Comparison

React用語ドリル vs Jishin Sensei

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

React用語ドリル

Features
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React用語ドリルは、Reactの基本概念や専門用語を短時間で効率よく学べる学習アプリです。 基礎を覚え、クイズで理解度を確認。 間違えた問題を繰り返し復習できるので、苦手分野を克服できます。 学習履歴で進捗を把握し、継続的な学習をサポートします。 主な機能: - 用語を確認 - お気に入り機能で重要な用語を整理 対象ユーザー: - Reactを学び始めた初心者 - 用語や概念を復習したい開発者 - 通勤・休憩のスキマ時間で学習したい方

About

Jishin Sensei

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"What do you do when the ground shakes?" Learn it one question a day — and carry the rest with you: communication cards to set up before you land, and an emergency guide that opens with no signal. In English, Japanese, Korean, and Simplified and Traditional Chinese. All of it free. For people visiting Japan, and people living here. Jishin Sensei ("Earthquake Teacher") turns Japan's earthquake wisdom into a daily habit. Every day, Namazu Sensei — the legendary catfish of Japanese earthquake folklore — asks you one real-life scenario question: What would you do? And if the ground ever shakes for real, the emergency numbers, the what-to-do-where guide and the cards you show people are already on your phone, and they work offline. PREPARE TAB — SET UP BEFORE YOU LAND • Communication cards: "Is there a tsunami risk here?", "There are things I can't eat" — the lines you are likely to need, in large Japanese, read aloud at one tap. Tap what happened to build the sentence, and the other person answers on the card: they tap a tile, type, or draw. In the Japanese UI they turn into cards for helping a foreign visitor, in English, Korean or Chinese; food and blood type become boards to point at • My health card: allergies, diet, blood type and medication, shown in Japanese when it matters. Stored only on your phone (iOS Keychain). Save it as an image for your lock screen • My trip card: where you stay, your flight home, who you travel with, who to call — set once, shown in Japanese, and filled into the cards for you. Saves straight to Photos • Signs and notices: a mini-dictionary of the Japanese on walls and screens — 断水, 炊き出し, 運転見合わせ, 緊急避難場所. Paste text from a photo or type in English to search; it reads aloud too • Destinations: Tokyo, Osaka, Kyoto, Hokkaido, Okinawa, Fukuoka, Nagoya, Hiroshima, Kanazawa — each area's official disaster app where there is one, multilingual page and tsunami note • Install before you land: Safety tips, the official app supervised by the Japan Tourism Agency EMERGENCY TAB — WORKS OFFLINE • "Feeling an earthquake?" — what to do while it shakes, right after, and in the hours that follow • "Where are you right now?" — the same guidance sorted by place: hotel, elevator, underground, coast • Japan's emergency numbers (110, 119, 118), the #7119 medical advice line with numbers you can actually dial, the Disaster Emergency Message Dial (171) guide, and the 24/7 multilingual Japan Visitor Hotline • One tap to your health card, trip card, sign dictionary and communication cards DAILY QUIZ • One scenario question every day — hotels, trains, onsen, coastlines • Instant explanations with official sources (JMA, JNTO, and more) • Streaks and stats; share today's result in one tap • Answer at your own pace — no time pressure (the clock only runs in the optional Challenge mode) • The whole deck is open: review any of the 68 questions, run Study Mode (or just the ones you missed), or take the 10-question Challenge 68 QUESTIONS, WITH SOURCES • 68 scenario questions across five categories: Basics, Action, Communication, Information, Survival • Every answer links to its source — mostly Japanese public agencies • A link to hear the real phone alert tone, on a mobile carrier's page, before you ever need it • Fun facts along the way: why IS the teacher a catfish? • Earn category badges — and a shareable Certificate of Completion from Namazu Sensei FREE — ALL OF IT Every question, Study Mode, Challenge, the Prepare tab and the Emergency tab: free, for everyone. If the sensei has earned a snack, there is a tip jar in Settings. Built for travelers, exchange students, people living in Japan, and Japan fans everywhere. Earthquake know-how — a charm for your trip, and for your days in Japan. Not affiliated with, or endorsed by, the public bodies named as sources. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sukunabicco.github.io/jishin-sensei/privacy.html

Screenshots

React用語ドリル3 screens
Jishin Sensei4 screens

Verdict

The call

The clearest difference is in-app purchases: React用語ドリル at none against Jishin Sensei's 1. On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Jishin Sensei sells 1 one-off in-app purchase. React用語ドリル asks for nothing beyond the download.

Scorecard1 real difference · 5 level
React用語ドリル versus Jishin Sensei: the parameters behind the verdict, then further details
ParameterReact用語ドリルJishin Sensei
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size82 MB88 MB
Age rating4+4+
DeveloperHiroyuki ShimadaMakoto Katano

In-app purchases

None

React用語ドリル

No in-app purchases

1 purchases

Jishin Sensei

One-time1
  • Supporter (Lifetime)$0.99

Questions

Is React用語ドリル free?
React用語ドリル is free to download, with no in-app purchases.
Is Jishin Sensei free?
Jishin Sensei is free to download, with in-app purchases available.
Do React用語ドリル or Jishin Sensei have ads?
Neither React用語ドリル nor Jishin Sensei shows ads.

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