startup ui, a product studio in tokyo for AI startups and health and wellness founders

startup ui is a product studio in tokyo, led by joseph zakher. we design and build websites, web apps, and brands, with a focus on AI startups and health and wellness founders. every launch has a fixed price, a clear scope, and a working preview early. then we can stay on as your product design team.

launches from $2,500fixed pricesearly previews

six products we helped make, and where each one is today.

in AI and in health and wellness, trust is the product.

01 for AI startups

AI that shows its work.

people trust AI they can follow. we design what it says, how sure it sounds, and how people stay in charge.

  • the AI says what it's doing, in words anyone can follow.
  • people make the final call, and every answer is easy to change.
  • agents get their own visual language, so people know who is speaking.
  • it's always clear when people are talking to AI.

states we design

  • thinking
  • sure
  • less sure

seen in

zunou AI: the visual language, the glass office, the daruma ritual for agents, and the website. zaki AI: an agent that turns goals into supervised action, with its design system in english and arabic.

02 for health and wellness

calm numbers, in plain sentences.

people trust your app with their sleep and their daily habits. we design for clarity and care, so every screen feels calm.

  • every figure reads as an estimate, explained in a plain sentence.
  • daily goals that feel like play.
  • a clear reason on every permission, and data kept close to the person.
  • your regulatory advisor guides every claim, and we shape the words and screens to match.

what people see

  • estimate
  • plain sentence
  • gentle reminder

seen in

kenko AI: the product, the card system, the brand, and the website. haku health: our own app, reading plates and sleep in plain sentences.

founders and teams we've built with, from tokyo.

StartUp UI played an important role in shaping one of AstroLabs' key digital products.

andrii

brand, app, and website, made together so they feel like one product.

each one starts from the same brief: who it's for, and why they come back each day.

brand

we start with words: who it's for, what it promises, how it sounds. then we draw, and try every idea on real app screens.

what you get

  • a positioning workshop
  • a logo, colors, and typography
  • a short brand guide to keep it consistent
see the brand sprint

app

a focused web app built around your three core workflows, designed and built by the same small team.

what you get

  • the scope and your key user flows
  • up to eight main screens, designed first
  • login, a database, and a billing integration
  • a basic admin for your team
  • deployment and a handoff
  • mobile apps for iOS and android, quoted on their own
see the app launch

website

a website in your brand, ready for launch day. our targets: one landing page with lead capture in 5 to 7 business days, or up to five pages in 2 to 3 weeks.

what you get

  • copy refined with you
  • pages planned around one clear next step
  • custom design in your brand
  • a CMS you can edit
  • basic technical SEO
  • analytics on every page
see the website prices

our target: a full startup launch in 5 to 7 weeks, with a working preview early.

brand, web app, and website run side by side on one calendar, and you review the work with joseph every week. the weeks start once scope, content, access, and your part are ready.

  1. 00talkbefore week 1 · all tracks

    what happens

    a 15 minute call with joseph about what you're building and who it's for.

    you get

    a written quote with the scope, one fixed price, and target dates. or a $750 launch blueprint to shape the scope first.

  2. launch blueprintoptional · before week 1 · all tracks

    what happens

    a workshop to set your scope and your key user flow, with a wireframe.

    you get

    a fixed quote for your launch. book it within 30 days, and the $750 comes off its price.

  3. 01kickoffweek 1 · all tracks

    what happens

    a kickoff to walk through your agreed scope: who it's for, your three core workflows, and what launch day holds.

    for AIwe map what your model does, and how the product shows its work.

    for health and wellnesswe gather every sentence about the body, ready for your regulatory advisor.

    you get

    your acceptance criteria, agreed.

  4. 02brandweeks 1 to 2 · brand

    what happens

    a logo, colors, typography, and short guidelines: a starter identity, ready for your product and your site.

    you get

    your starter brand identity.

    seen in

    zunou AI
  5. 03designweeks 1 to 3 · app

    what happens

    flows first, then up to eight main screens, with a clickable preview early. two rounds of consolidated changes.

    for AIevery state the AI can be in, designed with real answers from your model.

    for health and wellnessevery figure shown as an estimate, explained in a plain sentence.

    you get

    your app design, ready to build.

    seen in

    zaki AI
  6. 04buildweeks 2 to 6 · app

    what happens

    a focused web app with login, a database, a billing integration, and a basic admin, built by the team who designed it. you try a working preview as it grows.

    for AIwe build the product side of your model: calling it, showing answers as they arrive, and every state in between, scoped in your quote.

    you get

    your web app, deployed.

  7. 05websiteweeks 3 to 5 · website

    what happens

    words first, then design, then the site, with a CMS you can edit, basic technical SEO, and analytics.

    for AIone clear sentence on what your AI does, then the product showing it.

    you get

    your website, live.

    seen in

    kenko AI
  8. 06launchweeks 5 to 7 · all tracks

    what happens

    deployment, a handoff of every account and file, and launch day together.

    you get

    your launch, with 30 days of fixes for defects against the agreed scope.

  9. every weeka review with joseph
  10. 07product designevery month after launch · growth or partner

    what happens

    we stay on as your product design team, with capacity reserved for you.

    1. every weekplanning and a review with joseph
    2. each initiativeagreed scope and acceptance criteria. growth runs one at a time
    3. as you growflows, onboarding, and design-system updates
    4. with your teamhandoff to your engineers, or engineering quoted as extra capacity

your part

an hour each week for the review, and answers within a working day. one person who can say yes. your content and access, ready at kickoff.

see the prices

a few beliefs we bring to every app.

01

calm by default

one clear thing per screen, at a pace that respects the person using it.

02

close to the person

data stays close to the person it belongs to. tabilog keeps it on the phone.

03

made to come back to

daily rituals people enjoy returning to, kind in every reminder.

04

small and senior

you work directly with joseph, and the people who design your app also build it.

joseph zakher, founder of startup ui

joseph zakher

founder, designer, and author in tokyo. 10+ years of building products, now in health, wellness, and AI. through startup ui, founding partner for design and go-to-market at zunou AI. he designs and builds apps of his own too, like tabilog. he also writes joyful journey, a weekly letter about making meaningful things.

the studio

  • obi noshiesenior art director
  • karim tabbarasenior ux/ui designer
  • sidhant bansaloperations manager

you work directly with joseph, every week, and the team who designs your app also writes its code.

fixed prices, a clear scope, and a working preview early.

a fixed price for every launch, a blueprint to start small, and a product design team every month after.

launches, at a fixed price

or one at a time

target: 5 to 7 business days

landing sprint

one custom landing page, ready to collect leads.

$2,500

fixed price

book a landing sprint

you have

  • copy refined with you
  • a responsive build
  • analytics and lead capture

target: 2 to 3 weeks

website launch

a website of up to five pages, in your brand.

$5,500

fixed price

book a website launch

you have

  • custom design and copy refinement
  • a CMS you can edit
  • basic technical SEO and analytics

target: 4 to 6 weeks

app launch

a focused web app around your three core workflows.

$12,500

fixed price

book an app launch

you have

  • up to eight main screens
  • login, a database, and a billing integration
  • a basic admin for your team

target: 1 to 2 weeks

brand sprint

who it's for, what it promises, and how it looks.

$3,500

fixed price

book a brand sprint

you have

  • a positioning workshop
  • a visual identity
  • a short brand guide

every launch includes two rounds of consolidated design changes, deployment and a handoff, and 30 days of fixes for defects against the agreed scope. new ideas, larger features, and mobile apps get their own quote. targets start once scope, content, access, and your part are ready.

start small

launch blueprint

a workshop that turns your idea into a plan: the scope, your key user flow, a wireframe, and a fixed quote for your launch.

$750

credited in full to a launch booked within 30 days

book a blueprint

after launch, every month

for a live product with a backlog

product design growth

we work through your prioritized backlog, one initiative at a time.

$11,000/ month

billed monthly · engineering quoted separately

talk about growth

every month, you have

  • a ux/ui designer, reserved part-time
  • art direction and milestone reviews
  • joseph on weekly priorities, scope, and quality
  • a weekly review, one initiative at a time

the work can include

  • product flows and onboarding
  • design-system updates
  • website improvements tied to your product priorities

for an ongoing design function

product design partner

a managed product design function, alongside your engineers.

$25,000/ month

billed monthly · engineering quoted separately

talk about partnership

every month, you have

  • a ux/ui designer, focused mainly on your product
  • art direction across product, brand, and launch work
  • joseph on roadmap, stakeholders, and quality
  • weekly planning with your team

the work can include

  • larger product initiatives and design systems
  • research and validation
  • your website and brand, as you grow
  • coordination with your engineers

monthly plans are design plans, with the capacity set in your agreement. engineering and release testing join as extra capacity, quoted when you need them.

what the price covers

  • one team

    an art director, a ux/ui designer, and joseph as design manager. one small senior team designs and builds your launch, on one calendar.

  • focus

    we've shaped products in both fields: zunou AI for AI, and kenko AI for health and wellness.

  • one number

    every launch has a fixed price and a set scope. your quote holds both, with target dates and the payment plan.

I would confidently recommend Joseph and the StartUp UI team if you are looking for a reliable product design partner.

joe

prices in usd, updated . more on what shapes the price, payments, and ownership in the questions below.

questions founders ask before we start.

the price

why is a full startup launch $19,500?

it covers a focused web app with three core workflows and up to eight main screens, login, a database, a billing integration, and a basic admin. it adds a website of up to five pages with a CMS, and a starter brand: logo, colors, typography, and short guidelines. the app launch, the website launch, and a brand sprint come to $21,500 booked separately. shared discovery and design work save you $2,000.

what shapes the price?

every launch has a set scope, listed on its card. larger features, such as marketplaces, big migrations, offline sync, regulated workflows, or custom integrations, get their own discovery and price before work starts. mobile apps for iOS and android are quoted on their own.

how do payments work?

launches: 50% to book, 30% at the working preview, and 20% at acceptance. a launch blueprint is paid when you book it, and the $750 comes off a launch booked within 30 days. monthly plans are billed each month, on the terms in your agreement.

who owns the work?

you do. your code, your website, and your accounts stay in your name from day one, and everything we make is yours once it's paid. we're happy to sign your nda first, and we show the work in our portfolio once it's public.

start here

what is a launch blueprint?

a $750 workshop that turns your idea into a plan: the scope, your key user flow, a wireframe, and a fixed quote for your launch. book a launch within 30 days, and the $750 comes off its price.

what comes with every launch?

two rounds of consolidated design changes, deployment, a handoff, and 30 days of fixes for defects against the agreed scope. new ideas get their own quote, or join a monthly plan. you see a working preview early, and the second payment comes with it.

working together

what happens after i book a call?

a 15 minute call with joseph about what you're building and who it's for. then a written quote with the scope, one fixed price, and target dates, or a $750 launch blueprint to shape the scope first.

how long does a launch take?

our targets: a landing page in 5 to 7 business days, a brand sprint in 1 to 2 weeks, a website in 2 to 3 weeks, a web app in 4 to 6 weeks, and a full startup launch in 5 to 7 weeks. the weeks start once scope, content, access, and your part are ready, and you see a working preview early.

how do you use AI?

AI speeds up layouts, scaffolding, routine integrations, first drafts of copy, and testing. experienced people make the product decisions, and own permissions, payment failures, edge cases, quality, and the release checks.

who will we work with?

joseph, as your design manager: priorities, scope, quality, and your day-to-day contact. on launches, joseph and the team also write the code. obi noshie is our senior art director, karim tabbara our senior ux/ui designer, and sidhant bansal runs operations.

do you build mobile apps?

yes, quoted on their own. the app launch is a focused web app. for iOS or android, we scope your app with you and give you a fixed quote. tabilog and haku health, our own apps, are native iOS.

we already have a product. can you join us?

yes. product design growth, at $11,000 a month, works through your prioritized backlog with a weekly review. product design partner, at $25,000 a month, runs your design function alongside your engineers. we redesigned schedex so any restaurant can set itself up, and refreshed its brand and website.

do the monthly plans include engineering?

they're design plans, with an art director, a ux/ui designer, and joseph as design manager. engineering and release testing join as extra capacity, quoted when you need them.

you're in tokyo. have you worked on products for japan?

yes. we're based in tokyo, and we shaped kenko AI's product, brand, and website. its waitlist is open in japan. clients in japan can reach us on LINE or by phone at +81 70-9144-4114.

AI and health

do you work with our own model?

yes. we design with real answers from your model early. then we build the product side: calling your model, showing answers as they arrive, and every state in between, scoped in your quote. your team keeps the model.

is our app a wellness app or a medical device?

your regulatory advisor guides that call, based on what your product is meant to do. we design with their guidance. our part is clarity and care: plain sentences about habits and patterns, and every figure shown as an estimate.

can you work with rings, straps, and other wearables?

yes, with a mobile app quoted for your device. we design the pairing, the permissions, and the daily view, and your hardware team keeps the device and its firmware. kenko AI, a smart ring and strap, is one of the products we've shaped.

where does our users' data go?

privacy is part of the design from the first sketch. tabilog, our own app, keeps its data on the phone. your legal advisor confirms which privacy laws apply.

will apple approve a health or AI app?

approval is apple's call. for mobile apps, we plan for review from the first week: careful claims, clear permission requests, and privacy details that match the app.

still curious? ask joseph

building an AI product or a wellness app? let's make it together.

we're a good fit for founders in AI or in health and wellness who know who they're building for.

  1. 01a 15 minute call with joseph
  2. 02your written quote, or a launch blueprint
  3. 03kickoff, with a working preview early
book a call

the studio is in tokyo.