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Sound familiar?

So many
great apps.

And they all cost money.

I do things differently.Almost all of my apps are completely free.

No sign-up · right in your browser

My promise

Software has
cost money
long enough.

Jump right in

Pick
one out.

Just tap “Start” – and you're in. No sign-up.

Quiz night on the TV, phone acts as the buzzer
TV quiz night

Your own quiz.
Right on your TV.

Klaus' Quiz-Show

  1. 1Drop in a Wikipedia link or doc – any niche topic works.
  2. 2One tap: I'll build the finished quiz.
  3. 3Play it on your TV. Every phone becomes a buzzer.

NeuUpload a photo of your living room – I'll turn it into the show's set.

Free · first custom studio on the house

Secret Santa
Christmas

Drop a link in the group.
Everyone gets their match.

Secret Santa

  1. 1Set up your group and share the link.
  2. 2Everyone adds their wish list.
  3. 3I draw the names. No one gets themselves.

Free

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Regal
Bookshelf

Just one snap.
Your shelf goes digital.

Regal

  1. 1Snap a photo of your bookshelf at home.
  2. 2I read every spine, shelf by shelf.
  3. 3Tap a book for all the details and reviews.

Free

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Volltreffer
Bundesliga

Picks in one minute.
Your very own club.

Volltreffer

  1. 1Predict this week's matches.
  2. 2I draft 18 real Bundesliga players for you.
  3. 3Go head-to-head in your league each week.

Free

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Jurtsel
Trivia Night

Over 75,000 questions.
Everyone gets a buzzer.

Jurtsel

  1. 1Play together: questions on TV, buzzers on your phone.
  2. 2Over 240 topics, from football to physics.
  3. 3Or play solo, question by question.

Free

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Teller
Nutrition

Snap your meal.
All sorted.

Teller

  1. 1Snap a photo of your plate.
  2. 2I spot the food and estimate the portions.
  3. 3Calories, protein, fat, carbs, and vitamins – all done.

Powered by AI: first month free, then 2.99 € a month – for the whole family

Learn more
Quitt
Travel expenses

Pay up. Split it.
Quitt.

Quitt

  1. 1Everyone types in what they spent.
  2. 2I work out who owes what.
  3. 3One link to the group chat – done.

Free

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StadtLandBlitz
Game night

City. Country.
Blitz!

StadtLandBlitz

  1. 1The wheel picks the letter.
  2. 2Everyone types on their phone, I check the answers.
  3. 3Works on your TV too – for 2 to 8 players.

Free

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And that's not all.
Ready to play right away.

  • When are you free?Find a date without the back-and-forth – one link, everyone signs up.
  • My green neighborhoodTurn your real neighborhood green.
  • Klaus-SchachReal chess against friends or Klaus.
  • SkatSkat with Klaus, friends, and score sheet.
  • Mau-MauThe card game – against Klaus or your friends.
  • Zoom-HeldThe picture sharpens – who spots it first?

That’s just the beginning.

My mission

Software has cost
money for
long enough.

Simple software costs almost nothing to run today. So it shouldn't cost you anything either. Games and tools, free for everyone – with more added every month.

Only things with ongoing costs, like AI, cost a few cents here. Far less than with the big tech guys.

And if it doesn't exist yet, you'll soon build it yourself: just tell me what you need. No coding skills needed.

Everyone enjoys great software for free. Anyone can build their own.

What are you
in the mood for?

Show me the apps
Show me the apps