Regular Boomer readers might think that December is *National Mincey Calculator Review Month*. It’s not. But it should be. For whatever the reason I’ve devoted a little more time this month to updating my Mac calculator collection.

You have a Mac calculator collection, right? I haven’t done a thorough count, but I may have more calculators on my Mac than poker games on my iPhone. Earlier this year I reviewed my favorite converter app for the Mac, appropriately named Converter, and the same developer has a calculator app, appropriately named Vibrant Calculator.

My collection of calculators isn’t limited to the Mac. Some physical calculators are old enough to require paper, but it’s the digital calculators which now make up the largest portion of my personal collection. Generally speaking, Mac calculators do more and cost less. Here’s one for 99-cents.

At first glance, Vibrant Calculator looks much like any Mac calculator except it’s larger than most and seems to have the largest number of categories, constants, and functions.

The latest version added more financial functions and RPN, while previous updates added currency, illumination, magnitude, and inductance conversions, and even more units to speed, volume, length, and digital storage converters. As you would expect from any decent Mac calculator, Vibrant has basic, scientific, advanced scientific, and RPN modes available from the Menubar, plus an option for full screen mode.

What really sets Vibrant apart, though, is the extensive list of functions, conversions, and constants. The calculator list alone is remarkable. Feast your eyes on this:

- Radians and Degrees
- Decimal, Hexadecimal, Octal and Binary
- Sine
- Cosine
- Tangent
- Hyperbolic Sine
- Hyperbolic Cosine
- Hyperbolic Tangent
- Inverse Sine
- Inverse Cosine
- Inverse Tangent
- Inverse Hyperbolic Sine
- Inverse Hyperbolic Cosine
- Inverse Hyperbolic Tangent
- Secant
- Cosecant
- Cotangent
- Hyperbolic Secant
- Hyperbolic Cosecant
- Hyperbolic Cotangent
- Inverse Secant
- Inverse Cosecant
- Inverse Cotangent
- Inverse Hyperbolic Secant
- Inverse Hyperbolic Cosecant
- Inverse Hyperbolic Cotangent
- Raise x to the power of 2
- Raise x to the power of 3
- Raise x to the power of y
- Raise 2 to the power of x
- Raise 10 to the power of x
- Square toot of x
- Cubic root of x
- nth roo of y
- Base 2 Logarithm
- Base 10 Logarithm
- The natural Logarithm
- Euler’s number
- e to the power of xExponential Notation
- Factorial
- Percentage
- Random Number between 1 and 0 (Rand)
- Add Tax
- Subtract Tax
- Calculate Tax

Good grief, folks. That’s 99-cents. Here’s the list of include converters and units:

- Acceleration: 15 Units
- Angle: 11 Units
- Area: 14 Units
- Astronomical: 10 Units
- Currency: 52 Units
- Density: 9 Units
- Digital Storage: 18 Units
- Energy: 10 Units
- Force: 6 Units
- Length: 9 Units
- Illumination: 5 Units
- Inductance: 8 Units
- Magnitude: 21 Units
- Mass: 9 Units
- Power: 6 Units

Pressure: 8 Units - Speed: 22 Units
- Temperature: 5 Units
- Time: 11 Units
- Volume: 50 Units

Want more for your money? Here’s the official list of constants.

- Astronomical
- Equatorial Radius of Earth (km)
- Equatorial Radius of Sun (km)
- Mass of Earth (km)
- Mass of Sun (km)
- Mass of Moon (km)
- Mean Earth-Moon Distant (km)
- Mean Earth-Sun Distant (km)
- Mean Radius of Earth (km)
- Mean Radius of Moon (km)
- Electromagnetic
- Conductance Quantum (S)
- Elementary Charge (C)
- Magnetic Flux Quantum (Wb)
- Mathematical
- Archimedes Constant (π)
- Rulers Number (e)
- Golden Ratio (φ)
- Omega Constant (Ω)
- Pythagoras Constant (√2)
- Physical
- Speed of Light (m/s)
- Plank Constant (J/s)
- Gravitational Constant (m/kg)
- Electron Charge (C)
- Mass of Electron (kg)
- Mass of Proton (kg)
- Mass of neutron (kg)

Whew! I don’t think there’s another calculator in my collection or list of reviews which compares to Vibrant Calculator.

Other Mac calculators may offer an easier interface, but by definition a calculator with this many categories, conversions, and constants won’t be for the faint of heart. This one is a bargain price, but I promise, no more calculator reviews until next year.