判別式電卓 vs Mena

【シンプルで使いやすい判別式計算アプリ - 判別式の計算をスマートに】 判別式の計算を素早く、簡単に行える電卓アプリが登場。 直感的なインターフェースと多機能なツールで、計算がこれまでになくスムーズになります。 ◎ 主な機能 使いやすいデザイン：シンプルで見やすいインターフェース。誰でも簡単に操作可能。 ルート・分数に対応：ルートから分数まであらゆる判別式に対応。 桁数調整：判別式Dの桁数を調整できます。四捨五入、切り捨て、切り上げに対応。 広告なし：広告に邪魔されることなく快適に使用可能。

Private visual notes for iPad. Build mind maps on an infinite canvas, study with FSRS flashcards, and sync through your private iCloud storage — no account required. Mena is an infinite canvas and visual second brain for iPad. Sketch ideas, build mind maps, embed media, and turn any board into spaced-repetition flashcards you actually review — no account required. Infinite canvas Pan, zoom, and draw with no page limits. Pastel sticky notes, shapes and connectors for mind maps and flowcharts, frames, tables, and 19 polygon shapes. Apple Pencil support with Draw to Shape — sketch a rough shape and Mena snaps it perfect. Every kind of content Drop anything onto your board: sticky notes, rich text and Markdown, code blocks with syntax highlighting, images, PDFs with full page navigation, video, audio files, and live maps. Record voice memos directly on the canvas — ink drawn during recording is seekable by playback time. Web embeds and URL preview cards keep sources right where you need them. Paper templates Note pages come in blank, lined, dotted, and grid. Change one page or every blank page at once, and choose auto, light, or dark paper independently of your system theme. The same page renders identically in the reader, sidebar, overview grid, library thumbnail, and exported PDF. Study with FSRS Turn any deck board into spaced-repetition flashcards. Mena uses FSRS — the most accurate scheduling algorithm available — to surface cards exactly when you need them. Again / Hard / Good / Easy grading with interval preview. Cloze deletion with one tap. Auto-generate flashcards from your notes on-device, no network needed. Study dashboard Track your streak, retention rate, and 14-day due forecast. See today's review count at a glance. Import and export decks Import any .apkg file directly. Mena imports your cards, scheduling data, embedded images, and cloze deletions. Export any deck back as .apkg. Slides & presentation Draw a frame around anything and it becomes a slide. Open the filmstrip panel, jump to any slide, present full-screen, or export the whole deck as a crisp PDF. 6 board types Board — infinite whiteboard. Note — vertical scroll page. Journal — one auto-created page per day. Atlas — a spatial map of all your boards. Document — PDFs, scans and images read page by page and marked up with Apple Pencil. Deck — FSRS study deck with review session. Home screen widgets 4 widget types for home screen and lock screen: Quick Capture (today's note in one tap), Board Preview (live thumbnail of any board), Today's Study (due count, streak, retention), and Deck (per-deck stats). All fully configurable. Share from anywhere A share extension catches text, links, images, PDFs, and videos from any other app — tap Share → Mena, pick a board, done. Private iCloud sync Every board, element, and attachment syncs across your Apple devices through your private iCloud CloudKit database. No Mena account. No third-party cloud server stores your Mena content. Flashcard generation runs on-device. Optional web embeds and Unsplash search connect only when you choose to use them. Mena fits how your brain actually works — capture, connect, and remember. Free & Pro Free covers 3 boards, 3 notes, 3 documents and 5 decks; journals and system boards are never limited. Mena Pro lifts every limit — Pro Monthly and Pro Yearly renew automatically, Pro Lifetime is a one-time purchase. iCloud sync is free on every plan. Pro Monthly and Pro Yearly start with a 1-week free trial for eligible new subscribers; the subscription is charged to your Apple Account when the trial ends unless you cancel at least 24 hours before. Prices appear in the app before you buy, and you can restore purchases at any time. Privacy Policy: https://apps.cihat.dev/mena/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/