Spark makes it easy to work through your inbox faster than ever before. No matter if it's one new message or hundreds, you can do it in a couple of minutes.

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.

“The best calendar app for iPhone.” - The Verge

Check order statuses, receive updates, check into Genius Bar appointments, view workshops and events, and other store info.

Forget text messages for two-factor authentication, because now you can receive codes on your Apple Watch.

The Weather Channel's detailed and accurate information is now optimized for Apple Watch.

addappt is a free app on iOS, Apple Watch and Android that enables friends to keep each other's contact information up-to-date and message each other with one 'tapp'.

Build a shopping list on your Apple Watch, and when you’re in the store, the app tells you where to find all of the items you need.

Keynote is the most powerful presentation app ever designed for a mobile device.

Knock and Apple Watch: a match made in heaven. Knock 2.0 makes unlocking your Mac faster and more secure than ever.

Once you buy your movie tickets, easily view your countdown-to-showtime clock or directions to the theater and have your ticket scanned directly from your wrist.

Now you can check up on your timers, use your shopping list, and even browse recipes right from your wrist.

Tracking calories works! Join the millions who have lost weight with LIVESTRONG.COMs MyPlate Calorie Tracker the most user-friendly way to track your calories on your iPhone, iPad, and Apple Watch. LIVESTRONG.COM makes tracking calories EASY!

Play a N-E-A-T word puzzle right on your Apple Watch with Letterpad, from the makers of Tiny Tower and Nimble Quest.

Control the playback of your podcasts right from your wrist with Pod Wrangler for Apple Watch.

Lose It! is "weight loss that fits" — even around your wrist with its official extension for the Apple Watch.

Organize your travel plans in one place with TripIt from Concur.

Remotely control your Microsoft PowerPoint presentation on your iPhone using your Apple Watch.

Get scoring notifications, breaking news, and read articles with the ESPN app for your Apple Watch. You can now get all of the up-to-the-minute sports details you need no matter where you are with just a glance.

Dice with Buddies is now on your Apple Watch. Get alerts for turns waiting, see what your opponent rolled and check your chats!

Twitterrific, the seminal third-party Twitter client app for iPhone, officially supports the Apple Watch. With its Apple Watch companion app, you can track your Twitter stats, receive notifications, manage your followers, and even post new tweets.

Day One for Apple Watch lets you check into a location, dictate a journal entry, and view your last photo taken. You can also view recent entries and use a customizable quick-entry to set tags and activity data.

A recipe recommendation feed, personalized just for you -and- on your wrist

Strava makes fitness tracking social. We house your entire active journey in one spot – and you get to share it with friends. Here’s how: