CAL_ vs ただの電卓
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CAL_
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CAL_ is the next evolution of calculators. Made especially for iPhone, it brings the venerable calculator to an all-new level. LOG FEATURE All of your calculations are logged, so you can refer to them at any time. Use the ANS key to bring up the most recent result from the log. You can toggle commas and decimal points, and also use a guide that shows you when your units are in the millions, billions, and beyond. CURRENCY CONVERSIONS Get real-time currency rates for up to three currencies at once. You can also see a graph of currency value fluctuations. UNIT CONVERSIONS Want to know how many Tokyo Domes there are to an acre? Or how many lbs make up a stone? It's right at your fingertips in CAL_.
ただの電卓
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iPhoneやiPadで使える。多目的な計算機です。 ※機能 機能は計算と多少の公式計算が出来ます。 銀行の金利の計算 消費税の計算 将来の貯金額の計算 株式配当率計算 比例式の計算 などの計算が数値を入力するだけで計算する事ができます。 計算画面広告なし 古い端末でも起動できます。
Screenshots
Verdict
The clearest difference is update cadence: CAL_ at every 4 days against ただの電卓's fortnightly. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
CAL_ ships an update every 4 days, ただの電卓 fortnightly. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.
| Parameter | CAL_ | ただの電卓 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (3 ratings) — better |
| Positive reviews | — | 70.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 9 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | SQUAIR Inc. | HIROKI HORIGUCHI |
In-app purchases
CAL_
No in-app purchases
ただの電卓
No in-app purchases
