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Apps That
Went Free on
2019-08-26

Calculate from your keyboard, perform complex linear algebra calculations, and relax to the sounds of the world with today’s collection of apps.

Sleep Sounds: relaxing sounds
iPhone
iPad
Sleep Sounds: relaxing sounds

Sleep Sounds: relaxing sounds

Dmitriy Pushkarev

Drift off to the sounds of the world around you with Sleep Sounds.

Anyone who needs a distraction.

$1.99 $1.99
Why we picked this?

Sleep Sounds allows you to browse through its collection of more than 50 looped sounds with a swipe. To save on storage space, the sounds need to be downloaded one by one. You can mark your favorites with a tap for quick access later on. The app also includes a sleep timer and an alarm.

You simply need a way to block out the world.

You’re picky. The sounds can’t be expanded upon and they can’t be mixed.

Matrix Numerics
iPhone
iPad
Matrix Numerics

Matrix Numerics

Matrix Numerics LLC

Perform complex calculations with Matrix Numerics.

Scientists, students, and anyone else involved in mathematics.

$0.99 $0.99
Why we picked this?

Matrix Numerics is a powerful linear algebra app with a straightforward interface. It allows you to add, subtract, and multiply matrices, calculate results involving vectors, solve linear systems of equations, and so much more. Matrix Numerics includes a tutorial in order to ensure you’re able to take advantage of all it has to offer.

You deal with linear algebra.

You have no idea what linear algebra is.

Calcvier - Keyboard Calculator
iPhone
iPad
Calcvier - Keyboard Calculator

Calcvier - Keyboard Calculator

Sergei Shpygar

Calculate from your keyboard with Calcvier.

Anyone who wants convenient access to a calculator.

$2.99 $2.99
Why we picked this?

The days of switching between apps to calculate are over. Calcvier puts a calculator right into your keyboard. It includes all basic operations as well as the ability to save expressions. A dark theme is available as well.

You frequently perform basic calculations.

You need a full-fledged solution.