CAL_ vs DRA AR
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_.
DRA AR
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・対応ファイル形式：mps、mpz ・対応OS：iOS/iPadOS15.0以降 ・対応2D要素：線分、円、円弧、楕円、楕円弧、ポリライン、文字 ・対応3D要素：ポリライン
Screenshots
Verdict
The clearest difference is update cadence: CAL_ at every 4 days against DRA AR's every 6 months. CAL_ also leads on iOS requirement (12.0 vs 15.0). 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, DRA AR every 6 months. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.
| Parameter | CAL_ | DRA AR |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | SQUAIR Inc. | 株式会社建築ピボット |
In-app purchases
CAL_
No in-app purchases
DRA AR
No in-app purchases
