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Apps That
Went Free on
2021-11-29

Quickly and accurately calculate air density and altitude, slide puzzle pieces together to complete the image, and develop better habits with today’s collection of apps and games.

AirLab: Air Density & Altitude
iPhone
iPad
AirLab: Air Density & Altitude

AirLab: Air Density & Altitude

Siarhei Raichonak

Quickly and accurately calculate air density and altitude with AirLab.

Pilots, drag racers, or mechanics.

$2.99 $2.99
Why we picked this?

AirLab is a very useful tool for tuners and aviators. The app is integrated with OpenWeatherMap, MET Meteorologisk Institute, Amazon weather data, GPS, and your device’s onboard barometer to give accurate calculations. AirLab provides air density, density altitude, relative air density, dew point, station pressure, saturation vapor pressure, oxygen pressure, and much much more. It works without cellular connection or barometer. You can even get weather via Bluetooth using weather stations.

You need to know air density or density altitude of a position.

You have no use for this type of data.

TYPEE Pro: Grid & Story Maker
iPhone
iPad
TYPEE Pro: Grid & Story Maker

TYPEE Pro: Grid & Story Maker

YiChing Kuo

Create all your stories in one place with TYPEE Pro.

Social media butterflies.

$14.99 $14.99
Why we picked this?

TYPEE Pro is an all-in-one photo editor for sharing stories on social media. The app is straightforward and easy to use. It offers custom fonts, filters, effects, signature board, and even a QR code stamp. You can save all creations directly to your camera roll or share on any social media platform.

You enjoy sharing photos on social media.

You aren’t active on social media.

bProgress - Manage Daily Tasks
iPhone
bProgress - Manage Daily Tasks

bProgress - Manage Daily Tasks

碧成 黄

Manage your busy life with bProgress.

Those with a lot going on.

$0.99 $0.99
Why we picked this?

bProgress is a lightweight productivity tool that combines progress management with schedule planning. Set your daily tasks or plans in the calendar and filter by priority. The app uses the four-quadrant rule for time management. It supports iCloud data backup and data synchronization across multiple devices.

You want to develop better habits.

You already have a trusty todo app.

Zenge
iPhone
iPad
Zenge

Zenge

Michal Pawlowski

Slide puzzle pieces together to complete the image in Zenge.

Prefer stress-free gameplay.

$1.99 $1.99
Why we picked this?

Zenge is void of points, timers, tutorials, move counters, and rating systems. They’re just a distraction from the art and sound. The idea is to slide puzzle pieces together in order to complete the image. The only thing stopping you are the puzzle pieces themselves since they can block each other out if put into place too soon. Take your time. Relax. Enjoy.

You want to just kick up your feet and put some puzzles together.

You require competitive elements.

Scalak
iPhone
iPad
Scalak

Scalak

Michal Pawlowski

Fill up the figures in this methodical puzzle game.

Fans of puzzle games.

$1.99 $1.99
Why we picked this?

Scalak is a 3D puzzle game with all types of shapes and pieces to put together. There are over 90 levels included of varying set-ups that are like 3D jigsaw puzzles. Just sit back, relax, and tap into your logical thinking.

You enjoy games like PUSH, Zenge, or Art Of Gravity. Scalak is made by the same developer.

You prefer action games.