フラッシュ英文法 vs JunJun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
フラッシュ英文法
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フラッシュ算式で学ぶ英語アプリです。 例: "This is a pen" → この文章が単語ごとに区切られて、フラッシュ暗算のように出題されます。 出た単語を記憶して、正しく入力欄に単語を入力して英文法を完成させてください 全レベルコンプリート目指して頑張ってください！
JunJun
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Your icon glows rainbow while you study, letting friends know you’re working hard! Share your study time, comments, workouts, walks, chores, music, and more. [Features] ・ Share your studying status with friends ・ Get a push notification when someone you follow starts studying. ・ Follow your friends ・ Post your study time and content ・ View your study time on graphs Terms of Use (EULA): https://junjun.oyajun.com/en/terms-of-service Privacy Policy: https://junjun.oyajun.com/en/privacy-policy
Screenshots
Verdict
The clearest difference is iOS requirement: フラッシュ英文法 at 17.0 against JunJun's 26.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.
| Parameter | フラッシュ英文法 | JunJun |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 37 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Nakakuki Masaya | Jun Oyamada |
In-app purchases
フラッシュ英文法
No in-app purchases
JunJun
No in-app purchases
