Comparison

メモリ電卓 vs Rub Memo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

メモリ電卓

Features
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「普通の電卓だと、さっきの数字を忘れてしまう…」 「いくつもの計算結果をメモしながら合計したい」 そんな不便を解消するために生まれたのが、この『メモリ電卓』です。 計算結果を最大10個まで「SET(保存)」でき、いつでも呼び出せる独自のメモリエリアを搭載。 お買い物、家計簿、仕事の集計、確定申告、資産運用の利回り計算など、複数の数字を扱うすべてのシーンを強力にサポートします。 【メモリ電卓の主な特徴】 1. 複数の数字を「記憶」できる 画面下部のメモリスロットに、計算結果をワンタップで保存。 保存した数字を再度メイン画面に呼び出すのも一瞬です。 2. 保存した値の「合計・平均・最大・最小」を自動算出 チェックを入れたスロットの数字を自動で集計します。 バラバラに計算した商品の合計金額を出したり、データの平均値を確認するのに最適です。 3. 計算の「式」が見える安心感 入力中の数式がディスプレイ上部に表示されるため、どこまで打ったか、入力ミスがないかを常に確認しながら計算を進められます。 4. ワンタップでコピー&スマートな桁区切り ディスプレイ部分をタップするだけで、計算結果をクリップボードにコピー(カンマは自動除去)。他のアプリへの貼り付けもスムーズです。 5. 端末に合わせた「有効桁数」の自動最適化 お使いのデバイスの画面幅に合わせて、最大18桁までの最適な表示桁数を自動設定。大きな数字もあふれることなく正確に表示します。 【こんなシーンで便利です】 スーパーでの買い物: 商品ごとの価格を保存して、最後にまとめて合計。 家計簿・確定申告: 領収書の金額を次々とスロットに入れて集計。 お仕事の事務作業: 複数の伝票の合計や、データの平均値算出に。 投資・資産管理: 配当金や利回りのシミュレーション結果を比較・保存。

About

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.

Highlights
  • 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
Features
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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.

Screenshots

メモリ電卓3 screens
Rub Memo4 screens

Verdict

The call

The clearest difference is in-app purchases: Rub Memo at none against メモリ電卓's 1. Rub Memo also leads on ads (none vs shown). メモリ電卓's advantage is device support (3 vs 1). On price, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. メモリ電卓 sells 1 one-off in-app purchase. Rub Memo asks for nothing beyond the download.

UpkeepUpdate frequency

メモリ電卓 ships an update every 5 days, Rub Memo every 6 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 5 level
メモリ電卓 versus Rub Memo: the parameters behind the verdict, then further details
Parameterメモリ電卓Rub Memo
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 5 days — betterEvery 6 days
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size23 MB14 MB
Age rating4+4+
DeveloperITOTSUKAseiji honda

In-app purchases

1 purchases

メモリ電卓

One-time1
  • 広告の非表示$0.99
None

Rub Memo

No in-app purchases

Questions

Is メモリ電卓 free?
メモリ電卓 is free to download, with in-app purchases available.
Is Rub Memo free?
Rub Memo is free to download, with no in-app purchases.
Do メモリ電卓 or Rub Memo have ads?
メモリ電卓 shows ads; Rub Memo does not.
Which is updated more often, メモリ電卓 or Rub Memo?
メモリ電卓 ships an update every 5 days, and Rub Memo every 6 days. Most recently, メモリ電卓 was updated on October 24, 2026 and Rub Memo on October 24, 2026.

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