BookViewer vs *CalcMemo

BookViewerは、PDFファイルや画像フォルダ（ZIP）を読み込み、Kindleのようにスワイプで読めるリーダーアプリです。 【主な機能】 ■ 本棚（ライブラリ） インポートした本を一覧表示。サムネイルとタイトルで管理できます。 ■ ファイルの追加 「＋」ボタンから、PDF・ZIP・画像フォルダを選択して追加。 ■ 読書画面 ・左右スワイプでページめくり（Kindle風） ・画面タップでメニュー表示／非表示（閉じる・シークバー） ・下のスライダーで好きなページへジャンプ ・ページ数・進捗を表示 ■ 読み方の切り替え ・左開き：一般的な本のように左から右へ ・右開き：漫画のように右から左へ（ボタンで切り替え） ■ 画像の拡大 画像の本では、ピンチやダブルタップで拡大・縮小できます。 ■ 続きから読む 最後に開いたページを自動保存。次に開いたときは続きから読めます。 【対応形式】 ・PDF（.pdf） ・ZIP（中身の画像を連番で表示） ・画像フォルダ（画像が入ったフォルダをそのまま選択可能）

A calculator that remembers what your numbers were for. "Wait, what was this $385 for?" A normal calculator only keeps the answer. CalcMemo puts every calculation into a note, and lets you add a line of text in between. Quotes, budgets, splitting the bill, trip costs: come back later and you can still see what you calculated and why. ■ Made for • Quotes: unit price × quantity, with item names • Budgets: monthly bills in one folder, with a total • Splitting the bill: head count and rounding, all on record • Loans: compare monthly payments and total interest • Due dates: a monthly reminder on the 25th to pay rent ■ Calculator and notes on one screen Notes on top, calculator below. Every "=" adds the expression and answer to the note. Add headings and memos anywhere to keep it readable. Ans button recalls the last answer. ■ Scientific functions and statistics The f(x) tab adds trig, logs, powers, factorial, parentheses and memory (M+ M− MR MC). Select calculations in a note to see their sum, mean, max, min and standard deviation. ■ Money math built in • Loans (including balloon payments) • Loan prepayment simulator (Pro) • Savings plan (Pro) • Compound interest • Profit margin and discounts • Bill splitting with rounding • Sales tax • Date and day counting • Unit conversion (length, weight, temperature, area, volume, speed, fuel economy, time) Save any result to your note in one tap. ■ Reminders and widgets • Note reminders (Pro): once, daily, weekly or monthly. Tap the notification to open the note • Daily reminder: a nudge at the same time every day • Home Screen widgets (Pro): pinned notes, a folder, or one note's answer ■ Organized like a notes app Folders, pinning, grouping by date, reordering, moving between folders, and search across all notes. ■ iPad three-column layout Folders, notes and calculator on one screen, with a calculator you can float anywhere. ■ CalcMemo Pro (one-time purchase) Buy once, keep it forever. No subscription. • Unlimited folders and notes (free: 3 folders, 30 notes) • Lock folders with Face ID • Export notes as PDF or CSV • Savings and prepayment planners with charts • Home Screen widgets • Note reminders ■ Built to be trusted No ads, no account. Your notes stay on your device and are never uploaded. Back up and move to a new phone with JSON export. Available in 16 languages.