MultiLing O is a custom keyboard app for Android. You can use it to input Toaq on an Android device. This app can be installed here.
MultiLing comes with a selection of diacritics out of the box. To use them, first type the desired letter, then hold-tap the key that says ,/AltGr. An alternate screen should appear; without lifting your finger, slide it to the desired choice of diacritic. However, this won’t get you typing full-featured Toaq Delta right away – luckily for us, Multiling supports custom layouts. To install these:
- Choose a layout you like, hold-tap and then drag to make a selection starting from
OK_Layout_Beginand ending onOK_Layout_End, then click Copy. - With the Multiling keyboard open: hold the spacebar, then drag your finger over to a button named Layouts in the top right that should just have appeared. (Optionally: first slide to Languages > Other > X language 1. This disables word prediction and lets you switch between English and Toaq by swiping the spacebar leftward.)
- Select [+DIY] from the pop-up list, then Paste, then OK.
The following layouts are available:
Mıao's layout
Your standard QWERTY layout with flick access to prearranged underdot + 
combos.
OK_Layout_Begin
Name:Tóaqdeota
1234567890
q[XK:ꝡw][4D:e[U+0308]éëêẹ[MC:ẹ́][MC:ẹ̈][MC:ệ]]rty[4D:u[U+0302]úüûụ[MC:ụ́][MC:ụ̈][MC:ụ̂]][4D:ıiíïî[MC:ı̣][MC:ị́][MC:ị̈][MC:ị̂]][4D:o[U+0323]óöôọ[MC:ọ́][MC:ọ̈][MC:ộ]]p
[4D:a[U+0301]áäâạ[MC:ạ́][MC:ạ̈][MC:ậ]]sdfghjkl
zxcvbnm
!@#$%^&*()
Q[XK:ꝠW][4D:E[U+0308]ÉËÊẸ[MC:Ẹ́][MC:Ẹ̈][MC:Ệ]]RTY[4D:U[U+0302]ÚÜÛỤ[MC:Ụ́][MC:Ụ̈][MC:Ụ̂]][4D:IİÍÏÎ[MC:Ị́][MC:Ị̈][MC:Ị̂]][4D:O[U+0323]ÓÖÔỌ[MC:Ọ́][MC:Ọ̈][MC:Ộ]]P
[4D:A[U+0301]ÁÄÂẠ[MC:Ạ́][MC:Ạ̈][MC:Ậ]]SDFGHJKL
ZXCVBNM
£¥€$₹^&*()№√÷
~`{}%_-=|+§∷‡
@[]#/\'"«»—‐–
…<>!;:?‹›±.,
ˉˋˇ´¨˙˚¸﹐˛˘˜ˆ
―∑éə®†Ωœøπ•·¡
æß∂ðƒ©ªº∆≠℥∞¿
ʒΩ≈çþ∫ŋµ≤≥°
OK_Layout_End
OK_Layout_Begin
Name:Tóaqdeota (Prefix Reform)
1234567890
q[XK:ꝡw][4D:eèéëêẹ[MC:ẹ́][MC:ẹ̈][MC:ệ]]rty[4D:uùúüûụ[MC:ụ́][MC:ụ̈][MC:ụ̂]][4D:ıìíïî[MC:ı̣][MC:ị́][MC:ị̈][MC:ị̂]][4D:oòóöôọ[MC:ọ́][MC:ọ̈][MC:ộ]]p
[4D:aàáäâạ[MC:ạ́][MC:ạ̈][MC:ậ]]sdfghjkl
zxcvbnm
!@#$%^&*()
Q[XK:ꝠW][4D:EÈÉËÊẸ[MC:Ẹ́][MC:Ẹ̈][MC:Ệ]]RTY[4D:UÙÚÜÛỤ[MC:Ụ́][MC:Ụ̈][MC:Ụ̂]][4D:IÌÍÏÎ[MC:Ị́][MC:Ị̈][MC:Ị̂]][4D:OÒÓÖÔỌ[MC:Ọ́][MC:Ọ̈][MC:Ộ]]P
[4D:AÀÁÄÂẠ[MC:Ạ́][MC:Ạ̈][MC:Ậ]]SDFGHJKL
ZXCVBNM
£¥€$₹^&*()№√÷
~`{}%_-i|+§∷‡
@[]#/\'"«»—‐–
…<>!;:?‹›±.,
ˉˋˇ´¨˙˚¸﹐˛˘˜ˆ
―∑éə®†Ωœøπ•·¡
æß∂ðƒ©ªº∆≠℥∞¿
ʒΩ≈çþ∫ŋµ≤≥°=
OK_Layout_End
kuhı's mobile-optimized layout
A fourth-or-so iteration of a layout originally made by uakci. Cool symbols in the shift layer; fewer keys means less fat finger fumbling. Some keys are moved out of the way or (in the case of v, w, y) folded into the ꝡ key; the underdot key stands alone on the right edge of the middle row.
OK_Layout_Begin
Name:kuhı’s mobile-optimized layout
q[XK:ꝡvwy][4D:e éëê]rt[4D:uüú û][4D:ıïíiî][4D:oöó ô]p
[4D:a áäâ]sdhjklṃ
zxcfgbn
Q[XK:ꝠVWY][4D:E ÉËÊ]RT[4D:UÜÚ Û][4D:IÏÍIÎ][4D:OÖ ÓÔ]P
[4D:A ÁÄÂ]SDHJKLṂ
ZXCFGBN
ǐŭ̀?@!|(){}
0123456789
=+-:/&€$£¥
―[]<>\;#【】
«⟪⟨-⟩⟫»·〖〗
%^*†‡‹›…〔〕
≈√≤≥÷≠±「」
OK_Layout_End
OK_Layout_Begin
Name:kuhı’s mobile-optimized layout (Prefix Reform alt)
q[XK:ꝡvwy][4D:eèéëê]rt[4D:uüúùû][4D:ıïíìî][4D:oöóòô]p
[4D:aàáäâ]sdhjklṃ
zxcfgbn
Q[XK:ꝠVWY][4D:EÈÉËÊ]RT[4D:UÜÚÙÛ][4D:IÏÍÌÎ][4D:OÖÒÓÔ]P
[4D:AÀÁÄÂ]SDHJKLṂ
ZXCFGBN
ǐŭ̀?@!|(){}
0123456789
=+-:/&€$£¥
―[]<>\;#【】
«⟪⟨-⟩⟫»·〖〗
%^*†‡‹›…〔〕
≈√≤≥÷≠±「」
OK_Layout_End