFree, MIT licensed, no paid tier, no trial, no seats, no account. Runs on your existing Muse Code subscription. Free: preview and first fill up to 7 days and 20 commits. Coffee: $5 USD one-time for one 365-day window. Time Machine: $12 USD one-time for every year since you joined. Autopilot: $3.99 USD per month or $29 USD per year for streak insurance with automatic commits on missed days.
Key features
  • Projects and sessions grouped by working directory and git worktrees
  • Resume sessions including those started in the terminal TUI
  • Inline diffs in the thread at the turn that produced them
  • Every agent approval surfaced and never bypassed
  • Cost tracking at published API rates per thread
  • Full keyboard navigation with command palette
  • File viewer with source, Markdown, image, video and PDF preview
  • Remote daemon support for running the agent on another machine
  • VS Code extension available
  • Native Windows support with PowerShell
  • Live preview on your real graph with no sign-in required
  • Realism engine with six personas and seeded rerolls
  • Manual painting with brushes 1–4
  • Gap-only mode to respect existing contributions
  • Text and pixel art mode on Time Machine and Autopilot
  • One-click undo that deletes the generated repository
  • Private repository support on Time Machine and Autopilot
  • Contribution Doctor preflight checks
  • Autopilot streak insurance with configurable commit frequency
  • Multi-repo spread up to three repositories on Time Machine and Autopilot
What makes it different
  • No additional cost or billing on top of existing Muse Code subscription
  • Credentials stay with the muse CLI, never stored by Helicon
  • Native Windows support without requiring WSL
  • MIT licensed open-source with no company behind it
  • Sessions and approvals never bypassed or batched
  • Real, inspectable commits with no hidden activity
  • Realistic patterns based on developer behavior modeling
  • Preview before payment on your real GitHub graph
  • Complete undo in one click with automatic account restoration
  • Timezone-aware commits with proper timestamp handling
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)11 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)140
Citation Flow (Majestic)2713
Referring domains (Majestic)341

6 details filled in for both companies.

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