The read-later app Instapaper is no more available on Apple Watch.
Instapaper is the latest major app to remove Apple Watch compatibility due to low usage

Stay up-to-date on the latest Apple Watch news, and learn how to get the most out of your device with our comprehensive tutorials. From updates to features to troubleshooting tips, we’ve got you covered.
The read-later app Instapaper is no more available on Apple Watch.
Legacy Apple Watch apps built with outdated watchOS SDKs produce a warning when launched in watchOS 4.3.1. On watchOS 5 and later, legacy apps refuse to open at all.
Your Apple Watch is more than just a time piece. It’s a wonderful tool for receiving texts, checking emails, getting event alerts, and so much more when you’re on the go. And, along with all of those cool apps that let us do things with our Watch, comes a built-in feature that makes it even better; the Dock.
The Apple Watch Dock is a spot to quickly get to those apps you need and use the most. But, have you really spent time deciding which apps should go there and how they should be arranged? Here are some suggestions for making the most out of the Dock.
What easier way is there to check the weather than with a quick glance at your wrist? If you own an Apple Watch, a handy weather app is a must-have. While there’s nothing wrong with the default Weather app, sometimes you want a bit more.
These free Apple Watch weather apps give you more options to get the most out of your current conditions and weather forecasts.
Readdle, a Ukrainian developer of fine productivity software, today released a major 2.0 update to its popular Spark email client for iPhone, iPad, Mac and Apple Watch, bringing a brand new collaborative experience for teams and a host of other improvements.
Halide Camera, the premium RAW and manual shutter image-taking app by Chroma Noir LLC, was updated on App Store this morning with an all-new Apple Watch remote function, a self-timer feature, a redesigned reviewer and other perks.
Sleep Cycle is bringing snore prevention and haptic wake up features to your wrist.
Apple's first developer beta of watchOS 4.3.1 has added a warning about legacy apps.
The long-awaited Spotify app for Apple Watch could be unveiled at WWDC 2018, in June, according to an anonymous MacRumors source, who claims to be involved in the development of the app.
The app would take advantage of a new watchOS 5 framework called StreamKit, which would supposedly allow cellular Apple Watch models to stream music and receive notifications from third-party apps independently of their paired iPhone.
By default, the Dock on your Apple Watch shows your most recently used apps.
Developers can now upload and feature up to ten screenshots per device on App Store.
Popular cloud-based enterprise team collaboration service Slack has removed its Apple Watch app from the most recent update to its app on App Store.