Opportunity

From fingertips to society.

Built to stay on
your home screen.

We don't start with "wouldn't it be nice" — we start with "why doesn't this exist yet?" Through planning, developing, and running iOS apps, we create products that quietly blend into daily life and become impossible to let go of.

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Philosophy

We start with questions,
not technology.

Why has this inconvenience gone unaddressed? Why can't people stick with existing apps? We design products not from what's technically possible, but from the questions that arise in people's everyday lives. That's why people use them — and keep using them.

Atama

Atama

iOS App

Focus through caffeine science.

Why we built this

You lose focus every afternoon. Coffee doesn't seem to help — because you're not paying attention to when and how much you drink. We asked ourselves: "Can we scientifically maximize the power of caffeine?"

Simply log your caffeinated drinks, and Atama automatically calculates the optimal timing based on your weight and sex. It notifies you exactly when to take your next dose, effortlessly sustaining and maximizing your focus.

Atama
WordDeck

WordDeck

iOS App

Built to make you remember.

Why we built this

You studied that word yesterday and already forgot it. The goal isn't to "learn" — it's to build a state where you can recall. That's where WordDeck started. No ads, no clutter — just pure focus on memorization through intuitive interaction.

Powered by spaced repetition based on the forgetting curve, WordDeck quizzes you right before you forget — locking words into long-term memory. Optimized for adults studying vocabulary and preparing for exams.

WordDeck
Calmo

Calmo

iOS App

AI-powered meal tracking.

Why we built this

Zero typing, zero calculations. Let AI handle all the tedious math. Just snap a photo of your meal, and it estimates the calories for you. Scientifically designed so you can manage your diet and health without the effort.

Track your daily calorie intake, PFC balance (protein, fat, carbs), nutritional breakdown, and weight changes at a glance. Even on busy days, healthy eating habits develop naturally. AI-powered advice helps you build a sustainable, rebound-resistant body. Food rankings reveal your most-eaten items and hidden nutritional gaps.

Calmo

More Products

Every app starts with a question.

SmoothRead

SmoothRead

Presentations

Speak naturally while reading your script. Adjust scroll speed and text size freely, so you can focus on delivering your best performance.

View on App Store
Petla

Petla

Pet Care

Keep all your pet's health records in one place. Share meals, conditions, and medical history with your family — and catch the moments when something's not quite right.

View on App Store
Nicopo

Nicopo

Quit Smoking

Quitting smoking is a lonely battle. Visualize your progress in real time — days smoke-free, money saved, health recovered — and find a reason to keep going every day.

View on App Store

Principles

What we put
into every product.

We believe great apps are defined not by the number of features, but by the depth of their philosophy. Three principles that run through everything we build.

01

Design by subtraction

Anyone can add features. We spend our time deciding what to remove. A UI where users make the right choice without thinking — that's what true usability looks like.

02

Quality that lasts

We care more about retention than downloads. We ship improvements every week, listen to our users, and aim for apps that people are still glad they installed a year later.

03

Good technology disappears

If you notice the technology, the design is wrong. The right technology choice is one the user never even thinks about. They just feel "this is comfortable." That's what we aim for.

Contact

What can we help you with?

Feel free to reach out.

1
2
3

Response within 2 business days

contact@opport.jp

Business Partnership

Collaborations and partnership inquiries

IR & Investment

Funding and investment inquiries

Press & Media

Media coverage and interview requests

Careers

Join our team

Other

Other questions and inquiries

Head Office

6-23-4 Jingumae, Shibuya-ku
Kuwano Bldg. 2F, Tokyo

150-0001 Japan

Company

Company Name

Opportunity, Inc.

株式会社オポチュニティ

Capital

1,000,000 JPY

Business

Software Development

Address

150-0001
6-23-4 Jingumae, Shibuya-ku
Kuwano Bldg. 2F, Tokyo, Japan

Access

Tokyo Metro Fukutoshin / Chiyoda Line

Meiji-jingumae Station

5 min walk

JR Yamanote Line

Shibuya Station

8 min walk

JR Yamanote Line

Harajuku Station

8 min walk

Keio Inokashira Line

Shibuya Station

11 min walk

Tokyo Metro Ginza / Hanzomon Line

Omotesando Station

12 min walk