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Sirro vs Heard

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

Sirro compared with Heard
DetailSirro logo SirroHeard logo Heard
What it doesSave assets once. Reuse in every project. The voice layer for coding agents
StageMVP Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
PricingFree: 10 saved assets, 1 MB storage. Pro: $19/month for 150 saved assets, 10 MB storage. Team: $49/month for up to 4 members, 500 shared assets, 30 MB shared storage. Free: $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.
Key features
  • External memory for AI coding agents
  • Team shared libraries across projects
  • MCP server integration with Cursor, Claude Code, Codex, and more
  • Save and retrieve assets by name
  • Collaboration across agents and repositories
  • Versioned searchable asset storage
  • Automatic versioning when you save
  • Organize library with tags
  • 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
What makes it different
  • Reduces token costs by fetching existing assets instead of regenerating them
  • Eliminates copy-paste archaeology with named asset retrieval
  • Lives outside individual projects and repositories for cross-project reuse
  • Works with multiple AI coding tools through single MCP connection
  • 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
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)3 no change since last check6 −1 (down) since last check
Trust Flow (Majestic)203
Citation Flow (Majestic)2030
Referring domains (Majestic)15101

5 details filled in for both companies.

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