appful Inc.
#Make the world beautiful,with apps
The app you catch yourself opening every day.
We craft experiences people can't put down.
OUR MISSION
What drives us
We build what people fall for
We deliver obsession, in the shape of an app.
We are a team that builds the kind of obsession people cannot put down, and ships it as an app.
Not just useful, not just featureful — we are after the product you open every day without noticing, and want to tell someone about.
We stay with the experience itself, shipping and testing fast, until something new has quietly settled into the everyday.
PRODUCT
The Merotalk series
Feed it a chat history, and the relationship inside it comes into view.
appful's flagship series, reaching into every place a conversation happens — LINE, DMs, group chats.
Compatibility, interest, harassment: one analysis engine angled a different way each time, past a million downloads across the series.
Hit record and AI turns lectures into clean notes, then auto-generates quizzes and flashcards from them. An AI study app built by students, for students.
Record → AI auto-notesGenerates quizzes & flashcardsBy students, for students
Install
A single-player mystery where you comb through a fictional phone — chats, photos, transfers, travel history — and pull the scattered evidence into one line of reasoning. Every character and service in it is invented.
Search a fictional phoneJoin the evidence upCase one is free
Install
Your friends answer 24 questions about you, and the app sorts you into one of 16 animal types — revealing the real you that others see, and how it differs from your own view.
24 questions answered by friendsResults as 16 animal typesReveals self-vs-others gaps
Install
A Y2K camera app that recreates the compact digicams of the 2000s right on your phone — all 16 filters, including film-style LUTs, completely free.
A faithful Y2K digicam UI16 free film-style filtersDynamic Island becomes the lens
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Inspired by the disposable film camera, friends shoot one shared "roll" together and relive it as a group — the film "develops" only once it's finished, keeping the real moment.
Shoot a shared roll togetherFinish it, then it 'develops'Join on the spot via QR
Install
A photo tidier where keep-or-delete is a single swipe. It takes a camera roll you have been putting off and moves it one picture at a time, at a pace that never asks you to deliberate.
Keep or delete on a swipeClears a whole camera rollA pace that keeps you moving
Install
NEWSThe Merotalk series passes 1M downloads
COMPANY
Company overview
INFOCompany details
Companyappful Inc.
AddressNishi-Shinjuku Mizuma Bldg. 2F, 3-3-13 Nishi-Shinjuku, Shinjuku-ku, Tokyo, Japan
FoundedMarch 4, 2026
CEORyusei Okamoto
For inquiries or career opportunities, feel free to reach out.
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