Most lists of Japanese social media apps rank them by users, and the ranking is real. LINE is used by 92.9% of people in Japan aged 13 to 79, YouTube by 81.5% and X by 44.7%, according to the government survey published in June 2026. A marketer at a foreign company has a narrower question, though: where will Japanese people hear about our product, ask about it and check it before they buy? User counts answer only the first part.
For the checking part we ran our own test. On October 9, 2026, we searched Google Japan for 21 product queries, fixed in advance, of the kind a foreign brand needs to be found for: recommendations, reviews and how-to. Of 201 top-ten results, 28 came from social or user-generated platforms, all on YouTube, the blogging platform note or the Q&A site Yahoo!知恵袋 (Yahoo! Chiebukuro). X, Instagram, TikTok, 5ch and Ameba blogs did not appear once. Comparison and ranking articles filled 79 of the 132 places on recommendation and review queries.
The short answer
Choose platforms by the job each does in Japan, not by user count. Almost everyone messages friends and familiar businesses on LINE, so a LINE official account is better for serving the customers you have than for finding new ones. Instagram, TikTok and X are where younger Japanese people spend time and search, but posts on them did not appear once in our Google test.
In our test, Japanese product searches on Google landed on articles. Recommendation and review queries returned mostly comparison and ranking pages; how-to queries returned mostly the provider’s own help pages. The social results that did appear were long-form: YouTube videos, articles on note and questions on Yahoo!知恵袋.
For most foreign products, we’d suggest this order of work: Japanese help pages on your own site, a place in the comparison articles for your category, YouTube if the product needs showing, one in-app platform matched to your buyers’ age, and LINE once you have customers to keep.
The Japanese social media apps people actually use
In our view, the most reliable source is the annual media-use survey by the research institute of Japan’s Ministry of Internal Affairs and Communications (総務省 情報通信政策研究所). The latest edition, published on June 26, 2026, surveyed 1,800 people aged 13 to 79 from December 1 to 7, 2025. It asks about seven services and counts anyone who views or posts as a user; the seventh, the video site ニコニコ動画 (Niconico), is used by 12.1%.
| Service | All ages | Teens | 20s | 30s | 40s | 50s | 60s | 70s |
|---|---|---|---|---|---|---|---|---|
| LINE | 92.9% | 96.4% | 97.7% | 97.9% | 96.6% | 95.6% | 92.0% | 77.8% |
| YouTube | 81.5% | 95.0% | 96.3% | 94.0% | 91.6% | 84.9% | 72.6% | 48.5% |
| 54.8% | 69.3% | 82.6% | 76.6% | 67.1% | 54.4% | 36.1% | 15.8% | |
| X | 44.7% | 56.4% | 73.4% | 67.7% | 57.0% | 40.2% | 24.8% | 10.8% |
| TikTok | 36.7% | 67.9% | 61.5% | 44.7% | 42.6% | 32.2% | 21.2% | 11.1% |
| 27.0% | 14.3% | 23.4% | 37.4% | 38.9% | 33.1% | 22.6% | 12.5% |
LINE and YouTube reach more than 90% of people under 50, so they tell you little about who your buyer is. Instagram, X and TikTok split sharply by age: Instagram reaches 82.6% of people in their twenties but 36.1% of people in their sixties, and TikTok is used by 67.9% of teenagers. Facebook is used by 27.0% overall and peaks at 38.9% among people in their forties. Instagram, X and TikTok all grew from the previous year’s survey, although X fell among people in their twenties (78.0% to 73.4%) and Instagram among teenagers (75.0% to 69.3%).
X’s own statements put Japan near the top of its markets: X Corp. Japan reported 67 million monthly users in Japan (2023 average), and in April 2024 X’s then chief executive said Japan had ranked first in posts, views, searches and active user minutes the previous quarter. We found both only in secondary reports, by the news site すまほん!! (Sumahon) and the agency IANS. TikTok says it had 49.5 million monthly users in Japan at the end of May 2026, including TikTok Lite.
LINE: the app almost everyone has, used to keep customers
LINE is run by LY Corporation (LINEヤフー), the Japanese company that also runs Yahoo! JAPAN. It passed 100 million monthly users in Japan at the end of December 2025. For a business, LINE means a LINE公式アカウント (LINE kōshiki account, “LINE official account”), which users add as a friend to receive its messages. Pricing is by message volume: a free plan with 200 messages a month, a Light plan at JPY 5,000 a month (before tax) with 5,000 messages, and a Standard plan at JPY 15,000 with 30,000 messages and paid messages beyond that.
An account reaches only people who have chosen to add it, so it suits coupons, reminders, order updates and support for customers who already know you. As a way to be found by people who have never heard of you, it usually does very little, which is where our guide to content marketing in Japan also puts it.
Who uses social media as a search engine in Japan
Searching inside social apps is common in Japan, and it is more common among younger people. Hakuhodo’s media research institute (博報堂 メディア環境研究所) asked 1,317 people aged 15 to 69, in January and February 2025, which services they use to look things up. Among those who search at all, 42.8% used X and 39.7% used Instagram, against 84.3% for Google and 66.9% for Yahoo!. Among people in their teens and twenties the gap narrows: Instagram 60.8%, X 60.1% and TikTok 45.6%, against 88.8% for Google. Among people in their fifties and sixties, X and Instagram were each used to search by about a quarter.
The same survey shows what each app is searched for. X stood out for trends, other people’s opinions and breaking news; Instagram for restaurants and for beauty and cosmetics; TikTok for trends. A cosmetics brand and a finance-software company need different plans.
Social search seems to sit beside the open web rather than replace it. Asked where they got shopping information most in the past month, more people in the ministry survey named specialist information sites, such as shopping, restaurant and travel sites (17.7%), than television (16.1%) or social media (13.1%).
Japanese forums, Q&A sites and blog platforms
Yahoo!知恵袋, whose name means “bag of wisdom,” is LY Corporation’s Q&A site. It launched in April 2004 and, as of April 3, 2024, had 52 million registered users, 280 million questions and more than 650 million answers. The questions are written in buyers’ own words, which makes it a free record of the objections in your category. Read it; do not plant answers in it.
note is a publishing platform for long posts by individuals and companies. It had 12.48 million members and 82.09 million published pieces at the end of May 2026. Ameba blog (アメブロ), run by CyberAgent, had passed 2.8 billion posts by August 2024, and many celebrities blog there. Hatena runs blogs and the bookmarking site はてなブックマーク (Hatena Bookmark).
5ちゃんねる (5ch) is a bulletin board of threads and replies, and ガールズちゃんねる (Girls Channel) calls itself a chat community by and for women. Neither publishes audience figures we could check. Both are places to listen for what people dislike about your product; posting there as a brand rarely helps.
What Google shows when Japanese people search for products
Usage figures say where people spend time, not where a buyer lands when checking a product. So we fixed a query list before looking at any results: ten categories a foreign company could sell in Japan (travel eSIM, VPN, web hosting, English-conversation apps, coffee makers, sunscreen, video-editing software, accounting software, cloud storage and wireless earbuds), with three queries each. One asks for recommendations (おすすめ, osusume), one for reviews (評判, hyōban, “reputation,” for services; 口コミ, kuchikomi, “word of mouth,” for goods) and one asks how to do the task the product serves (やり方, yarikata, “how to”).
We read the top ten Google Japan results for each query with the headline tool in Rakko Keyword, a Japanese keyword tool. The run stopped after 21 of the 30 queries when the tool credit on our account ran out; the nine missing were all six for cloud storage and wireless earbuds and three for the two software categories. No query was dropped or replaced after its results were seen. One query returned only two results and another returned one page twice, so the count is 201 results.
Results were sorted by rules set in advance: a fixed list of social and user-generated domains, third-party pages that rank or compare several products, the provider’s own site including its blog and help pages, and everything else, such as shop listings and app store pages.
| Query type | Queries | Results | Social and user-generated | Comparison and ranking pages | Provider’s own site | Other |
|---|---|---|---|---|---|---|
| Recommendation (おすすめ) | 8 | 80 | 11 | 51 | 14 | 4 |
| Review (評判, 口コミ) | 6 | 52 | 7 | 28 | 11 | 6 |
| How-to (やり方) | 7 | 69 | 10 | 1 | 39 | 19 |
| All | 21 | 201 | 28 | 80 | 64 | 29 |
| Platform | Results | Queries where it appeared | Times in the top three |
|---|---|---|---|
| YouTube | 13 | 12 of 21 | 1 |
| note | 10 | 10 of 21 | 6 |
| Yahoo!知恵袋 | 5 | 5 of 21 | 2 |
| X, Instagram, TikTok, 5ch, Ameba blog, Hatena, Reddit, Girls Channel, Facebook | 0 | 0 of 21 | 0 |
Recommendation and review searches mostly land on comparison articles
Of the 132 results for recommendation and review queries, 79 were comparison or ranking pages: the large product-ranking and price-comparison sites, a cosmetics review site, a business software review site, retailers’ buying guides and many smaller comparison sites. Even the note results here were articles: all seven note pages that appeared for these queries were personal reviews or recommendation lists rather than short posts, and two of them stated that they contained promotion. For a foreign product missing from these articles, a well-researched Japanese article about it is the kind of page these searches land on. That is what our sponsored features are: one article, labeled PR, on one of the Japanese sites we run.
How-to searches mostly go to the provider’s own pages
Of the 69 how-to results, 39 were the provider’s own help pages, manuals or posts. For eSIM setup, nine of the top ten were mobile carriers, eSIM providers and a handset maker. For moving a WordPress site, eight were hosting companies’ own guides and manuals. A foreign product without Japanese help pages is likely to leave these answers to a competitor.
Only three social platforms appear, and note ranks highest
YouTube appeared most widely, in 12 of 21 queries, but usually between fourth and tenth place; it reached the top once, with a one-minute coffee-brewing video. note appeared less often but ranked higher: six of its ten results were in the top three, four of them at number one, including for VPN 評判 and レンタルサーバー おすすめ (recommended web hosting). Yahoo!知恵袋 appeared five times, as questions such as which eSIM to buy for a week abroad or which free video editor to use; one asked which of two named AI English-conversation apps was better.
The test has limits. It covers Google, not Yahoo! JAPAN’s results page (see search engines in Japan). It counts the ten web results the tool returns, not video carousels or other panels, and cannot see searches inside Instagram, TikTok or X. Twenty-one queries are a sample, not a census. For shops and services with a physical location, reviews also live on map listings, which we cover in local SEO in Japan.
Where we think a foreign product should be present
Put the usage data and the test together and each platform has a job.
| Platform | What it does in Japan | What a foreign product should do |
|---|---|---|
| Your own site, in Japanese | Answers how-to searches | Japanese help, setup and explainer pages first |
| Comparison and ranking articles | Answer おすすめ and 評判 searches | Be in them, with accurate Japanese facts and prices |
| YouTube | Used by 81.5%; shows up in Google | Japanese demos and reviews if the product needs showing |
| note | Long posts by individuals; ranked high in our test | Know who reviews your category there |
| Instagram, TikTok | In-app search for restaurants, beauty and trends; strongest under 30 | Mainly for visual consumer products with young buyers |
| X | Trends, opinions, news; most used in the 20s and 30s | A Japanese-language account for news and support |
| LINE | Messaging with friends and known businesses | An official account once you have Japanese customers |
| Yahoo!知恵袋 | Questions in buyers’ own words | Read for objections; do not post planted answers |
| 5ch, Girls Channel | Discussion boards | Listen only |
| 27% overall, highest among people in their 30s and 40s | Low priority |
Our view differs from plans that start with a social account. Buyers checking a product on Google found help pages and comparison articles, so we’d put those first, with social accounts reinforcing what search introduced. The exception is a visual product for people under 30, where Instagram or TikTok may come first and the ministry’s age split should decide which.
Common questions
Three questions come up when foreign companies plan for Japan.
Do we need a LINE official account from day one?
Not for discovery. An official account reaches only people who have added it, so it earns its keep once you have Japanese customers to send updates, coupons or support messages to. The free plan allows 200 messages a month, which is enough to test it.
Can we pay Japanese creators to post about our product?
Yes, if the post is clearly an advertisement. Since October 1, 2023, advertising that consumers cannot recognize as advertising has been a violation of Japan’s Act against Unjustifiable Premiums and Misleading Representations (景品表示法), and the Consumer Affairs Agency applies this to social media posts and reviews. The rule targets the advertiser, not the creator, so the responsibility for labeling sits with you.
We sell B2B software. Does any of this apply?
Mostly the search part. In our test, the accounting software query returned a business software review site, four software makers’ own pages and other comparison pages, with one YouTube video as the only social result. That review site appeared in four of our 21 queries. We cover those review sites in B2B SaaS and comparison media in Japan.
Working on Japan?
Nihongo Search is published by Amanaut, Inc., a small Japanese SEO and content company in Tokyo working with companies entering the Japanese market. For where demand for consumer products sits beyond social media, see consumer brands in Japan. More about how we work.
Sources
The search test is our own. Everything else comes from the sources below.
- Nihongo Search, social and search test: 21 Google Japan queries fixed in advance (30 planned), top ten results read with Rakko Keyword’s headline tool, October 9, 2026; 201 results classified
- 総務省 情報通信政策研究所, 令和7年度 情報通信メディアの利用時間と情報行動に関する調査報告書 (Japanese), June 26, 2026; tables 5-1-1 and 6-2 in the full report
- 博報堂 メディア環境研究所, 検索サービス利用実態意識調査 (Japanese), March 17, 2025
- LY Corporation, press release on LINE passing 100 million monthly users in Japan (Japanese), January 29, 2026
- LINEヤフー for Business, LINE official account plans and pricing (Japanese), checked October 9, 2026
- LY Corporation, press release on Yahoo!知恵袋’s 20th anniversary (Japanese), April 3, 2024
- TikTok for Business Japan, blog post on TikTok Shop’s first year (Japanese), June 22, 2026
- すまほん!!, report on Twitter Japan’s renaming to X Corp. Japan (Japanese), November 23, 2024
- IANS via DT Next, Japan leads on X across user metrics, April 15, 2024
- note Inc., company notice with member and content figures (Japanese), August 6, 2026
- CyberAgent, press release on Ameba’s 20th anniversary (Japanese), September 13, 2024
- 株式会社ジェイスクエアード, company site describing ガールズちゃんねる (Japanese), checked October 9, 2026
- Consumer Affairs Agency, stealth marketing under the Act against Unjustifiable Premiums and Misleading Representations from October 1, 2023 (Japanese)
Last reviewed: October 2026.
