Developer Tools
Left Inverse
Last updated 2026-07-30 · benchmark measured 2026-07-30 — deterministic & reproducible
Phantom Voice is a one-time-purchase local dictation app for macOS developers.
Overall production-readiness score — reserved
Legit.Show benchmarked Left Inverse across all seven frames. The single overall score is shown to the verified maker; the frame-by-frame breakdown is public below.
Is Left Inverse production-ready?
Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Left Inverse (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Security. The per-frame breakdown is public on the Legit.Show listing; the single overall production-readiness score is reserved for the verified maker.
The 7 Frames
- Performance — 89/100
- Accessibility — 100/100
- Security — 45/100
- Privacy — 100/100
- Reliability — 100/100
- Standards — 92/100
- Discoverability — 75/100
What we measured
- Security headers present: HSTS.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 144 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who built it
Willis Liao
Who it's for
Developers · macOS users · Code writers
Pricing
$10 one-time purchase; optional add-on indicators at $3 each (Retro Dog, Real Revolver, Piano Keys)