Version history
Opdoku = Calcudoku + Mathdoku
63
ASO score
Text
76/100
Reviews
50/100
Graphic
60/100
Other
0/100
App Rating
4.5
Votes
31
App Age
9y 3m
Last Update
Jan 24, 2025
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
4.4
|
4.56
|
-4%
|
|
Number of Ratings (Voted)
|
30
|
3.1M
|
-100%
|
|
App Age
|
9y 2m
|
6y 12m
|
+32%
|
|
In-app Purchases Price
|
$0
|
$19
|
|
|
Update Frequency
|
323d
|
33d
|
+889%
|
|
Title Length
|
29
|
17
|
+71%
|
|
Subtitle Length
|
29
|
24
|
+21%
|
|
Description Length
|
1 428
|
2 218
|
-36%
|
|
Number of Screenshots
|
624
|
1254
|
-50
%
|
|
Size
|
0MB
|
774MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
|
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
29
of 30
)
Opdoku = Calcudoku + Mathdoku
Subtitle
(
Characters:
29
of 30
)
Challenging, Simple and Funny
Description
(
Characters:
1428
of 4000
)
M.: »Absolutely love this app - simple easy to use interface and free.«
D.: »There's no advertising, they don't ask you for money, and the puzzles are great.«
Opdoku is completely free of charge, with no adverts or additional purchases. Sounds good? Try it out today! The rules are simple:
○ As in Sudoku, each digit can only appear once in each row and column.
○ Each digit is part of a group, each of which has a mathematical operation and a result. All digits in the group have to achieve the specified result using this mathematical operation.
Your task is to enter the digits in the grid so that both of these rules are met. Sounds easy? Give it a try!
Opdoku is similar to Mathdoku, but with three improvements:
○ If you wish, the puzzle can also have two additional mathematical operations – minimum and maximum. This makes the game more varied and diverse.
○ You can solve puzzles in which only the result of a group is known, but not the mathematical operation. How is 4 reached? Is it 1 + 3, 1 x 4 or 4 / 1? Anything is possible! Hint – 1 is always present.
○ You can even solve puzzles in which not all results of the groups are known. Only geniuses need apply!
All Opdoku puzzles have a unique solution. As they are generated automatically a virtually infinite number of puzzles are available. These range from easy ones on a 3x3 grid to virtually impossible ones with barely any clues on a 6x6 grid.}
Read more
Other
Additional Information
Version history
6.0
Jan 24, 2025
- New start screen with improved help and high score
- New functionality to mark possible solutions per digit
- Puzzles are saved when the application is closed
- Visual and ergonomic improvements: click behavior, screen and font size, etc.
5.1
Jan 22, 2019
Added a new option that determines whether possible combinations are displayed.