Comparison

Triangle3 vs Flm∴S アイソメmaster

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

Head to head
About

Triangle3

This app provides advanced calculation tools for field work, specializing in right and unequal triangles. It supports complex shapes like cones, pipes, and screw wings, with AR visualization for floor plans. It also includes standard calculator functions and memory features.

Highlights
  • Right and unequal triangle calculations
  • Complex shape development (cones, pipes, etc.)
  • Augmented Reality (AR) floor plan visualization
  • Standard calculator functions with memory
  • Trigonometric and cosine theorem calculations
  • PCD and screw wing calculations
Features
Read full description

This is a calculator application created by me, a canner, focusing on the functions of a calculator necessary for field work. Even if you don't understand trigonometric functions, you can easily calculate with this calculator. It can calculate right triangles and unequal triangles. It can calculate memory, answer memory, pi, repetition, parentheses, trigonometric functions, and cosine theorem. Develop cones (including misalignment), diagonal cuts, R-cuts, T-pipes, shrimp tubes, rounded corners, rounded corners (eccentricity), hopper eccentricity, pipes from mirror plates, connecting pipes to tapered pipes, screw wings, and calculate PCD. It is possible to display the development on the floor in full size with AR for a specific development. User's Manual ############################ Calculator section Press and hold the "ANS" button to display past calculation results. Tap the label of the calculation result (right after pressing =) to mark the value in the ANS list. Tap the white button to enter the value displayed on the label. Swipe the screen to the left or right to rotate the right triangle. Swipe the screen up and down to flip the right triangle. Enter two right triangles and three unequal triangles. Tap the "Cal" button to display the calculation result. Tap "Cl" button to clear the displayed value. You can also use the "0" label to erase only the specified locations. If you touch the button and slide it down, the numerical value of the calculation result will be displayed on the label, and can be used for the next calculation. Trigonometric calculations can be done with By sliding the [4] and [6] buttons, you can go back and forward. Pressing the CLR button once will erase the number. Press twice to reset the rotation. Press and hold to erase numbers, reset rotation, and erase memory. Press and hold to erase numbers, reset rotation, and clear memory. Automatic input of pipe outline Example 50A -> Input "5", "0", "1 slide".   1¼B -> Input "1", "4", "1" and "2 slides". Each slide twice in succession will reduce the value by half. Expansion section The input method is the same as in the calculator section. To expand a pipe, PCD, or mirror, slide the screen to the left or right to select the expansion diagram. Basically, all buttons need to be entered, but in some places "0" can be used. For round corners (eccentricity), double-tap the screen after entering the numerical value for round corners to switch to the input screen. Please enter the division of the circumference in multiples of 4. The calculation result is an image, so it may differ from the actual shape. Disclaimer Although every effort has been made to ensure the accuracy of the calculation results in this application, the accuracy is not guaranteed. Please note that we are not responsible for any damage, loss, or disadvantage caused by the use of this application.

About

Flm∴S アイソメmaster

This app simplifies the creation of piping isometric drawings (spool drawings) for construction and fabrication sites. It replaces manual drafting and CAD software with a tablet-based tool, allowing users to easily place symbols and automatically calculate dimensions for efficient workflow.

Highlights
  • Piping and fitting symbols
  • Automatic cut length calculation
  • Part numbering and material lists
  • Vector PDF output for site use
  • Underlay image support
  • Project saving and sharing
Read full description

配管アイソメ図(スプール図)の作図に特化した、施工・製缶現場向けの作図アプリです。 紙とスケールでの手書き作図、CADソフトの立ち上げ待ち――そんな手間を、タブレット1台に置き換えます。継手やバルブのシンボルをタップして配置していくだけで、配管アイソメ図が組み上がっていきます。 【主な機能】 ■ 配管・継手シンボル エルボ(90°/45°)、チーズ、径違いチーズ、レジューサー(同心・偏心)、キャップ、フランジ、ゲート/グローブ/ボール/チェッキバルブ、溶接ソケットなど、実務でよく使う継手を一通り収録。溶接(BW)・ねじ込み(SC)・差し込み溶接(SW)・フランジ(FL)の接続種別も配管ごとに指定できます。 ■ 切寸の自動計算 JIS B2312(突合せ溶接式管継手)・JIS B2002/2080(バルブ面間寸法)に基づき、継手の食い込み分を考慮した切寸を自動計算。呼び径をひとつの区間に入力すれば、径違いチーズ・レジューサーに突き当たるまで隣接する区間へ自動的に判定が波及するので、細かい区間ひとつひとつに手入力する手間がありません。自動計算値はあくまで一般規格に基づく目安値で、各区間ごとに手入力で上書きすることもできるので、貴社独自の基準に合わせて調整可能です。 ■ 部材番号・部材表・切寸リスト 配管・継手に自動で部材番号を割り振り。同種・同径の継手は自動でグループ化されて集計されます。部材表(発注用の集計表)と切寸リスト(個別の切り出しリスト)をワンタップで生成できます。 ■ 現場で使えるPDF出力 文字や線がぼやけないベクター形式でPDF出力。用紙サイズはA1・A3・A4の3種類に対応し、縦横どちらの向きでも出力可能。図面枠・標題欄もつけられ、部材表・切寸リストもPDFに一緒に書き出せます。現場でスマートフォン・タブレットに拡大表示しても線がにじみません。 ■ 下敷き画像・参考画像 既存の図面やPDF、写真を下敷きとして取り込み、なぞり描きの参考にできます。 ■ プロジェクト保存・共有 作図データはスプール図単位のプロジェクトファイルとして保存・呼び出しが可能。iCloud Drive経由でファイルを共有・引き継ぎできます。 配管・プラント工事、製缶・スプール図作成に携わる方に、現場ですぐ使える作図ツールとしてお使いいただけます。 【ご利用にあたって】 ・切寸・面間寸法等の自動計算値は、JIS等の一般規格に基づく参考値です。溶接代・すき間の取り方や許容差は会社・現場ごとに独自基準がある場合があるため、実際の加工・施工前には必ず貴社の基準・仕様に照らして確認・調整のうえご使用ください。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Triangle34 screens
Flm∴S アイソメmaster4 screens

Verdict

The call

The clearest difference is price: Flm∴S アイソメmaster at Free against Triangle3's $3.99. Flm∴S アイソメmaster also leads on update cadence (every 2 days vs every 5 weeks). Triangle3's advantage is review sentiment (40% vs 0%). On ads, in-app purchases, device support 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

Flm∴S アイソメmaster is free to download; Triangle3 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Triangle3 ships an update every 5 weeks, Flm∴S アイソメmaster every 2 days. The most recent releases landed on October 12, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 4 level
Triangle3 versus Flm∴S アイソメmaster: the parameters behind the verdict, then further details
ParameterTriangle3Flm∴S アイソメmaster
Price$3.99Free — better
Positive reviews40.0% of reviews — better0.0% of reviews
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size7 MB39 MB
Age rating4+4+
Developerryo sasakishinji miyagawa

Customer experience

Triangle3

Written reviews10 reviews
Positive40.0%
Neutral30.0%
Negative30.0%

Flm∴S アイソメmaster

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Triangle3

No in-app purchases

None

Flm∴S アイソメmaster

No in-app purchases

Questions

Is Triangle3 free?
Triangle3 costs $3.99, with no in-app purchases.
Is Flm∴S アイソメmaster free?
Flm∴S アイソメmaster is free to download, with no in-app purchases.
Do Triangle3 or Flm∴S アイソメmaster have ads?
Neither Triangle3 nor Flm∴S アイソメmaster shows ads.
Which is updated more often, Triangle3 or Flm∴S アイソメmaster?
Triangle3 ships an update every 5 weeks, and Flm∴S アイソメmaster every 2 days. Most recently, Triangle3 was updated on October 12, 2026 and Flm∴S アイソメmaster on September 22, 2026.

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