星川サラ🌟Sara Hoshikawa engagement report
@Sara_Hoshikawa - 949K followers on X
Measured over 34 original posts from a 30-day window, last computed on August 20, 2026.
Engagement
A typical post picks up 8.3K interactions against 949K followers, an engagement rate of 0.872%. Measured over 34 original posts, its engagement rate beats 94% of 1,003 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 213K times each, and 3.88% of those impressions turn into an interaction. That is about 22.5% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.9 posts a day over the last 30 days, though only 43% of days saw any activity at all. Most posts go out around 05:00 UTC, and Sunday is the busiest day of the week. Of the 34 posts sampled, 59% carry an image or video and 59% link out. The account's strongest tracked post pulled 130K interactions, about 16x its own typical post. Recurring topics include #にじ甲2026, #vtuber, #にじ甲2026_day3.
Measured over 34 original posts from a 30-day window, last computed on August 20, 2026. Recurring tags: #にじ甲2026, #vtuber, #にじ甲2026_day3.
Compared with accounts its own size
星川サラ🌟Sara Hoshikawa's engagement rate beats 94% of the tracked X accounts closest to it in follower count (1,003 accounts, accounts of similar size (decile 5 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.
On engagement per impression rather than per follower it beats 84% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.
Where this sits in the catalog
At 0.872%, 星川サラ🌟Sara Hoshikawa sits above the 75th percentile of the 9,981 accounts in this comparison. That places it in the top 25% band, which runs 0.325% to 2.60%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.001% |
| 25th percentile | 0.007% |
| 50th percentile | 0.047% |
| 75th percentile | 0.325% |
| 90th percentile | 2.60% |
| 99th percentile | 357.9% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 05:00 UTC, and Sunday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | 0% | 15K |
| 01:00 UTC | +4% | 15K |
| 02:00 UTC | -1% | 14K |
| 03:00 UTC | -2% | 15K |
| 04:00 UTC | -5% | 12K |
| 05:00 UTC | -5% | 12K |
| 06:00 UTC | -7% | 13K |
| 07:00 UTC | -6% | 14K |
| 08:00 UTC | -7% | 17K |
| 09:00 UTC | -2% | 19K |
| 10:00 UTC | -2% | 20K |
| 11:00 UTC | -2% | 22K |
| 12:00 UTC | -1% | 24K |
| 13:00 UTC | +1% | 27K |
| 14:00 UTC | -2% | 29K |
| 15:00 UTC | -1% | 30K |
| 16:00 UTC | -1% | 30K |
| 17:00 UTC | -1% | 28K |
| 18:00 UTC | +1% | 25K |
| 19:00 UTC | 0% | 24K |
| 20:00 UTC | 0% | 22K |
| 21:00 UTC | +1% | 19K |
| 22:00 UTC | +1% | 17K |
| 23:00 UTC | +1% | 15K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +8% | 59K |
| Monday | +8% | 72K |
| Tuesday | +1% | 94K |
| Wednesday | -4% | 78K |
| Thursday | -3% | 71K |
| Friday | -5% | 73K |
| Saturday | +2% | 64K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 59% of posts | +79% | +73% to +85% | 5.8K |
| Outbound link | 59% of posts | -49% | -50% to -47% | 6.1K |
| Typical length | - | -7% | -8% to -5% | 9.0K |
- 59% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 79% above the same accounts' other posts.
- 59% of its posts carry a link off X. Across the catalog, posts with an outbound link run 49% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 120 characters, which falls in the 80 - 180 characters band. Across the catalog, posts of 80 to 180 characters run 7% below the same accounts' other posts.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Aug 11, 202616x their median
【⚾️にじさんじ甲子園2026 本戦終了⚾️】 今年もたくさんのご声援ありがとうございました! 本戦 Day3のアーカイブはこちら! https://t.co/aREzfoe7Xi #にじ甲2026 #にじ甲2026_Day3 https://t.co/kxJi8Swq8H
- Aug 9, 20269.1x their median
星川監督へ! @Sara_Hoshikawa 流星ミルキーウェイ学園 野球部一同より #にじ甲2026 https://t.co/ba9s8IwpkV
- Aug 7, 20265.1x their median
新衣装お披露目ありがとーっ🎀 パーカーワンピでした│ ̂⩊፟ ̂𐅀♡ これ着ていっぱいゲームしたいな🎮 他衣装との組み合わせも最高だから見て!! いっぱい可愛いって言ってー!!! #星川サラ誕生日2026 https://t.co/cRILDpTbvC
- Aug 12, 20263.7x their median
【#にじ甲2026 エキシビション & ファン投票⚾️】 「にじさんじ甲子園2026」延長戦! 毎年恒例エキシビションマッチを8/30(日)17時より開催!! 主催・監督・ファン投票によるB9 & MVPを発表!お楽しみに! ⚾️B9 & MVP投票はこちらから!⚾️ https://t.co/aVQ87Zx0If ※アンケート期間:~8/24(月)18:00
- Aug 11, 20263.1x their median
にじ甲2026ありがとうございました! 1から勉強して全力で取り組んだ1ヶ月。 結果は思うように上手くいかなくてマーージで悔しいけど、ここまで悔しいって思えるくらい一生懸命になれたことが何より幸せだ!!! 流星MWの皆と野球ができて嬉しかった! 応援してくれた皆、本当にありがとう。 ほんっっっとに楽しかったよ!! 最高に煌めく夏をありがとう!!!! #にじ甲2026
- Jul 19, 20262.7x their median
#サラ星図 🛁 https://t.co/5zkfc0ndS8
- Jul 21, 20262.5x their median
https://t.co/eyPJ1PtDgU
- Aug 8, 20262.4x their median
【#にじ甲2026 Day1 まもなくプレイボール⚾️】 『にじさんじ甲子園2026 本戦 Day1』 このあと≪ 15時 ≫より配信開始!! 応援や感想は【#にじ甲2026_Day1】でポスト! 📣8/8(土)15:00~ プレイボール!📣 https://t.co/UHWUGnh4Ks https://t.co/PWVDWMqBgF
- Aug 7, 20262.0x their median
- - - - - - - - - - ꒰ ⪩⪨ ꒱- - - - - - - - - - - 🌟🎀新オリジナル曲🎀🌟 今日19:00公開 ⸝⸝ ⭑ 【MV】 ちゅいんくる・ぷりんせす https://t.co/QGfp52xPnd 作詞:Medansy(TRIFRONTIER)、星川サラ 作曲:Medansy(TRIFRONTIER) MV : studio Lit. - - - - - - - - - - ꒰ ⪩⪨ ꒱ - - - - - - - - - - -
- Aug 11, 20261.9x their median
【#にじ甲2026 Day3 まもなくプレイボール⚾️】 『にじさんじ甲子園2026 本戦 Day3』 このあと≪ 15時 ≫より配信開始!! 応援や感想は【#にじ甲2026_Day3】でポスト! 📣8/11(火・祝)15:00~ プレイボール!📣 https://t.co/aREzfoe7Xi https://t.co/aXWvBkupVQ
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 8.3K interactions against 949K followers, an engagement rate of 0.872%. Measured over 34 original posts, its engagement rate beats 94% of 1,003 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 213K times each, and 3.88% of those impressions turn into an interaction. That is about 22.5% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.9 posts a day over the last 30 days, though only 43% of days saw any activity at all. Most posts go out around 05:00 UTC, and Sunday is the busiest day of the week. Of the 34 posts sampled, 59% carry an image or video and 59% link out. The account's strongest tracked post pulled 130K interactions, about 16x its own typical post. Recurring topics include #にじ甲2026, #vtuber, #にじ甲2026_day3.
- What is 星川サラ🌟Sara Hoshikawa's engagement rate on X?
- 星川サラ🌟Sara Hoshikawa (@Sara_Hoshikawa) has an engagement rate of 0.872%, based on the median interactions across 34 original posts from the last 30 days against 948,811 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.872%, 星川サラ🌟Sara Hoshikawa sits above the 75th percentile of the 9,981 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @Sara_Hoshikawa have real engagement?
- Its engagement rate beats 94% of the tracked X accounts closest to it in follower count (1,003 accounts), which puts it in the top 10% for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
- When does @Sara_Hoshikawa post?
- Most posts go out around 05:00 UTC, and Sunday is its busiest day, at roughly 1.87 posts per day across the measured window.