ビジネス電卓 vs AIメールくん
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ビジネス電卓
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【What is Business Calculator】 It is a major feature that it supports"profit and loss" necessary for estimate creation. If you enter two values of cost, selling price, and profit, you can find the remaining one value. In addition to this, it supports memory calculation, tax inclusion / tax exclusion display, square root, percentage calculation. You can view the history of all calculation formulas including profit and loss. You can also freely rearrange the key positions and select color patterns. 【Settable items】 You can make settings for the following items. -Display mode 100÷3=33.333…(abbreviated display) 100÷3=0.33333E02(E notation) -Number of decimal places to display 0~13 -Tax rate -Rounding Round off Round up Round down 【function】 -Layout selection ※Selectable from 2 key layouts -Vibration ON / OFF at key touch -Sleep ON / OFF on calculation screen 【Key operation】 ・"MRC" key Press once to read from memory, press twice to clear memory ・C key once to Clear only the current state, press twice to clear all. ※For details of profit and loss calculation, please see the help in the application. Made in Japan.
AIメールくん
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ビジネスメールがなかなか書き終わらないことはありませんか？ AIメールくんを使えば、ビジネスメールを簡単に完成させることができます！ ◆機能◆ ・ビジネスメールで伝えたい主旨を入力すると、メールが完成する ◆使い方◆ 1. メールで伝えたい主旨を入力する 3. 完成したビジネスメールをコピーする 5. メールアプリで送信する ◆こんな方にオススメ◆ ・ビジネスメールで伝えたいことはあるのに、書き終わらない人 ・メールを書く時間は、伝えたいことを考えるのに集中したい人 ・メールを書く以外の仕事に時間を使いたい人 ビジネスメールは「AIメールくん」で簡単に完成させよう！
Screenshots
Verdict
The clearest difference is ads: AIメールくん at none against ビジネス電卓's shown. AIメールくん also leads on update cadence (every 9 days vs every 24 months). ビジネス電卓's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price 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. ビジネス電卓 sells 1 in-app purchase, starting at $0.99 per month and AIメールくん sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
ビジネス電卓 ships an update every 24 months, AIメールくん every 9 days. Both last shipped on November 3, 2026.
| Parameter | ビジネス電卓 | AIメールくん |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 24 months | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 20 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | TAS Company Limited. | AppEngine |
In-app purchases
ビジネス電卓
- Remove ads for 1 month$0.991 Month
AIメールくん
- Premium3 Days trial$6.997 Days
