Here are some of my favourite (Android) apps (some might also be available on iOS):

SwiftKey

SwiftKey is the best swipe keyboard from Microsoft. The keyboard learns your writing style, so you can type faster. Use your custom keyboard to type and send emoji, GIFs and more.

Beautiful Widgets

Beautiful Widgets is your best companion when personalizing your home screen with widgets.
Be unique, express yourself.

Tapatalk

Tapatalk is the mobile home to over 200,000 online forums worldwide. On Tapatalk, you will be interacting with like-minded individuals to develop meaningful conversations on the topics that interest you. You’ll never have to wait until you get home to upload the fun images to your favorite forums. Instant push notifications will allow you to never miss out on any topics update.

BBC Weather

Wherever you are, and whatever your plans, you’re always prepared with the latest weather forecast from BBC Weather. Now even easier to understand, with more locations and more hourly information.

AVG Antivirus

Get AVG AntiVirus FREE for Android 2019 to help protect you from harmful viruses and malware. Keep your personal data safe with App Lock, Photo Vault, Wi-Fi Security Scan, and App Permissions advisor.

TomTom Go

Your red carpet for the road, no matter the destination. Whether you’re a commuter or a scenic driver TomTom GO Mobile makes you feel like you’re in the priority lane.

IFTTT

Applets bring your favorite services together to create new experiences.

Over 600 apps work with IFTTT including Twitter, Telegram, Google Drive, Twitch, Weather Underground, Instagram, Gmail, and devices like Google Home, Amazon Alexa, Nest, Philips Hue, and your Android.