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
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.
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.
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.
More Products
Every app starts with a question.
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
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
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 StorePrinciples
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.
Contact
What can we help you with?
Feel free to reach out.
Response within 2 business days
contact@opport.jp
Business Partnership
Collaborations and partnership inquiries
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Careers
Join our team
Other
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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
JR Yamanote Line
Shibuya Station
JR Yamanote Line
Harajuku Station
Keio Inokashira Line
Shibuya Station
Tokyo Metro Ginza / Hanzomon Line
Omotesando Station