There are two scenarios you might run into that require reinstalling the Simplifeye Watch app.
When you update the Simplifeye app on the iPhone, the Apple Watch app may fail to update. This is a known device issue, and unfortunately one that Simplifeye has no control over.
Occasionally the Watch app has been known to freeze on a Loading screen. If the app remains stuck even when you refresh the iPhone, reinstalling may be your best option.
Fortunately, reinstalling the Watch app is relatively simple and painless. Just follow these step