Let's run random slideshow of your favorite photos/pictures!!

This app is the viewer that shows random slideshow of photos/pictures in multiple directories/folders.
This app could be substituted for the photo frame.

You can use this app in both enviroments of smartphone and tablet !!

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====== Features ======
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1. Easy selecting multiple directories including photos/pictures
(Automatically pick up directories including photos !!)
2. Go next/previous photos by flick gesture
3. High stability (No crash users ratio is 99.81% !!(*1))
(*1)...From firebase crash report in June, 2019.

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====== Functions ======
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- Automatically pick-up of directories including photos
- Select multiple directories
- Select firectory by file-manager

- Flick gesture operation
(1) Go next/previous photos
(2) Stop / Resume slideshow

- Change slideshow order
(1) Random ON/OFF
(2) Repeat ON/OFF
(3) Prohibit duplicate ON/OFF

- Music function

- Change fade-in/out time
- Change background color

- Photo zoom mode (if tapping phots)
- Delete photos (if long-tapping photos)

- Show Filename
- Change filename color
- Timer functions

- Change many other options
(1) GIF animation ON/OFF
(2) Show progress-bar ON/OFF
(3) Enable flick ON/OFF

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======= Ohters =======
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Test devices:
1. Smartphone: Huawei P9 lite (Android 7.0)
2. Smartphone: Samsung Galaxy 3 Docomo (Android 4.1.2)
3. Tablet: Huawei MediaPad M3 (Android 7.0)
4. Tablet: Emulator Nexus7


Thank you for reading this until the end :)