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A crash occurs on some devices (about 1%).
Currently under investigation. So sorry.
If so, try the following:
- If it is installed on the SD card, please move it on the device memory
- Try setting "Image Resolution" to Low

If it still crashes, please report it below (link in app)
https://forms.gle/pF4wMVU4y8DoFrZc6

<< App Description >>
You can easily create a character relationship diagram (Family tree, etc)

Create a character relationship diagram of novels, manga, movies, dramas, games, historical figures, etc.

- Person creation
Set image, name, memo.
Nickname can also be set and displayed (protagonist, heroine, villain, etc.)
Adjustment of size, display method and background is also possible.

- Relationship creation
Set image, name.
Connect persons with lines and arrows to create relationships.
Adjustment of size, display method, line, background is also possible.
Also available for long text display.

- Group creation
Set image, name.
Can express persons in a groups.
Adjustment of size, display method, line, background is also possible.

- Background
Image, color change is possible.

- Canvas
Adjustable canvas size.
Pinch in, pinch out, move the canvas with two fingers.

[Future Development]
Not to mention small function additions,
Share, Cloud save, post-function, etc will be added.
I'm glad if you can support by a review.