App: wallpaperGUARD
Developer: Jiulong Zhao
Genres: Wirtschaft, Dienst­programme

A wallpaper monitor, remind you of saving and classifying desktop pictures whenever you change or get a new wallpaper.
And, one key quick switching your recent 10 desktop pictures!

I love my desktop pictures, which is my motivation behind coding this app. I am very annoyed at the fact that some apps and online wallpaper services always try to download and save their wallpapers in some undocumented, HIDDEN, or even system folders like "/Users/your-name/Library/Application Support/the-app-name". Which really makes it tough for me to organize them.

Meanwhile, there's also another problem. Say you're surfing the web and come across a good picture, and you set it as your wallpaper with a simple right click of "Use Images as Desktop Picture". This is all good and well until you change your wallpaper again the other day. Now, where is the old one? Maybe you know they are all in the same name of "Safari Desktop Picture.jpg", you've lost the old one unless you dragged it from System Preferences to a folder manually.

wallpaperGUARD is here helping you. Just set a parent folder as your default desktop picture's folder, you may also add as many as classify subfolders like "arts", "beauty", "cars" deep in 4 levels. You're done! Now, any new image that becomes your wallpaper, whether it was set by another app, a web service, or yourself, will be checked by the wallpaperGUARD for its real location. If it is already in your default folder, so much the better. But, if it is not, wallpaperGUARD will pop out and offer to copy or move it to anywhere for you, it's that simple!

Especially consider this app if you have more than 50 desktop pictures or if you have no idea where more than half of your wallpapers are stored.

wallpaperGUARD, the lover of wallpaper lovers!

Features v1.10
- fully automatic respond whenever your desktop picture changed by you or other apps
- auto check and compare your default collections folder deep in 4 level subfolders
- a newly changed desktop picture can be easily copied or moved to any folder you select
- automatic overwriting protection, never worry about wallpaper pictures in the same name
- very rapid picture check and very minor system resource usage because app-only check the picture file's location folder instead of the check of itself
- option to hide the app's dock icon

v1.10 -> v1.30
- detecting engine changed
- color of the app's icon changed
- dragonBTV panel updated

v1.30 -> v2.50
- fully re-coded for macOS Sierra 10.12 
- updated to macOS Sierra 10.12 and still compatible with OS10.7 and above
- brand new function added:
   recent used 10 desktop pictures can be one key accessed from the status menu
- hide dock icon option updated for instant switching without restarting the app
- reset saving folder menu and alert added
- tips for "no historical item yet" added
- tip added for auto open at login (autostart)
- more by dragonBTV updated

v2.50 -> v2.51
- app size dramatically reduced
- menu re-arranged for simplification
- more by dragonBTV simplified
- performance improvements for macOS 10.13 High Sierra

v2.51 -> v2.70
- Any Mac (Apple Silicon, Intel) version for macOS Big Sur
- startup tip modified
- save to other option deleted as it's useless
- app version display added
- waining alert added for quick list removing
- support menu updated 
- status menu icon modified for dark and light mode
- preferences interface modified
- hide app dock icon function rewritten
- all deprecated functions rewritten

Release notes:
v2.51 -> v2.70
- Any Mac (Apple Silicon, Intel) version for macOS Big Sur
- startup tip modified
- save to other option deleted as it's useless
- app version display added
- waining alert added for quick list removing
- support menu updated 
- status menu icon modified for dark and light mode
- preferences interface modified
- hide app dock icon function rewritten
- all deprecated functions rewritten