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Heard vs Pure State Compile™

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

Heard compared with Pure State Compile™
DetailHeard logo HeardPure State Compile™ logo Pure State Compile™
What it doesThe voice layer for coding agents Deterministic English-to-Code Compiler
StageNot given Not given
FoundedNot given Not given
Based inUS US
Pricing modelFreemium Freemium
PricingFree: $0/month (open source with local voices). Pro: $12/month or $144/year (managed voices and spoken recaps). Power: $24/month or $288/year (adds voice input and iPhone companion). Every download includes a free 14-day Power trial with no card required. Not given
Key features
  • Spoken updates from Claude Code and Codex
  • Three listening modes: Co-pilot, Companion and Focus
  • Spoken recaps of agent work
  • Voice dictation with right Command key
  • Hey Parrot voice assistant
  • iPhone companion app for listening and replying
  • Follow multiple agent sessions at once
  • Open source engine with local voices
  • Works with any terminal including iTerm2 and tmux
  • Up to 2M characters of narration daily on Power plan
  • Compiles English sentences to eleven programming languages
  • Generates SHA-256 hash for each compile
  • Produces requirement-to-code traceability matrix
  • MISRA-C:2012 screening checks
  • Exports audit evidence in CSV, ReqIF and HTML formats
  • Typical compile time under 100ms
  • No third-party AI models or inference services
  • Generates ISO 26262 TCL-1 classification documents
  • Provides DO-178C tool-qualification data pack
What makes it different
  • Works without watching your screen—lets you stay informed while focused on other tasks
  • All code and transcripts stay on your Mac; nothing is used to train models
  • Listen and respond to agents from your iPhone via companion app
  • Open source engine available under Apache 2.0 license
  • Supports multiple coding agents with one interface
  • Deterministic output: same specification always produces identical bytes
  • Rule-based compiler without AI models ensures security and auditability
  • Full requirement-to-code traceability for certification
  • Eleven target languages from single English specification
  • Built-in audit evidence for safety-critical certification
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)6 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)32
Citation Flow (Majestic)3012
Referring domains (Majestic)10111

5 details filled in for both companies.

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