Are we alone? Where is everybody?
More than a Drake Equation calculator, DrakeEQ (v6.0.0) provides a simulation of the extraterrestrial question. Use this fun simulator to graphically quantify the number of advanced extraterrestrial civilizations in our Milky Way Galaxy.

Are we alone?: DrakeEQ computes/displays civilization count and draws them to the display.

Where is everybody?: DrakeEQ approaches the Fermi Paradox by positioning the civilizations in 3D space and computing the average distances between them.

At nearly 8 years running, DrakeEQ is also one of the longest continuously supported apps on the entire App Store! DrakeEQ is both educational and entertaining.

Image: “Milky Way Bar” Courtesy NASA/JPL-Caltech/R. Hurt (SSC)
The Drake Equation primarily allows scientists to quantify the uncertainty of the factors which determine the number of “intelligent” extraterrestrial civilizations contained in our galaxy.


The Drake Equation states that:
N = R* X fp X ne X fℓ X fi X fc X L

Learn about the famous Drake Equation through direct manipulation of its 7 parameters with DrakeEQ. Easily tweak equation variables using fun drop-down manipulators.

  • Enter direct parameter values with keyboard or step through values
  • Average distance between civilizations calculator
  • Tunable precision
  • Highlight the solar system
  • Change star system colors
  • Tweet results
  • Activate the quasar from Sagittarius A*
  • Galaxy in motion
  • Distance between civilizations
    • Tweet and email results
    • Multiple viewing angles
    • Solar system locator

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Get it today on the App Store for 0.99 USD!
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N = R* X fp X ne X f X fi X fc X L

N: number of civilizations in our galaxy with which communication is possible
R*: yearly average of star formation
fp: fraction of those stars that have orbiting planets.
ne: average number of planets (or moons) that can support life per star with planets
fl: fraction of above that actually proceed to develop life
fi: fraction of above that actually proceed to develop intelligent life
fc: fraction of civilizations that are able to transmit signals into space
L: length of time in years that civilizations are able to transmit signals into space

Are we alone? Take a guess with DrakeEQ and the Drake Equation!