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TrustTheCalcs vs Natal Chart Lab

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

TrustTheCalcs compared with Natal Chart Lab
DetailTrustTheCalcs logo TrustTheCalcsNatal Chart Lab logo Natal Chart Lab
What it doesConstruction calculators that show their math Free astrology calculators with published methods and astronomical accuracy
StageNot given Not given
FoundedNot given Not given
Based inNot given SG
Pricing modelFree Free
PricingNot given Not given
Key features
  • Every constant cited to ASTM, CMHA, or datasheet
  • Two calculation methods shown separately
  • Free and private, no account required
  • Calculate Chiron sign and degree from birth date
  • Optional birth time to determine Chiron house
  • Exact Chiron return dates
  • NASA JPL Horizons ephemeris data
  • Chiron retrograde calendar
  • Birth date range 1900 to 2100
  • Chiron sign interpretations
  • Historical timezone accounting
  • Published methodology and accuracy verification
What makes it different
  • Every constant traced to named source and shown next to result
  • Shows both methods when they disagree instead of averaging them
  • Solves massive discrepancy in published block fill volumes
  • Calculations run in browser with no data storage
  • Built on version-controlled, auditable reference data modules
  • Uses NASA JPL Horizons data verified to within a fraction of an arcsecond
  • Open source code and ephemeris data on GitHub
  • No account required and birth details not stored
  • Transparent about calculation methods and limitations
  • Handles uncertain birth times with clear flagging
Community votes00
DR (Domain Rating by Ahrefs)8 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)50
Citation Flow (Majestic)2216
Referring domains (Majestic)72

4 details filled in for both companies.

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