Your written-plan coach
Duzz Leo
Written Plan coach. Judges your written and your pitch.
“Let's make this written un-beatable. Where are you stuck?”
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The product
Everything in one place.
Research, write, practice, present, with an AI mentor who knows the rubric.
duzz.us/app
Good afternoon, Maya Join game
Today's missions +20 XP today
Open DUZZ today+20 XP
Finish a practice test+60 XP
Run one roleplay+80 XP
Weekly leaderboard
1Ava M.2,840
2You2,610
3Jordan K.2,590
4Priya S.2,410
Test prep that sticks.
Full cluster exams with instant feedback and live score tracking.
Roleplay with an AI judge.
Present live, field real follow-ups, and get scored on the actual rubric.
A plan that beats cramming.
A calendar scheduled backward from competition day, so you peak on time.
Written reports, generated.
Draft your outline against the event's page budget, then grade and compliance-check every section.
duzz.us/app/testing
TestingMarketing · Full exam
12 / 1008 correct
A new tech brand launches a premium smartwatch at a high price to maximize early profit. Which pricing strategy is this?APenetration pricing
BPrice skimming
CCost-plus pricing
DLoss-leader pricing
duzz.us/app/roleplays
RoleplayESB · Entrepreneurship
Transcript
…our target margin is 38% by year two,and we'd reinvest early profit intochannel partnerships to scale faster.
J
Judge91%“Strong financials. How would you defend that margin if costs rose 10%?”
Identify need90%
Present solution78%
Communication85%
duzz.us/app/study-plan
Study Plan 14 days to ICDC
This week5 sessions · Marketing
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Today · Roleplay drill
Entrepreneurship · 25 min · judge Q&A
duzz.us/app/written
Written ReportEBG · 20-page report
AI outline Generating…
Executive Summary1 pg
Description of Business3 pg
Market Analysis4 pg
Proposed Strategy & Plan6 pg
Judge grade92%
“Crisp strategy section. Tighten the market sizing and you're finals-ready.”
ComplianceWithin 20-page limit
Penalty points avoided
Bibliography cited
Testing
Test prep that sticks.
Full cluster exams with instant feedback and live score tracking.
Roleplays
Roleplay with an AI judge.
Present live, field real follow-ups, and get scored on the actual rubric.
Study Plan
A plan that beats cramming.
A calendar scheduled backward from competition day, so you peak on time.
Written Reports
Written reports, generated.
Draft your outline against the event's page budget, then grade and compliance-check every section.
Your coaches
Meet your coaching staff.
Four coaches, each with a job. They know the events, the rubric, and what you're working on right now.
Your roleplay coach
Duzz Ranvir
Roleplay coach. Runs the scenario, asks the follow-ups, scores you.
“Ready to run a roleplay? I'll keep it real, like a real judge.”
Tap me any time
Duzz Baz
Lives in the corner of every screen. Sees what you're doing.
“Yo! I can see what you're working on. What do you need?”
Ask me anything · drop in your files
Duzz Bella
The AI Assistant. Hand her a file and ask anything about it.
“Hi! Drop in a written, deck, or notes and ask me anything about it.”
Pricing
Free to start. Plus when you're serious.
No card to begin. One flat price when you want the AI judge in your corner.
Free
$0forever
Everything you need to learn your event and start practicing.
- Every event guide, cheat sheet, and playbook
- 10-question practice tests with instant feedback
- Roleplay scenarios with a prep timer
- Live class games and 1v1 duels
- Daily shop, characters, XP, and streaks
DUZZ PlusMost popular
$7.99/ month
Every AI tool, unlimited. Cancel any time.
- Unlimited AI practice tests & roleplays
- Roleplay recording with AI judge feedback
- AI feedback on every project
- Full-length practice exams (50 & 100 questions)
- Written plan, study & presentation AI tools
- 200 free coins for the character shop
Billed monthly. Manage or cancel from your account.
In a chapter on DUZZ? Students who join an advisor's class get Plus included, and advisors get the whole classroom toolkit.
For schoolsIs DUZZ affiliated with DECA?
No. DUZZ is an independent study tool built by DECA alumni. It is not affiliated with or endorsed by DECA Inc. Event names, clusters, and rubric structures are referenced so your practice matches the real thing.
Which events does it cover?
All 27 roleplay events (Principles, Individual Series, and Team Decision Making) and 23 written and pitch events across Marketing, Business Management, Finance, Hospitality & Tourism, Entrepreneurship, and Personal Financial Literacy.
What's free, and what's Plus?
Guides, 10-question practice tests, roleplay scenario practice, live class games, and the shop are free. DUZZ Plus adds the AI judge (recorded roleplays and written grading), full-length exams, and the Written Plan, study, and presentation tools. See pricing.
How does my chapter or advisor get on?
Advisors request access from the For schools page. Once provisioned, they create a class and share a six-character code. Students enter it on their dashboard and are in, with Plus included.
How does the AI judge score me?
Each event's actual evaluation form is loaded: the performance indicators, the 21st-century skills, and the overall-impression points. You present, the judge asks follow-ups, and you get a score out of 100 with notes on each line of the rubric.
What happens to my camera and voice?
Your camera feed stays on your device. It is there so you can see yourself present, and it is never uploaded. Your speech is turned into text and only the transcript is sent to be scored. Details are in the privacy policy.
Does it work on my phone?
Yes. duzz.us works in any modern browser, phone included. Your progress, coins, and characters follow your account, so you can practice on a laptop at school and review flashcards on your phone that night.
Your next event starts today.
Free to start. No card. Your whole chapter can join with one code.