Yes,the iPhone has a built-in calculator, and so does Android.

Choosing the perfect one really depends on what you need the app to do.

Other use cases exist, too, as you’ll see throughout this list.

Photomath iPhone calculator app

It’s free for iPhone, iPad, and Android.

It gets confusing if multiple areas are mixed into one big calculator, like how some calculator apps work.

This is smart, and I’m glad it’s included.

Mathway iPhone calculator app

The only exception is that there isn’t a history of previous graphing problems.

Mathway works on the weband is free for iPad, iPhone, and Android.

Premium is as low as $3.33 /month if you pay $39.99 for the whole year.

Desmos graphing calculator app for iPhone

They don’t show up on the graph.

The app will recognize your scribbles as an eraser and instantly remove it from the equation.

There’s also a redo button.

MyScript Calculator Android app

Otherwise, if you have this option turned on, you’ll get answers midway through writing the problem.

This app is best used as a tablet or iPad calculator because the screen is so large.

I found it difficult to use on a small gear unless I limited it to short problems.

Tip Calculator iPhone calculator app

It’s $2.99 USD for Android, iPhone, and iPad.

But the Tip Calculator app makes this easy.

Just enter the loan amount, interest rate percentage, duration of the loan, and pay frequency.

Loan Calculator iPhone app

It makes adding and subtracting time as easy as any other calculation.

Subtract the 40-minute lunch you had (00:40) to get the total hour count (8 hours).

Android, iPhone, and iPad users can download this app for free.

Hours & Minutes Calculator iPhone calculator app

There’s a full version you might get to remove the ads.