When comparing Z Launcher Beta vs Themer: Launcher, HD Wallpaper, 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 Themer: Launcher, HD Wallpaper is ranked 33rd. 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 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.
Pro Offers a wide variety of themes to choose from
Once Themer is installed it will direct the user to a theme library with hundreds of unique themes that can then be set up with a single click.
Pro Provides a way to create a completely unique homescreen
Themer includes a powerful theme editor that allows creating unique homescreens. It includes a collection of highly customizable widgets as well as custom icons and wallpapers that can be used to customize the homescreen in a wide variety of ways. It of course also allows using any other third-party components.
Homescreen customizations including settings and various components can be bundled as shareable themes by exporting them as zip files.
Cons
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.
Con Drains battery quickly and uses up a lot of resources
Themer is not yet well optimized. It will considerably reduce how long the battery lasts and requires a a mid to high end phone to run smoothly.
Con Lots of poor quality themes
Majority of themes lack animations, tend to stutter or have clunky functionality.
