Rub Memo vs 高機能な電卓
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rub Memo
This app allows you to erase text by rubbing your finger over it, mimicking the feel of erasing pencil on paper. It also offers a home screen widget for quick access, reordering paragraphs, and inserting various media like tables, checklists, and drawings.
- Erase text with finger rub
- Home screen widget for notes
- Reorder paragraphs by long-press and drop
- Insert tables, checklists, images, and drawings
- Full-text search with highlighted matches
- Lock notes with Face ID/Touch ID
- Export and share as PDF
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■ Erase with Your Finger Turn on “Eraser” in the toolbar, then trace over the text you want to remove. Erase one character at a time without selecting a range. Rewrite as easily as rubbing out pencil marks on paper. If you erase too much, tap “Undo” to bring it back. ■ Meet Your Walking Cat A pixel-art cat strolls around your note screen. Choose from Calico, Black, or Robot, and enjoy 38 animations, including walking, jumping, and relaxing. Tap the cat to make it move out of your way. You can also turn it off in Settings. ■ Home Screen Widget Check the last note you opened right from your Home Screen. Tap the widget to open that note instantly. ■ More Features • Touch and hold paragraphs to move and reorder them • Insert tables, checklists, images, and hand-drawn sketches • Use the eraser to remove inserted items, including tables and images • Search all your notes with matching text highlighted • Lock individual notes with Face ID / Touch ID • Export and share notes as PDFs • Switch between Japanese and English • Adjust text size, fonts, ruled lines, and eraser width ■ No Ads, No In-App Purchases, No Account Required The app does not collect your data. Your notes are stored on your device and are never sent to external servers by the app.
高機能な電卓
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高機能な電卓は、日常の四則演算から高度な関数計算まで、1つの画面で扱える電卓アプリです。シンプルな「基本電卓」と多機能な「関数電卓」を用途に応じて切り替えられます。 入力中の式と計算結果をリアルタイムで確認でき、確定した計算はテープ形式で画面に残ります。確定後は、数字を押すと新しい計算を開始し、演算子を押すと直前の結果から続けて計算できます。 主な機能は次のとおりです。 - 四則演算、百分率、符号反転 - 三角関数、対数、累乗、平方根、階乗 - 順列・組合せ、度分秒変換、座標変換 - 10進・16進・8進・2進の切り替え - DEG・RAD・GRADの角度単位 - AUTO・FIX・SCI・ENGの表示形式 - Shift/Altによる追加機能 - Ansとメモリ機能 - セッション単位の計算履歴 履歴・設定・メモリ・作業中の式は端末内に保存されるため、アプリを終了しても続きから再開できます。ACは現在の計算を消して新しいセッションを始めますが、保存済みの履歴は削除しません。
Screenshots
Verdict
The clearest difference is iOS requirement: Rub Memo at 16.0 against 高機能な電卓's 26.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Rub Memo ships an update every 6 days, 高機能な電卓 every 2 weeks. Both last shipped on October 31, 2026.
| Parameter | Rub Memo | 高機能な電卓 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 6 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 14 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | seiji honda | Koki Komatsu |
In-app purchases
Rub Memo
No in-app purchases
高機能な電卓
No in-app purchases









