App Store & Play Store optimization · 日本 · 한국 · 台灣 · 中国

Your app is invisible in Japan.

You already have downloads and reviews in Japan, Korea and Taiwan — the demand is real. But your store listing is still in English, so local search can't find you. We rewrite it in the language your users actually search in.

Get a free Japanese listing audit See what we do
We light up JapanKoreaTaiwanChinaHong KongSingapore
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The problem

Real demand. Lost downloads.

People in Japan, Korea and Taiwan are already finding your app — and reviewing it in their own language. So why are you leaving the rest on the table?

~60%
of App Store visitors search in their native language. An English-only listing barely ranks for those queries.
4
East Asian languages — Japanese, Korean, Traditional & Simplified Chinese — covering Japan, Korea, Taiwan, Hong Kong, China and Singapore.
0
changes to your app required. The leak is in the store page, not the product.
01

You already have reviews in Japanese — that means demand is proven. The market wants what you built.

02

But your title, subtitle and keywords are English, so Japanese search all but skips you. The leak is downloads — and for paid apps, sales.

03

You don't have to touch a line of code. Fixing the store listing alone moves the numbers — and Apple's built-in A/B test (Product Page Optimization) proves it.

What we do

App Store Optimization, done natively.

We're an ASO team — keywords, metadata, creative and conversion. We rewrite the parts of your App Store and Google Play listing that drive discovery and conversion, for the four hardest East Asian languages to fake.

Japanese

日本語 · native

Title, subtitle, keyword field and description rewritten for how Japanese users actually search — native-level, in-house.

Korean

한국어 · native

Localized for Korean search idiom and the App Store ranking signals that matter in Korea.

Traditional Chinese

繁體中文 · native

For Taiwan and Hong Kong — the right characters, the right wording, not a Simplified find-and-replace.

Simplified Chinese

简体中文 · native

For Mainland China's App Store — keywords and copy tuned to local search and conventions.

Keyword research App name & subtitle Keyword field Description Screenshot captions What's New Promotional text PPO A/B testing

Native, not machine translation.

Why us

We've shipped East Asian listings at scale.

Two people who have done exactly this before — engineering and ASO under one roof.

Background
Previously MxxxxBxx — a Y Combinator-backed app company with 300M+ downloads worldwide.
Done before
App Store ASO at global scale — North America, Europe and East Asia — across many languages and hundreds of millions of downloads.
Languages
Native Chinese and native-level Japanese, in-house.

"Previously" / "ex-MxxxxBxx" refers to past employment only. Flintnova is independent; MxxxxBxx does not endorse this service.

How it works

Free audit first. No lock-in.

A simple path from "is this worth it?" to measurable downloads — at your pace.

01

Free audit

Send us your store URL. We send back a one-page audit of where your listing is leaking downloads in Japanese — written by a human.

Free
02

Fixed-price sprint

Like the audit? We optimize your listing for one or more markets at a fixed price. No retainer, no contract.

Fixed price
03

Optional upkeep

Keep listings fresh as you ship — new screenshots, seasonal copy, keyword tuning. Only if you want it.

Optional
04

Measured

We use Apple's Product Page Optimization to A/B test the change, so the lift is something you can see — not a promise.

A/B Testing
Proof

Before & after, on the page.

An illustrative example of the gap we close — and the strongest proof of all: the page you're reading.

Before — English-only listing
Title
FocusFlow: To-Do & Habits
Subtitle
Get things done, every day
Japanese search visibility
Near-zero for タスク管理 / 習慣 / やることリスト
After — native Japanese listing
Title
FocusFlow | タスク管理&習慣化アプリ
Subtitle
毎日のやることを、続く習慣に
Japanese search visibility
Ranks for the keywords Japanese users actually type

Illustrative example with an invented app — shown to demonstrate the method, not a real client.

Free audit

See what your Japanese listing is missing.

Drop your store URL and email. We'll send back a free, human-written one-page audit — no bot, no obligation.

Or just email eric@flintnova.com with your store link.