Rainpaper
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Screenshots
Introduction
Rainpaper is a desktop wallpaper app for Android devices that focuses on simulating raindrops, making your phone screen look like it's really raining. The app also offers various other weather conditions to choose from. Users can customize the color, size, and frequency of the raindrops. Multiple environmental effects await exploration. Furthermore, the app is extremely easy to use, allowing users to easily obtain beautiful rain-themed wallpapers.
Features:
Realistic simulated rain on glass! Not a low-quality looping video like other rain wallpaper apps
Weather effects such as fog, rain, wind speed, storminess, and snowfall are all fully configurable to your liking
Parallax scrolling
Local weather synchronization
Easily add and remove subreddits to customize your background sources, or use any locally stored images for your background
Customize rain color, droplet size, and rain frequency
Beta feature: Video wallpaper support (.MP4)

Highlights:
CREATE BEAUTIFUL RAIN-THEMED WALLPAPERS
A convincing recreation of drops of rain falling on the screen, and they are unique and authentic, without the looping effects, as everything is random and lively! This app does not simply play a low-quality video that loops, unlike others that feature a rain-themed background. Besides, you can adjust the rain's duration, severity, and appearance to meet your requirements to make the screen vivid and captivating as you stare at it. The rain intensity adjustment also gives you more ideas to make everything more captivating with some touches.
ADD MORE EFFECTS FOR AUTHENTIC TRAIN-THEMED BACKGROUNDS
The app will not have any limitations on changing the backgrounds to anything you prefer, and it will have in-depth customization for everything. You can change the weather however you see fit, including the amount of fog, rain, wind speed, storminess, and snowfall that occurs. Regionalization of weather forecasting and coordination efforts is also an option, and you can make everything realistic as the screen reacts to local weather. That gives you more ideas to customize the wallpaper with beautiful rain themes.
LINK UP WITH DIFFERENT BACKGROUNDS
Changing the background sources is as simple as adding or removing subreddits; alternatively, local files can be utilized in their place. You can put in numerous backgrounds besides the rain themes, and the app can cycle between them or will change within a certain time. That makes the device more lively, and you can choose various types of backgrounds coupled with the rain effects to create something more unique and eye-catching than ever.

Pros and Cons:
Pros
Realistic rain visuals that stand out from looping videos
Highly configurable weather effects (fog, wind, snowfall)
Flexible background sourcing via Reddit or local images
Parallax scrolling for depth and immersion
Cons
Not ranked in top app lists, which may affect discovery
Video wallpaper feature is in beta and may be unstable for some devices

User Reviews:
It functioned perfectly. The problem is I just want to use the Google Wallpaper app on my Samsung phone and have it change the wallpaper for the home screen and lock screen daily so that they're always the same, but also change the system theme to match the wallpaper. I couldn't even manually change the system theme to match these wallpapers unfortunately. Also, some pics from reddit were lower quality, and I'm looking for just a set of 50 or less good quality pics to change daily of landscapes
When you edit rain settings in customizations and then choose a preset, the rain settings won't update to that of preset.
Great looking app but is there a way to have it cycle through multiple background images on the home screen?
Update: nope slideshow still stops. Seems to stop after SyncMe has syncronised some files and updated Media store Latest version fixes multiple background slideshow issue by limiting you to 10 images

Conclusion:
The application is compatible with Android 4.3 and later versions, ensuring a broad range of devices can utilize its features. As of version 1.4.0, released on May 4, 2017, Rainpaper has been downloaded by users looking for a fresh and visually appealing wallpaper experience. This app stands out in the personalization category by providing a unique blend of functionality and artistic expression, making it a noteworthy option for those looking to revamp their device's appearance.