SulekhaDD
“Accuracy is the constraint we design around.”
What we do
Civics learning, made in-house
SulekhaDD AB is a mobile learning software developer based in Kungälv, Sweden.
We keep research, content, engineering, design and release in-house. Material is researched from published sources — public authorities, reference works and encyclopaedias — checked before it ships, and corrected as facts change.
Our app
Dūbu
Our app, Dūbu, helps people preparing for a citizenship or civics test study the society they are joining — its history, institutions, geography and everyday life — in themed decks of study cards with practice quizzes.
Themed study decks
Decks of study cards on history, institutions, geography and everyday life, each with practice questions.
Works offline
Once a deck is downloaded, its cards can be studied without a connection.
On-device translation
Card content can be translated on the phone into 58 languages, for learners studying in a second language.
Checked against sources
Every card cites its sources, is checked before it ships, and is corrected when the facts change.
Practice
Free practice tests
A free practice test for Sweden, with a short summary of every chapter, in six languages. More countries follow as they are released.
Sweden Available
Medborgarskapsprovet
Germany Coming soon
Einbürgerungstest
Company
Company record
As registered with Bolagsverket, the Swedish Companies Registration Office.
- Legal name
- SulekhaDD AB
- Type
- Aktiebolag (Swedish limited company)
- Organisation number
- 559597-8635
- Registered office
- Kungälv, Sweden
- Registration
- Bolagsverket (Swedish Companies Registration Office)
Jurisdiction: SwedenOrg. nr 559597-8635
Help
Dūbu Wiki
One page covering how the app works end to end — studying decks, the three ways to play, how points are scored, and what happens when you top the leaderboard. The same guide whichever country you are studying.
Study
Decks and cards
Play
Three ways to play
Score
Points and the leaderboard
Contact
Contact
Company & press
Company matters and press enquiries.
Dūbu support
Questions about the app, and corrections to its content.