Screen Lock

A third party lock screen

Holo Locker

Lock screen app based on Jelly Bean's lock screen

Screen Lock: Time Password

Block access to your mobile or to applications and files

BitBible

Read one Bible verse every time you turn on your phone

Fronto

Earn money each time you unlock your smartphone's screen

Clasp

Unlock your mobile screen with a zipper

PIP Lock Screen

The most customizable lock screen

Omni Cleaner

Simple and powerful cleaner for Android devices

Always On AMOLED

Keep the screen always on thanks to AMOLED technology

Door Lock Screen

Turn your lock screen into a stylish door

Lock Screen & Notifications iOS 14

Customize your Android with an iOS 14 look

MiLocker

MIUI-style lock screen

Next Lock Screen

Microsoft's lock screen for Android

Start

Quick access from your lock screen

AOA: Always on Display

A tool kit for your lock screen

WidgetLocker

The most complete lock screen app

Memrise

Learn languages with a revolutionary method

busuu

Interactive exercises and quizzes to learn many languages

Du Chinese

A pocket-sized tool for learning and translating Mandarin Chinese

Babbel

Learn languages with your mobile phone in an entertaining way

Duolingo ABC

An English course for kids

Pleco

A great resource for students of Chinese

Lingokids Chinese for Kids

Learn Chinese from your smartphone

Duolingo

An app to learn languages, maths, and music with your cell phone

Rosetta Stone

App for learning a range of languages

HelloTalk

Practice languages with native speakers

HiNative

Learn languages with the help of native speakers

Tandem

Learn to speak other languages by means of conversation exchanges

DW Learn German

Free German course adapted to all levels

Mondly

Alternative to Duolingo learn languages

LOLA SPEAK

Learn English by talking