i vs ガス溶接技能講習 | 2026年対策問題
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
i
This app allows users to hide text in study materials using a filter, mimicking a red sheet for effective memorization. It supports photos and PDFs, enabling studying anytime, anywhere with just a smartphone.
- Hide text with red filter effect
- Study photos and PDFs
- Add check marks for progress
- Efficient study with navigation
- Use anytime, anywhere
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【Ranked #1 in the Education category (free)】 【Over 1 million downloads】 Featured in various media: ・Fuji TV "Minna no News (2017/2/9)": Red-sheet generation stunned! A revolution in memorization methods ・Benesse Manapla: Make high school life even more fun! 3 useful apps ・Nikkei Trendy Net "TODA Satoru’s Deep-Dive Report on Gadgets": How working adults use iPad and handwriting apps for learning i-Memorization Sheet is an app for memorization study that hides words, sentences, dates, etc. using a filter so you can study them. The app uses image analysis to reproduce the same effect as using a real red filter. Therefore, red text in reference books can be hidden simply by photographing it. You can also import entire reference books by converting them to PDF. With just an iPhone, you can study anytime, anywhere. 【Benefits of i-Memorization Sheet】 - Study anytime, anywhere—e.g., easily memorize with one hand on the train. - Carry as many pages as you want just by bringing your smartphone. - Disappears better than real red sheets. All reddish colors are hidden. Green is fine if it's a fluorescent highlighter. - You can add check marks anywhere. Double-tap where you want to place a mark. There is also a function to jump to the next check mark, making studying very efficient. 【Supported materials】 - Photos and PDFs can be used. 【Pricing】 You can use the app for free for up to 10 pages in total. If you want to use more files/pages, please purchase an add-on. Ads are displayed, but purchasing the add-on can disable them.
ガス溶接技能講習 | 2026年対策問題
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「ガス溶接技能講習、これ一つで」 ガス溶接技能講習の対策に必要な知識をオリジナル600問で学べる買い切り型の学習アプリです。 装置の構成、ガスや火炎の性質、点火・消火、点検、異常時対応、関係法令を分野別に整理しています。 正解・不正解それぞれの理由を確認できるため、現場で混同しやすい判断を理解しながら進められます。 収録内容: ・ガス溶接技能講習の最新オリジナル問題600問 ・分野別演習 ・ランダム出題 ・模擬試験 ・間違えた問題の見直し ・お気に入り問題 ・選択肢ごとの詳しい解説 ・オフライン利用対応 ・広告なし、追加課金なし 本アプリは、ガス溶接技能講習の学習補助を目的とした非公式アプリです。
Screenshots
Verdict
The clearest difference is price: i at Free against ガス溶接技能講習 | 2026年対策問題's $1.99. ガス溶接技能講習 | 2026年対策問題's advantage is in-app purchases (none vs 6) and ads (none vs shown). On 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
i is free to download; ガス溶接技能講習 | 2026年対策問題 costs $1.99 up front. i sells 6 one-off in-app purchases. ガス溶接技能講習 | 2026年対策問題 asks for nothing beyond the download.
| Parameter | i | ガス溶接技能講習 | 2026年対策問題 |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.2 (10 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 6 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 67 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | BrainApp LLC | Masaki Kobayashi |
In-app purchases
i
- imc00010$0.99
- imc00020$0.99
- i-Mem-Contents imc00030$0.99
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- i-Mem-Contents imc00040$0.99
- i-Mem-Contents imc00010$0.99
- Pro licence(campaign)$5.99
ガス溶接技能講習 | 2026年対策問題
No in-app purchases








