HeyDeer vs MySpec

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

HeyDeer compared with MySpec
Detail	HeyDeer	MySpec
What it does	AI code reviews and fixes for GitHub pull requests	AI Senior Architect for Spec-Driven Development that generates 4-file spec bundles before you write code
Stage	Not given	MVP
Founded	Not given	Not given
Based in	SG	SG
Pricing model	Freemium	Freemium
Pricing	Free: 1,000 credits first month, 300 monthly after; Starter: $9/month with 2,500 monthly credits; Pro: $39/month with 12,000 monthly credits. No seat fees. Add-on credits start at $5 for 500 credits at base rate of $10 per 1,000 credits, with volume discounts. Reviews of public repositories free up	Free: 20 projects, 100 spec files, 20 public share links per month. Pro: 5× AI usage limit, 100 projects, unlimited specs. Team: 10× AI usage limit per seat (2 seats minimum), unlimited projects and specs.
Key features	Independent review model that checks all pull requests uniformly regardless of authorship Dual model verification to reduce false positives Autopilot for automated fixing and iteration Review walkthrough showing what to read first and what to skim Support for team standards via REVIEW.md and AGENTS.md Configurable feedback scope (Concise, Balanced, Detailed) Standard and Deep review depths for different complexity levels MCP servers for additional review context Works with public and private repositories @heydeer mention for questions and task handoff	4-file spec bundle generation (constitution, requirements, solution, tasks) Structured interview to clarify scope and edge cases Live Mermaid diagram rendering ZIP export of spec bundle MCP Server integration for IDE agents Greenfield and Brownfield workflow support EARS+ acceptance criteria format Versioned diffs for spec refinement Team collaboration and shared projects Plain-English edits in chat
What makes it different	Finds 78% more issues than GitHub Copilot on the same pull requests No seat fees regardless of team size or number of repositories Independent and uniform review across all code sources and models Automated fixing with Autopilot until PR is ready to merge Free reviews for open source projects up to fair-use limit	Replaces vague prompts with immutable 4-file architectural contracts to prevent AI hallucinations Senior Architect interview catches edge cases before coding begins Supports both Greenfield and Brownfield project workflows
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	22 no change since last check
Trust Flow (Majestic)	1	11
Citation Flow (Majestic)	31	27
Referring domains (Majestic)	13	100

6 details filled in for both companies.

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