When comparing SF Launcher 2 vs Z Launcher Beta, the Slant community recommends Z Launcher Beta for most people. In the question“What are the best launchers for Android?” Z Launcher Beta is ranked 7th while SF Launcher 2 is ranked 51st. The most important reason people chose Z Launcher Beta is:
Users use their finger or a stylus to write the first letter of an app they are looking for in order to find it and launch it. It allows for a fast way to find and launch apps.
Specs
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Pros
Pro Easy to use, card-based interface
The home screen is organized into cards that can be scrolled vertically. Cards can contain widgets or collections of apps. Swiping from the left gives access to all apps and swiping from the right gives access to all widgets. These can then be added to the homescreen. It's possible to customize the order, color, transparency, size and what how much information or apps a card displays.
Pro Clean, material design inspired aesthetic
The look of the launcher is inspired by Android 5.0 Lollipop and material design. It follows material design color scheme, has a card-based layout and a Google Now-like, header with a stylized image of a city at the top of the homescreen that changes throughout the day.

Pro Apps can be searched for by scribbling letters
Users use their finger or a stylus to write the first letter of an app they are looking for in order to find it and launch it. It allows for a fast way to find and launch apps.
Pro Allows searching contacts and websites directly from the launcher
By gesture writing the name of a contact or website on the home screen the launcher will show results for the user to click on to go to the corresponding contact or webpage.

Pro Keeps your most used apps at the forefront
The launcher learns what the users most used apps are and adapts what it shows on the home-screen to that usage.

Pro Simplifies your homescreen
Z Launcher is a very minimal launcher where the home screen is 4 shortcuts at the bottom, 6 of the most used apps and phone numbers on the home screen and a clock at top.

Pro Nicely designed context-aware multi-app widget on homescreen
A clean and minimal designed widget that contains info from multiple apps, letting the user scroll between them intuitively.

Pro Unread Counters for docked Apps
Having apps like Hangouts or the Phone Dialer in the docked apps will allow for unread counts on the icons.
Cons
Con Interface is not optimized for widgets that can be scrolled
Since the interface is based on vertical scrolling cards, widgets that can be scrolled (like a calendar widget) can get in the way of easily scrolling through the list of cards. It is possible to turn off widget scrolling in the settings to avoid these issues, but limits functionality of widgets.
Con A severe lack of customization options
Being that this is meant as a minimal style launcher, there is not many customization options. It is of course still in beta, so more options may wind up in the app over time.
Con Scribble feature is inconsistent
Just as with writing recognition for keyboards it is not always exact, especially depending on the users own handwriting.
