Touch Bar is a wonderful feature on the new MacBook Pro. Something we’d love to have on future Macs.

Here is Magic Number’s Touch Bar. (Full image here.)

It is fully customizable.
Menu ▸ View ▸ Customize Touch Bar…

Instead of menu, you can also tap

Within minutes, you have a business calculator:

Or a specialized time calculator:

You get the idea.

Let’s look at the special buttons.

Special Buttons

Trigonometry

You may be wondering where are the inverse and hyperbolic functions.
When you tap sin for example, all is revealed:

If you don’t use hyperbolic functions, there is also a quicker way.
Check out Menu ▸ View ▸ Touch Bar Options ▸ Use Double Key

Angle Unit

On the surface, this button switches between degrees and radians.

When you tap and hold, you get contextual options.

In radians, you can see your result in terms of pi or tau.

Memories

Initially you have 2 memories for the Touch Bar. You can get more:

Format

This expands into 2 parts.
Part B is quite smart — it examines the context and brings you the relevant options.

A Number formats

They are general, decimal places, scientific, and fraction.
For engineering, quantifier, and significant digits, tap

B Contextual control

Sometimes, depending on the context of your calculation and format, you want to look at results differently. Previously you had to dig deep, now it’s one tap away.

Here are the scenarios:

This applies to any scenario.

Precision control

For any calculation, you can decrease or increase the precision.
You can also show or hide the separator.

Result is an angle in degrees.

Degree control

You can see your result in degrees, minutes, and seconds.
Note the icon with 2 dots on the right. Tap it to switch control.

Result is an angle in radians.

Radian control

Make sense of radians by seeing it as a factor of π.
To see it in terms of revolution, select ‘× τ’. (τ = 2π = 1 revolution)

Result is a complex number.

Complex number control

Switch between rectangular and polar formats effortlessly.
(Without the Touch Bar, you need to know ⌥⌘P.)

When using Quantifier format.

Quantifier control

Press ⟨⟨⟨ to see 1 billion as 1000 million. Or press ⟩⟩⟩ for trillion.
Engineering wise, this is shifting the exponent from 10⁹ to 10⁶.

Transform

This one is good to know. It transforms a number from one form to another.

Sign Transform
e.g. 2 → -2

Inverse Transform
e.g. 2 → 2⁻¹ = ½ = 0.5
Also: cosine → secant

Percent Transform
e.g. 0.5 → 50%

Time Transform
e.g. 2.5 → 2:30

For your reference, their shortcuts are ⌘–, ⌘', ⌘%, and ⌘:

Themes

The default Touch Bar is monochrome.

If you want a colorful, vibrant Touch Bar, go to View ▸ Touch Bar Options and choose the Vibrant theme.