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HeyOtto vs FateMaster

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

HeyOtto compared with FateMaster
DetailHeyOtto logo HeyOttoFateMaster logo FateMaster
What it doesAI platform for kids and teens ages 8-18 with parental controls and full conversation visibility AI-powered BaZi calculator with true solar time correction and Chinese metaphysics readings
StageStartup Not given
Founded2025 Not given
Based inUS US
Pricing modelFreemium Freemium
PricingFree plan: 100 messages/month, 1 adult + 1 child account, core safety features. Pro plan: $9.99/month or $7.99/month billed yearly with unlimited messages, 500 tokens per month, advanced AI models, web search, and priority support. Additional users on Pro plan: $5/month each. Not given
Key features
  • AI Assistant for homework help and creative projects
  • Real-time content filtering and monitoring
  • Web search with cited sources
  • Learn to code feature
  • Group chat for families
  • Voice chat capability
  • Customizable family values and topic restrictions
  • Marketplace for sharing and remixing kid-created projects
  • True solar time correction with longitude and equation of time
  • Historical daylight saving time rules for 124 countries
  • Automatic detection of ambiguous and non-existent times
  • Recognition of 57 symbolic stars verified against reference charts
  • 25 chart pattern classifications including regular and advanced structures
  • Luck Pillar calculation precise to the hour and starting date
  • Support for multiple calendar systems and zi-hour conventions
  • Ten relationship types including marriage, business and family
  • Support for English, Simplified Chinese, Traditional Chinese, Japanese and Korean
  • AI-powered interpretation of charts and follow-up questions
What makes it different
  • Designed for kids ages 8-18 from the ground up, not retrofitted general AI
  • Full parent visibility and real-time conversation monitoring
  • COPPA-compliant with privacy by design and no data selling
  • Safety built into infrastructure, not added as a setting
  • AI guides students to think critically rather than just providing answers
  • Deterministic rule engine ensures identical charts from same birth data every time
  • True solar time correction standard in free charts, not just paid upgrades
  • 86 automated test cases for time handling and historical DST windows
  • Charts automatically update after algorithm upgrades without re-entry
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)28 −6 (down) since last check25 −1 (down) since last check
Trust Flow (Majestic)209
Citation Flow (Majestic)3233
Referring domains (Majestic)13077

5 details filled in for both companies.

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