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SwiftSkills vs TestFlows Machine

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

SwiftSkills compared with TestFlows Machine
DetailSwiftSkills logo SwiftSkillsTestFlows Machine logo TestFlows Machine
What it doesDirectory of AI agent skills, MCP servers and rules for iOS, Swift and SwiftUI development Run your programs deterministically. Record, replay, and branch your runs.
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: €0 with ₡3 credits included each month (about 20 vCPU-hours). Starter: €10/month with ₡25 credits (about 166 vCPU-hours). Plus: €25/month with ₡65 credits (about 433 vCPU-hours). Pro: €50/month with ₡150 credits (about 1,000 vCPU-hours). Dedicated: contact sales. Usage credits: €1 a credit, pu
Key features
  • 137 catalog entries with public source links
  • 48 MCP servers for Apple development
  • Support for multiple AI agents including Claude Code, Cursor and Codex
  • 11 categories organized by development areas
  • Install commands copied from official sources
  • Searchable catalog with keyword filtering
  • Weekly newsletter of new catalog entries
  • Record runs with non-deterministic inputs pinned down
  • Replay runs instruction-by-instruction
  • Checkpoint and fork from any point
  • Fault injection for disk, network, clock, containers and system calls
  • Built-in debugger for machine programs
  • Machine client and Python SDK
  • Cloud storage for runs and disk images
  • Multiple simultaneous sessions with configurable vCPUs
  • Configurable session disk up to 256G
What makes it different
  • Curated specifically for Apple platform developers
  • All entries linked to public repositories with verified sources
  • Includes diverse tool types: skills, MCP servers, rules, docs and SDKs
  • Deterministic replay of program runs with identical outcomes
  • Fork and branch from any point without losing original timeline
  • Comprehensive fault injection testing built-in
  • Pay-as-you-go usage credits with free plan available
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)1 +1 (up) since last check2 no change since last check
Trust Flow (Majestic)04
Citation Flow (Majestic)1321
Referring domains (Majestic)127

4 details filled in for both companies.

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