KG vs Math Duel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KG
This app is exclusively for students attending Keiyo Gakuin. It allows users to review lesson content and assignments from home if they miss or are late for a class. Access requires a valid ID and password.
- Review missed or late lessons
- Access assignments
- Home-based learning
- Requires student ID and password
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京葉学院に通塾している方専用のアプリです。利用にはIDとパスワードが必要です。 京葉学院の授業を欠席や遅刻した場合に、自宅で授業内容と課題の確認ができます。
Math Duel
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Race a friend head-to-head on the same iPhone. Sharpen your mental math with quick daily puzzles. Math Duel is a fast, competitive math workout. One phone, two players, split-screen. Or go solo through five modes and build a streak. WHAT YOU CAN DO • Duel a friend on one phone — split-screen, first to finish wins • Solo mode with adjustable difficulty and time limits • Endless — one mistake ends the run, chase your best streak • Time Attack — beat the clock, race against 60 or 120 seconds • Practice — your rules, no limits, ease into it • Track progress with streaks, accuracy, level-ups, and 22 medals • Daily Challenge — same 10 puzzles for everyone, share your time • Mistake Journal reveals your weak operations and drills them for you • Advanced stats with charts, trend lines, and per-operation accuracy • 6 accent colors to match your vibe DESIGNED FOR iOS 26 Built natively for iPhone with the new Liquid Glass aesthetic. Respects your system appearance — Light, Dark, or Auto. PRIVATE BY DESIGN No accounts. No ads. No tracking. Your history stays on device, with optional iCloud sync when you enable it. https://kashalot.dev/legal/math-duel-terms
Screenshots
Verdict
The clearest difference is in-app purchases: KG at none against Math Duel's 1. KG also leads on device support (3 vs 1) and iOS requirement (8.0 vs 26.0). On price and ads 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. Math Duel sells 1 one-off in-app purchase. KG asks for nothing beyond the download.
| Parameter | KG | Math Duel |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 8.3% of reviews | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 44 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Lines Co.,Ltd. | Rufat Babayev |
In-app purchases
KG
No in-app purchases
Math Duel
- Lifetime Access$9.99
