When comparing Pushbullet vs Join by joaoapps, the Slant community recommends Pushbullet for most people. In the question“What is the best Android app to send SMS from computer?” Pushbullet is ranked 2nd while Join by joaoapps is ranked 5th. The most important reason people chose Pushbullet is:
Pushbullet also allows its users to push messages, links, files, locations, and more to any of their devices or to other Pushbullet users.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Does a lot more than just notifications
Pushbullet also allows its users to push messages, links, files, locations, and more to any of their devices or to other Pushbullet users.
Pro Superbly easy to use
After installing the Pushbullet application the set up process is as easy as it gets. Pushbullet will first ask you to sign in to your Google account. Then all you have to do is enable notification access and install the Chrome extension.
Pro Almost no delay
Pushbullet is just as fast as its name suggests at mirroring notifications or pushing links or files.
Pro Uses a Chrome extension for PC/Mac or a Windows application
Pushbullet is designed to use its Chrome extension although a Windows application can be used as well. The Chrome extension provides the best experience because any computer with a signed in Chrome browser will provide your Android notifications.
Pro Runs without Chrome open
As long as you enable "Keep Pushbullet running after I close Chrome" in the Pushbullet extension options, Chrome does not need to be open to receive notifications.
Pro Free
Pushbullet is free with no advertisements.
Pro Chrome notifications act as a notification drawer
Pushbullet uses Chrome notifications to act as a running list of past notification that have not yet been dismissed. This is especially useful if you receive a lot of notifications or you are not at your computer when they are received.
Pro Cross device notification mirroring
Pushbullet can even sync notifcations with other Android devices (beta). This helps prevent you from having to dismiss notifications more than once and allows you to always see your notifications no matter what device you're on.
Pro More information shown in the notification than other services
Pushbullet includes the sender's name, email address, unread count, subject, and a preview of the message all in the notification.

Pro Universal Copy/Paste
Copy text on PC,paste it on your Android device and vice versa. You need the windows app for this. iOS and OSX support coming soon.
Pro Share anything between devices
Share anything (text/clipboard, images, links, screenshots, etc.) and see everything you have recently shared from/between any of your devices.
Pro Chrome extension
Has a solid Chrome extension that has never lest me down. Easy to setup, easy to use, low on resources and VERY fast.
Pro Extremely reliable pushes on multiple devices (notifications, SMS, clipboard, and more)
Supports all of your devices and you can push anywhere, even to Mac. Text right from your computer. Receive mobile notifications on your desktop. Nice UI/UX. Talented, well-known, and trustworthy developer.
Pro Ad free and unlimited is a one time purchase as opposed to PushBullet's recurring membership fee.
I believe that Join is $4.99 for the pro account, but it used to be donation based starting at $0.99. When I go to the options for upgrade in the app, it still shows a donation based payment option. that could be becasue I am alegacy user or maybe the $4.99 is just a recommended amount.
Pro Locate your device
Another nice feature is the ability to locate all of your Join connected devices remotely (similar to Lookout or Google's Find My Device).
Pro Integrates with Tasker
Integrates with Tasker for all sorts of crazy cool actions and options.
Pro Encryption
Ability to encrypt your pushes between devices.
Pro Push files and they are stored in Google Drive
Any files you push are stored in your own Google Drive so you always have access to them
Pro Supports ringing the phone
Misplaced your phone somewhere? Have Join ring your phone at it's loudest volume and find it.
Pro Universal Copy & Paste
Copy to clipboard on one device and paste it on another.
Cons

Con Mac users must use their browser
There is currently no desktop application for Mac users available. The Pushbullet website claims a native OSX client is "coming soon".
Con Complex settings
Con No Firefox addons
Developer is unable to create addons because of restriction in Firefox API.
Con No iOS version, yet
According to the developer's Google Plus page, an iOS version is being developed. But nothing as of yet (December 2017).
