LFunCalc vs DRA AR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LFunCalc
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LFunCalc is a function calculator that formulas are displayed and entered as a list. Just after a formula is entered, the result is displayed without tapping enter key. A formula name is assigned to each input line and can be referenced as a variable in the following formulas. When a formula is changed, the value of the other formula referencing it is updated too. LFunCalc is also useful as a tool of parameter study. Note) LFunCalc is not a spreadsheet application.
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 iOS requirement: LFunCalc at 13.2 against DRA AR's 15.0. 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.
LFunCalc ships an update every 5 months, DRA AR every 6 months. The most recent releases landed on September 28, 2026 and October 14, 2026 respectively.
| Parameter | LFunCalc | DRA AR |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 46 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | NOBORU IMAI | 株式会社建築ピボット |
In-app purchases
LFunCalc
No in-app purchases
DRA AR
No in-app purchases
