uzu
Your AI learning companion

Start your AI Journey.
Play. Chat. Master AI.

Uzu is a true freemium app: every core feature is 100% free. Learn by doing with bite-sized lessons, daily quests and Rae — your glowing stingray evaluator — while your progress grows real-world impact.

Coming soon to theApp StoreGet it onGoogle Play
Every core feature free · iOS & Android
The Uzu app welcome screen — Rae, the glowing stingray, floating above the UZU logo and the hook Play. Chat. Master AI.
SYSTEM STATUS // ONLINE
3Evolution trees
16Languages supported
100%On-device memory
2Credit denominations
MEET YOUR COMPANION

Rae evaluates. You improve.

Rae is the soul of Uzu — a cute, dark, glowing stingray from the Amazon. Send a prompt and she scores it, star-rates it and shows you exactly how to sharpen your context. Learning by doing, with a companion who never judges.

Nice try! Your prompt is missing context — add who it's for and I'll raise your score.

★★★★☆ Great structure. One tip: specify the format you want back.

Uzu's Training Room: a list of bite-sized lessons like The One-Shot Prompt Anatomy.
LEARN BY DOING

Bite-sized lessons to build real-world AI skills.

The Training Room turns prompt engineering into a game you can finish on a coffee break. Pass a lesson, earn G-Credits, keep your streak.

  • Bite-sized lessons — from one-shot anatomy to advanced context.
  • Pass challenges to earn G-Credits and keep the momentum.
Rae's star-rated feedback box correcting a user's prompt with specific tips.
MASTER PROMPTING

Rae grades your prompts and makes them sharper.

Every prompt you send gets Rae's attention: a star-rated evaluation with specific, actionable tips to improve your context — so every chat makes you better at AI.

  • Star-rated feedback on your real prompts — not abstract theory.
  • Specific tips you can apply to your very next message.
Uzu's daily quests screen: Frictionless, Warm-up and Habit Builder missions with progress bars.
LEVEL UP DAILY

Daily missions that turn practice into habit.

Warm-up, Habit Builder, Frictionless — small daily missions with progress bars that reward you with Rae Stars, XP and free Gacha rolls.

  • Rewards you can feel: Rae Stars, XP and free Gacha rolls.
  • Missions sized for real life — minutes a day, streaks that stick.
Uzu's Impact Tree: a glowing teal fractal Yggdrasil tracking 14.4kg of eco-compute.
GROW YOUR IMPACT

Turn your daily progress into real-world change.

Every credit you spend grows Carbon XP on your fractal Impact Tree — a living Yggdrasil that Uzu converts into real-world carbon offsets.

  • Your Impact Tree grows branch by branch with your Carbon XP.
  • Progress becomes real carbon offsets — AI with a conscience.
Uzu's Pro screen: Pro Max at $14.99, Pro at $7.99 and No Ads at $1.99.
UNLOCK EVERYTHING

Go Pro to set your own pace.

Uzu is a true freemium app — every core feature is 100% free. Pro simply removes the pace limits: more credits, no ads and unlimited lessons.

  • Pro Max, Pro and No Ads tiers — pick your pace.
  • Free forever: lessons, quests, chat and your Impact Tree.

FREE

$0FOREVER

Every core feature, unlocked.

  • All lessons, quests, chat & gacha.
  • Welcome G-Credits + daily earnings.
  • Your Impact Tree & evolution trees.

NO ADS

$1.99/ MONTH

Ad-free gacha, nothing else changes.

  • No ads on gacha rolls — ever.
  • Everything in Free, untouched.

PRO

$7.99/ MONTH

Set your own pace.

  • No Ads included.
  • Pro LLM in Eco + 200 DAG per cycle.
  • Unlimited masterclass lessons.

PRO MAX

$14.99/ MONTH

The full current.

  • Everything in PRO.
  • 1000 DAG per cycle.
  • 3 streak freezes per cycle.
Articles

Latest articles

View all articles →

The Uzu Master Manual: Every Feature, One Page

The complete reference for Uzu's app mechanics — navigation, the dual economy, memory, personas, privacy, and every system in between. Deep-linked from the…

Read article →

The Ask Me First Technique: Let AI Interview You Before It Answers

Ask Me First flips the script: state your goal, let the AI interview you until it knows enough — one cheap Q&A round replaces three blind drafts.

Read article →

The Auditor Prompt: Turn AI Into Its Own Harshest Critic

The Auditor Prompt commands AI to attack its own work — hunting fatal flaws and weak assumptions before you ship it. Cheap insurance on anything that matters.

Read article →

The Context Window: Why AI Forgets What You Just Told It

The context window is the limited desk space where an AI 'sees' your entire conversation — and the real reason it forgets. Here's how to keep yours clean.

Read article →

Build Your Persona: A Live Workshop From First Draft to Final Cut

Draft, test, fail, refine — build a hardened AI persona step by step, and understand why running one costs premium DAG-Credits instead of standard G-Credits.

Read article →

Engineering a Persona: The System Prompt That Never Leaves the Room

A persona is a permanent system prompt — role, tone, rules, and knowledge boundaries — running silently beneath every message. The theory before the practice.

Read article →

START YOUR AI JOURNEY

Your AI journey starts today.

Download Uzu and meet Rae in minutes. Every core feature is free — your first credits are on us.

Coming soon to theApp StoreGet it onGoogle Play
iOS 15+ · Android 10+ · No account required to begin
Privacy-firstFair termsHistory & memory, offline. New AI prompts need internet.
QUESTIONS

Before you begin

Is Uzu free?

Yes — Uzu is a true freemium app. Every core feature is 100% free: lessons, quests, chat and your Impact Tree. You start with a welcome balance of G-Credits and earn more every day by playing. Optional Pro plans simply set your own pace — more credits, no ads, unlimited lessons.

What are G-Credits and DAG-Credits?

G-Credits are the standard currency earned through daily activity. DAG-Credits are the premium denomination (10 G = 1 DAG) that unlock PRO features, premium personas and legendary gacha pulls.

Does Uzu remember our conversations?

The app keeps memory locally on your device — a local RAG system built on SQLite that you can inspect, edit or erase at any time. Nothing is remembered without your knowledge, and your data never leaves your control.

Which languages does Uzu support?

Uzu speaks 16 languages natively — including English, Portuguese, Spanish, Japanese, Chinese, Arabic and more — with your content following you across all of them.

Is my data private?

Privacy is a foundation, not a feature. Your data is protected by strict policies, you can delete your account at any time, and memory is yours to inspect and erase.

Play. Chat. Master AI.

Rae is waiting.

Get Uzu