Languages & learning
EveryLingua
The whole grammar of a language — explained in your own, level by level.
34language pairs
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Software from Germany · 6 products online
We build software meant to last.
Six independent products, each under its own name. The figures below show what they do — read from the products themselves, not claimed by us.
Six products, each one usable on its own
Watersports
Bootsschein-Trainer
All 1,516 official theory questions for six certificates — explained, not just ticked.
1,516exam questions
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Citizenship & integration
Einbürgerungstest online üben
Practise every question of the German citizenship test — and see exactly when you are ready.
300general questions
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Financial knowledge
StrikeAndYield
Financial products explained — from the first sentence to the pricing formula.
129financial products
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Travel & advice
Indigo Atoll
The islands of the Indian Ocean, sorted by what you are actually looking for.
71destination profiles
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Try it
One question from each product
Not a description but the product itself: every question appears exactly like this where it comes from. Answer it and see how it continues there.
Einbürgerungstest online übenOfficial question 6
Wie heißt die deutsche Verfassung?
In German, as in the product.
Show the answer
Correct answer: Grundgesetz
Question and answers appear exactly like this in the official catalogue of the Federal Office for Migration and Refugees.
Bootsschein-TrainerSBF Sea · question 8
Welche Seite wird als Luvseite bezeichnet?
In German, as in the product.
Show the answer
Correct answer: Die dem Wind zugekehrte Seite.
Luv ist die Seite, aus der der Wind kommt, also die ihm zugekehrte. Die Bezeichnung hängt am Wind und nicht am Fahrzeug: Beim Wenden wechselt Luv die Bordseite, während Steuerbord und Backbord bleiben, wo sie sind.
EveryLinguaEnglish · simple present · A1
The shop ___ at eight in the morning.
Show the answer
Correct answer: opens
Ein Satz, ein -s: entweder am Verb oder an does.
StrikeAndYieldEquities · quiz
A 50% portfolio drawdown requires what gain to get back to even?
Show the answer
Correct answer: 100%
From 100 to 50 is −50%; from 50 back to 100 is +100%. Drawdown arithmetic is asymmetric — the reason risk management beats return-chasing.
ImmoZahlCalculator · gross rental yield
What does the rent return, measured against the price?
- Gross rental yield
- Price-to-rent factor
Annual net cold rent divided by the purchase price — the same formula ImmoZahl uses. The full calculator there works out the net figure, with purchase costs, reserves and vacancy.
Continue at ImmoZahlPosition
Software becomes good when someone enjoys looking after it for years.
So we build products we want to keep. Each gets its own name, its own signature and the time it needs — and nobody who would have to sell it before it is ready.
What can sensibly be shared, we share: the way we build, the design, the experience from what is already running. Every new product starts on ground that has proven itself.
Model
What a shared roof actually contributes
01
A shared way of building
Whatever is solved well once is available to the next product on day one: structure, delivery, design, legal texts. That saves time — and it raises the floor.
02
Independently funded
We work without outside investors. That means no deadline that robs a product of its care, and no decision taken over the heads of the people building it.
03
Experience that travels
What one product learned about imagery, languages and load times, the next does not have to learn again. Each starts where the last one got to.
04
Care as the default
Frugal with data, nothing from third-party servers: what was self-evident in the first product applies to every one after it. Standards are easier to keep than to catch up on.
- Every
Lingua Languages & learning - Bootsschein-TrainerWatersports
- Einbürgerungstest online übenCitizenship & integration
- Immo
Zahl Property & finance - Strike
And Financial knowledgeYield - Indigo AtollTravel & advice
How it is built
Four steps from file to page.
No page builder, no database, no framework in the browser. What you are reading came about this way — verifiable in every line of source.
Data
Copy, products and legal texts live as data files. Changing something means changing a line, not a page.
Generator
A script builds 44 pages in two languages from them, feed, sitemap and preview cards included.
Checks
Dead links, contrasts, missing translations: found before anyone sees them.
Delivery
Finished files onto the server. Nothing runs that could fail.
Beyond software
A label for music and film
Not everything made here is a tool. Under the same roof, a label works on original music and original video formats — with the same signature and the same rule: we publish what is finished.
Our standard
0
third-party servers
0
cookies and third-party trackers
100 %
self-funded
Written most recently
From the magazine
Citizenship test in Germany: how many questions, how many right?
33 questions, 60 minutes, a pass from 17 correct answers. What sits behind these three numbers, where the questions come from — and why the whole test can be learned in advance.
Read the articleGerman recreational boat licence (sea): questions and pass marks
30 of 285 questions, 60 minutes, two parts scored separately. Why the spread of your mistakes matters more than their number — and what comes on top of the theory exam.
Read the articleThe English simple present, explained for German speakers
The basic present tense in English has exactly one trap: the third person singular. When the simple present is used, how questions and negatives are built — and why the -s feels so illogical.
Read the articleWhere to next
What are you looking for?
Do you have an idea that could become a product?
We are happy to talk about it — openly, without obligation and with nothing to sell. Two paragraphs are enough to start.
Request a conversation