Input all characters in Unicode with UnicodePad.
And input string can be copied to the clipboard or input directly by Mushroom.
You can find out where selected character is in list.
By long clicking, larger character and code point will be shown.
Favorite characters can be memorized.

If you can't see special characters, you have to get a font such as Noto font and select it.
You can download Noto fonts from: www.google.com/get/noto/

Controls:
Click - Input character
Long click - Show character information

You can contribute to this app in GitHub.
github.com/Ryosuke839/UnicodePad

This application includes a modified version of Unicode Data File.
(www.unicode.org/Public/13.0.0/ucd/NamesList.txt)
Copyright © 1991-2020 Unicode, Inc. All rights reserved.
Distributed under the Terms of Use in
www.unicode.org/copyright.html.

From version Unicode Pad 2.10.4:

v2.10.4 (2021/09/23)
- Fixed crash on opening duplicated font
- Fixed crash on editor action

v2.10.1 (2021/09/20)
- Supported Unicode 14.0.0
- Supported ACTION_PROCESS_TEXT intent: UnicodePad is openable from text selection menu
- Added filter on block list
- Emoji is searchable from find tab
- Added setting import / export feature
- Added locale selection feature for locale dependent glyphs
- Added Georgian translation
Details: github.com/Ryosuke839/UnicodePad/releases/tag/v2.10.1

Variant
Arch
Version
DPI
(nodpi) (Android 2.3+)
Latest: 2.2.0 on September 18, 2017
All versions
Unicode Pad 2.10.4
September 23, 2021

Version:2.10.4

Uploaded:September 23, 2021 at 1:20PM UTC

File size:3.11 MB

Downloads:103

Unicode Pad 2.10.2
September 20, 2021

Version:2.10.2

Uploaded:September 20, 2021 at 4:09AM UTC

File size:2.4 MB

Downloads:28

Unicode Pad 2.9.1
February 23, 2021

Version:2.9.1

Uploaded:February 23, 2021 at 5:56AM UTC

File size:2.04 MB

Downloads:81

Unicode Pad 2.9.0
February 22, 2021

Version:2.9.0

Uploaded:February 22, 2021 at 5:22AM UTC

File size:2.04 MB

Downloads:31

Unicode Pad 2.8.0
August 17, 2020

Version:2.8.0

Uploaded:August 17, 2020 at 1:35AM UTC

File size:2.02 MB

Downloads:107

Unicode Pad 2.7.0
April 5, 2020

Version:2.7.0

Uploaded:April 5, 2020 at 8:16PM UTC

File size:1.93 MB

Downloads:163

Unicode Pad 2.6.1
March 22, 2020

Version:2.6.1

Uploaded:March 22, 2020 at 3:14PM UTC

File size:3.14 MB

Downloads:105

Unicode Pad 2.5.0
May 20, 2019

Version:2.5.0

Uploaded:May 20, 2019 at 12:42PM UTC

File size:2.05 MB

Downloads:185

Unicode Pad 2.4.0
June 11, 2018

Version:2.4.0

Uploaded:June 11, 2018 at 8:28PM UTC

File size:2.04 MB

Downloads:312

Unicode Pad 2.3.1
March 6, 2018

Version:2.3.1

Uploaded:March 6, 2018 at 8:20PM UTC

File size:2.02 MB

Downloads:328