文字は何色？（らくらく脳トレ！シリーズ） vs RoomEight
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
文字は何色？（らくらく脳トレ！シリーズ）
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らくらく脳トレ！シリーズの「文字は何色？」です。 問題の文字が何色なのか、表示される色のリストから選んで答えるアプリです。 らくらく脳トレシリーズは、短い時間で頭の体操ができます。 1分間でどれだけ問題を解答できるか、レッツチャレンジ！ ランキングで競争したり、毎日の成績をグラフで確認できます。 伝言板でユーザー同士の交流も可能です。
RoomEight
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Standard (Recommended) RoomEight is a tense observation game where a single mistake sends you back to the beginning. Start in Room 0 and memorize every detail. Move forward and decide: ・If the room is completely normal, tap NEXT. ・If you notice even one anomaly, tap BACK. Choose correctly and you advance. Choose wrong and you return to Room 0. The rules are simple, but your eyes will start to doubt what you saw. Features ・Simple two-button gameplay: NEXT / BACK ・A psychological, minimalist horror atmosphere ・Anomalies ranging from obvious to barely noticeable ・Progression that rewards attention and memory ・Collect achievements and badges as you improve Can you keep your focus, trust your judgment, and reach Room 8?
Screenshots
Verdict
The clearest difference is ads: 文字は何色？（らくらく脳トレ！シリーズ） at none against RoomEight's shown. 文字は何色？（らくらく脳トレ！シリーズ） also leads on iOS requirement (6.1 vs 26.1). RoomEight's advantage is update cadence (fortnightly vs every 18 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 文字は何色？（らくらく脳トレ！シリーズ） sells 1 one-off in-app purchase and RoomEight sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
文字は何色？（らくらく脳トレ！シリーズ） ships an update every 18 months, RoomEight fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | 文字は何色？（らくらく脳トレ！シリーズ） | RoomEight |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 18 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.1 — better | 26.1 |
| Further details — not scored | ||
| Size | 32 MB | 1.2 GB |
| Age rating | 4+ | 12+ |
| Developer | UNI-TY INC. | Kawamata Koichiro |
In-app purchases
文字は何色？（らくらく脳トレ！シリーズ）
- 広告非表示$2.99
RoomEight
- Unlock Stage$0.99
- Secret Book$0.99
- Rewind Watch (Gold)$0.99
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- Secret Book x5$3.99
- Rewind Watch (Gold) x5$3.99
- Remove Ads$29.99
Questions
Is 文字は何色？（らくらく脳トレ！シリーズ） free?
Is RoomEight free?
Do 文字は何色？（らくらく脳トレ！シリーズ） or RoomEight have ads?
Which is updated more often, 文字は何色？（らくらく脳トレ！シリーズ） or RoomEight?
Other comparisons
