変数電卓+ vs Markdown Editor & Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
変数電卓+
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変数電卓+は、従来の電卓機能に加え、変数機能を持つ計算機アプリです。 【最大の特徴:変数機能】 計算結果を変数として保存し、後の計算で自由に呼び出せる画期的な機能を搭載。 例えば、消費税率を「tax」として保存すれば、いつでも「1000 × tax」のように使えます。 変数には分かりやすいラベルも付けられるので、「月収」「家賃」「光熱費」など、用途に応じた管理が可能です。 【プロフェッショナル仕様の計算機能】 ◆ 基本計算 • 四則演算、パーセント計算、括弧を使った複雑な式 • リアルタイムで計算結果を表示 • 15桁の高精度計算 ◆ 科学計算(関数モード) • 三角関数:sin, cos, tan とその逆関数 • 対数・指数:log, ln, e^x • その他:平方根、べき乗、階乗 • 数学定数:π(円周率)、e(自然対数の底) • メモリ機能:M+, M-, MR, MC 【充実の補助機能】 ◆ 計算履歴(最大100件) • すべての計算を自動記録 • タップで式を再利用 • 日時表示で管理しやすい ◆ お気に入り • よく使う計算式を保存 • ワンタップで呼び出し • カスタム名で整理 ◆ 単位変換(7カテゴリー) • 長さ:メートル、キロメートル、インチ、フィートなど • 重さ:グラム、キログラム、ポンド、オンスなど • 温度:摂氏、華氏、ケルビン • 面積:平方メートル、ヘクタール、エーカーなど • 体積:リットル、ガロン、カップなど • 時間:秒、分、時間、日、週、月、年 • 速度:m/s、km/h、mph ◆ 編集機能 • 計算式を直接編集可能 • カーソル移動で任意の位置を修正 • 計算後も式に戻って編集できる ◆ カスタマイズ • ライト/ダークテーマ • 触覚フィードバック • 多言語対応(日本語・英語)
Markdown Editor & Reader
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Open, read, edit and share Markdown — beautifully. MD Preview is an all-in-one Markdown workspace for iPhone and iPad. Open Markdown files from Files, iCloud Drive, Mail or your favorite apps. Read beautifully rendered documents, edit when needed, browse GitHub READMEs, and export polished documents to PDF, HTML or DOC — all completely offline. Whether you're reviewing a README, editing technical documentation, writing notes, or preparing documents to share, MD Preview gives you everything you need in one clean, native experience. KEY FEATURES • Beautiful rendering — GitHub-flavored Markdown with proper typography, syntax-highlighted code blocks, tables, blockquotes and footnotes. • Two views, one tap — toggle between rendered preview and raw source mode. Source view supports text selection. • Table of Contents — auto-generated from headings; tap to jump anywhere in long documents. • 9 hand-crafted themes — Parchment (warm cream), Eclipse (deep navy), Woodland (mossy green), Blossom (soft pink), Tide (deep sea), Iris (vivid violet), Sunlit (cream amber), Nocturne (inky violet), Glacier (frosted slate). Light and dark variants. • Folders & recents — organize your markdown files into custom folders with icons and colors. Recently opened files reappear on home for one-tap access. • Smart export — generate a print-ready PDF with your chosen theme baked in. Share the original file, or copy the markdown to clipboard. • Font controls — adjust reading size for tired eyes or small screens. • Fully offline — no servers, no tracking, no signup. Your files stay on your device. • Native iOS feel — built with SwiftUI for iPhone and iPad. Supports light/dark mode, dynamic type, and the share sheet. PERFECT FOR • Reading READMEs from GitHub or local repos • Reviewing technical specs and documentation • Reading novels and notes written in Markdown • Sharing rendered docs with non-technical teammates • Exporting handouts as PDFs from a phone PRIVATE BY DESIGN Your documents stay on your device. • No accounts • No cloud processing • No tracking • No analytics SDK • No telemetry Everything works offline. PRIVACY MD Preview does not collect, store, or transmit your files. Everything runs on-device. There is no analytics SDK, no telemetry, no account. You can manage or disable auto-renewal in your Account Settings after purchase. For more details, please refer to our privacy policy and terms of use. Privacy policy: https://sites.google.com/view/nguyendangnam-privacy-policy/home Term of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ — Open a .md file from Files, iCloud Drive, Mail or any sharing app — and start reading
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Verdict
The clearest difference is in-app purchases: 変数電卓+ at none against Markdown Editor & Reader's 1. 変数電卓+ also leads on update cadence (daily vs weekly) and iOS requirement (12.0 vs 16.0). On price, ads and device support 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. Markdown Editor & Reader sells 1 one-off in-app purchase. 変数電卓+ asks for nothing beyond the download.
変数電卓+ ships an update daily, Markdown Editor & Reader weekly. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.
| Parameter | 変数電卓+ | Markdown Editor & Reader |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 27 MB | 18 MB |
| Age rating | 4+ | 9+ |
| Developer | Takuya Nemoto | Dang Nam Nguyen |
In-app purchases
変数電卓+
No in-app purchases
Markdown Editor & Reader
- MD Preview Pro (Lifetime)$3.99
Questions
Is 変数電卓+ free?
Is Markdown Editor & Reader free?
Do 変数電卓+ or Markdown Editor & Reader have ads?
Which is updated more often, 変数電卓+ or Markdown Editor & Reader?
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