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MySpec vs Diffsift

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

MySpec compared with Diffsift
DetailMySpec logo MySpecDiffsift logo Diffsift
What it doesAI Senior Architect for Spec-Driven Development that generates 4-file spec bundles before you write code AI code review that runs locally on your machine
StageMVP Not given
FoundedNot given Not given
Based inSG GB
Pricing modelFreemium Paid
PricingFree: 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. Personal: $59 (one-time). Team: $119 per seat (minimum 2 seats, one-time). Renewal: 50% of original price ($29 personal / $59 per team seat) for 12 months of updates.
Key features
  • 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
  • Proactive review inbox with Windows notifications
  • Multi-pass review for large PRs
  • Evidence-linked findings
  • Review profiles for different focus areas
  • Review history stored locally
  • Supports local and external model providers
  • Azure DevOps and GitHub integration
  • Encrypted credential storage
  • Offline license activation
What makes it different
  • 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
  • No code leaves your machine by default with local models
  • One-time purchase with perpetual fallback license
  • First-class Azure DevOps support
  • No telemetry or vendor lock-in
  • Tested with real models at actual performance speeds
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)22 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)110
Citation Flow (Majestic)2714
Referring domains (Majestic)1002

6 details filled in for both companies.

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