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For YouTube creators, coaches and experts

Your videos are already a challenge. Your app, we build it with you.

Duer turns your content into things your community uses every day: challenges, courses, tools and your own branded app. You start free with a 7-day challenge we've already built from your videos. Everything else we build with you, when you need it.

No monthly fee · No exclusivity · We only earn when you sell

Your audience is big. What you actually own, not so much.

  • The algorithm decides how many people see your next video.
  • If the platform changes tomorrow, you have no way to reach your community.
  • A course means months of recording, and most platforms charge you every month before you've sold a single one.

Duer gives you products you own (your list, your course, your app) without you having to build them.

Two ways to work with Duer

Challenge platformFree · already built

Your 7-day challenge, ready to publish

We pick your best videos and turn them into a 7-day challenge with daily missions, streaks, points and an AI Coach. You review it, publish it in one click and share your link.

App studio for creatorsCustom

What your business needs, built with you

Want to charge for your method, have your own app, a quiz that grows your email list or a challenge your community does together? We tell you what's possible, how long it takes and what it costs before we start.

Three steps, and we've done the first one

  1. We've already built it

    We take your public videos and build a 7-day challenge, with credit and a link to your channel in every mission.

  2. You review it in your private space

    Change the title, the description or the order of the videos. Don't like it? Delete it in one click.

  3. You share it and decide what's next

    Put your link in your bio or video descriptions and see who comes in, who starts and who finishes.

What a challenge looks like on Duer

A real challenge, exactly as it's published today: your community watches your videos in the YouTube player and gets one concrete mission a day.

We've built 7-day challenges from the videos of 345 creators in 5 languages.

What you see, in your private link

🔒 No account, no password
  • Edit the title, description and order of the videos
  • Publish it in one click, or take it off Duer
  • Download your email list as a CSV
  • See who arrives through your link, who starts and who finishes
Open a sample challenge →

No monthly fee. We earn when you sell.

  • Free: your challenge, your page and your email list.
  • If you charge: 10% of each sale, plus Mercado Pago's or Stripe's payment processing fee. That's it.
  • Founding Creators: 0% for life. 10 of 10 spots left.
  • Custom builds: fixed price and timeline, in writing, before we start.

For comparison: what a branded app costs on other platforms

On the best-known course and app platforms, your own branded app usually sits in the most expensive plans: between USD 199 and USD 599 a month.

Duer: USD 0 a month · 10% per sale (0% for Founders)

Your Duer app installs from the browser: it's not in the App Store or Google Play.

Public prices checked on October 1, 2026 on each platform's official pricing page. They may change.

Your content, your list, your rules

  • Your videos stay on YouTube: we use the official player, so every view counts on your channel.
  • Your list is yours: every person gives their consent and you download it whenever you want.
  • No exclusivity, no contract.
  • Don't want to be on Duer? Delete it in one click from your private link and it's gone from the site.

10 spots. 0% commission for life.

Founding Creators keep 100% of what they sell on Duer, forever: courses, pre-sales, memberships and their app. They also get priority on what we build next and on their first custom project.

10 of 10 spots left.

I want one of the 10 spots

Reserving a spot is free and doesn't commit you to anything.

Questions we get a lot

I don't have time for this right now.

You don't have to do anything: the challenge is already built from your videos. Reviewing it takes a few minutes and publishing it, one click. If now isn't the time, it stays in your private link until you're ready.

Did you use my videos without asking?

We use your public videos through YouTube's official player, with credit and a link to your channel in every mission: every play counts on your channel. The page says Duer put it together and doesn't claim the challenge is yours; that's your call. If you'd rather not be there, delete it in one click from your private link (or email hola@duer.club) and it disappears from the site, the directory and search engines.

How much does it cost me?

Nothing per month. The free part is free forever. If you sell, Duer keeps 10% of each sale, and the 10 Founding Creators pay 0% for life. Custom builds come with a fixed price and timeline, in writing, before we start.

I already sell on Kajabi, Teachable or Skool. I don't want to switch.

You don't have to. Your free challenge can be the front door to what you already sell, and your email list grows in the meantime. The button that sends people to your course or coaching at the end of the challenge doesn't exist yet: if you need it, we build it first. Duer sits next to your platform; it doesn't replace it.

My audience won't download yet another app.

They don't download anything from a store: they come in through your link and, if they want, add it to their phone in two taps. Daily reminders and streaks bring them back without you having to push.

Is it in the App Store and Google Play?

No. Your branded app installs from the browser. That's why there's no monthly fee and no app-store cut (up to 30%) on your sales. If you need a native app in the stores, we quote it separately as a custom build, with a timeline of months, not weeks.

Who owns the emails of the people who take my challenge?

You do, with explicit consent from each person. Only those who opted in to hear from you show up, and you can download them as a CSV anytime. We don't sell or share that data with anyone else.

What if nothing sells? What if nobody takes the challenge?

That's what pre-sales are for: you publish the outline and only record if you hit the minimum number of reservations. If you don't, everyone gets 100% back and nobody recorded anything. With free challenges you can see how many people came through your link, how many started and how many finished.

My community speaks Spanish, Portuguese, French or German.

Your challenge, your page and your private space work in English, Spanish, Portuguese, French and German. For payments, Mercado Pago is live today (in beta, with Latin American currencies and BRL); Stripe, for USD and EUR, is being set up.

I talk about mental health or money. What about liability?

Duer challenges are about habits and guided self-help, not treatment or financial advice. You review and approve every mission before it goes live. If you add the AI Coach with your method, we set the limits with you: it doesn't diagnose, doesn't prescribe and refers people to a professional when needed.

Exclusivity? A contract?

Neither, for the free part or for selling: you can stay on every platform you use. Only custom builds come with a written agreement covering scope, timeline and price.

What happens to my stuff if Duer shuts down?

You can download your list anytime and your videos stay on your channel. Anything we build for you as a custom project is documented on delivery.

Tell us what you want to build

A real person on the team will reply, not a bot. You can also email us at hola@duer.club.

What are you interested in?
Do you already sell something? Where?

We only use this to get back to you.