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SellTo.us vs Helix

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

SellTo.us compared with Helix
DetailSellTo.us logo SellTo.usHelix logo Helix
What it doesAI-simulated audience testing for startup ideas, apps, products and ads The founder studio that runs long after launch
StageNot given Startup
FoundedNot given Not given
Based inNot given AE
Pricing modelFreemium Freemium
PricingIdea Snapshot: Free (100 participants). Quick Check: $19 USD one-time (1,000 participants). Pick the Winner: $49 USD one-time (10,000 participants). Launch Plan: $149 USD one-time (100,000 participants). Free: 10,000 credits one time, 500 MB storage, Haiku & Sonnet models, core canvas features, 5 AI conversations per day. Starter: $16/mo, 25,000 credits/mo, 5 GB storage, all AI models, API & MCP access, basic analytics, custom PDF exports. Professional: $39/mo, 75,000 credits/mo, 25 GB storage, ever
Key features
  • Test ideas on up to 100,000 AI-simulated participants
  • Compare up to 5 versions and 5 images
  • Results by city for launch planning
  • Ad targeting guide with platform-specific instructions
  • Customizable audience groups with up to 10 demographics
  • Validation experiments and next-step checklist
  • Detailed PDF reports with decision briefs
  • Re-test improved versions on same simulated crowd
  • Photo testing and image voting
  • Free invite rewards: get free Quick Check when friends make first purchase
  • Integration with existing tools (marketing, analytics, community, development platforms)
  • AI-powered research and planning
  • Unified canvas for plans, docs, metrics, and decisions
  • MCP server integration with Claude, Cursor, Windsurf
  • API and MCP access
  • Scheduled syncs
  • Multiple AI model support (Claude, GPT, Haiku, Sonnet)
  • Custom PDF exports
  • Credit rollover capability
What makes it different
  • Structured AI testing unlike chatbots: fixed crowd of individual profiles for your audience, every one answers each version, results counted by code
  • No subscription: one-time purchases that don't expire while account is open
  • Free first test with 100 AI-simulated participants
  • Results by audience group, not just aggregate numbers
  • Complete transparency: every number labeled as simulated, methodology fully explained
  • Runs continuously after launch, not just at planning stage
  • Integrated canvas connects all business tools and data in one view
  • AI actively participates in building alongside you
  • Credits-based pricing scales with how far your business runs
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check5 no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)1713
Referring domains (Majestic)48

5 details filled in for both companies.

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