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 functions as a specialized calculator for field work, simplifying complex calculations for right and unequal triangles. It offers advanced features for developing various pipe shapes, cones, and calculating PCD, with AR visualization for floor plans. Designed for ease of use, even without advanced math knowledge.

Highlights
  • Right and unequal triangle calculations
  • Advanced pipe and cone development
  • PCD calculation
  • AR floor plan visualization
  • Memory and answer memory functions
  • Trigonometric and cosine theorem 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
Features
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。画面をなぞるだけで配管線が引け、曲がりのエルボや分岐のチーズは自動で入ります。継手やバルブはメニューで選んでタップするだけ。寸法を入れれば、JIS規格の寸法をもとに切寸まで自動で計算します。 【かんたん作図】 ・指やペンでなぞるだけで配管線。エルボ・チーズ・クロスは自動で配置 ・突合せ溶接(BW)・差込み溶接(SW)・ねじ込み(SC)・グルービング(GR)に対応 ・45°配管とハッチ線、流れ方向の矢印、引出線・バルーン・注記、口径の表示 ・下敷き(PDF・画像)をなぞって作図、参考画像の配置 【継手・バルブ】 ・レジューサー(同心・偏芯)、径違いチーズ、キャップ、フランジ、ユニオン、ソケット、溶接ソケット・溶接サドル、ハウジング継手、フレキ ・ゲート・グローブ・ボール・チェッキ・バタフライ弁、Y形ストレーナー、ウエハーチャッキ、アラーム弁 ・JIS規格に無い継手の組み合わせは色と一覧でお知らせ ・ブラインドフランジ、ラップジョイント、プラグ・ブッシング、伸縮管継手(単式・複式)、防振継手(単球形・双球形) ・消火設備:末端試験弁、乾式弁・予作動弁・一斉開放弁、送水口 【寸法・切寸】 ・寸法線はワンタップで図面全体に自動作図 ・電卓付きの入力画面で、計算しながらそのまま寸法を入力 ・継手の引きしろを差し引いた切寸を自動計算。フランジの引きしろ・パッキン厚も設定可能 【部材番号・部材表】 ・部材番号をワンタップで自動採番、重ならない位置に自動配置 ・部材表(BOM)と切寸リストを自動で集計 【3Dプレビュー】 ・描いた図面をそのまま3Dで確認。指で回して、ピンチで寄って、細部までチェック ・寸法・切寸・部材名・口径も3Dに表示。全体・上から・正面などの視点にワンタップで切り替え ・今の視点をPDFや画像で書き出し 【PDF書き出し】 ・標題欄・部材表・切寸リスト付きのA3/A4図面をPDFで書き出し、そのまま現場や工場へ 【図面ファイルのやり取り】 ・図面ファイル(.flms)でほかの人と図面を共有。受け取ったファイルはタップして開けます 【iPhone・iPadに対応】 ・iPadは広い画面でじっくり作図、iPhoneは現場での確認や修正に 【無料でできること】 配管線・口径・フランジ・45°ハッチ線・引出線・バルーン・注記・流れ矢印・ペン、部材番号・部材表・PDF書き出し 【有料プランでできること】 チーズ以外の継手・バルブ類、寸法線と切寸の自動計算、部材表示、3Dプレビュー、実寸表示 【有料プランについて】 ・買い切りと月額サブスクリプションからお選びいただけます。 ・月額サブスクリプションは、現在の期間が終了する24時間以上前に自動更新をオフにしない限り、自動的に更新されます。 ・お支払いは購入確定時にApple Accountに請求されます。更新料金は、現在の期間が終了する前の24時間以内に請求されます。 ・サブスクリプションの管理・解約は、購入後にApple Accountの「サブスクリプション」設定から行えます。 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 11 days vs every 5 weeks). Triangle3's advantage is review sentiment (40% vs 0%) and in-app purchases (none vs 2). On ads, 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. Flm∴S アイソメmaster sells 2 in-app purchases, starting at $3.99 per month. Triangle3 asks for nothing beyond the download.

UpkeepUpdate frequency

Triangle3 ships an update every 5 weeks, Flm∴S アイソメmaster every 11 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 3 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 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size8 MB41 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 reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Triangle3

No in-app purchases

2 purchases

Flm∴S アイソメmaster

Subscriptions1
  • 月額サブスクリプション$3.991 Month
One-time1
  • 全機能アンロック(買い切り)$19.99

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 in-app purchases available.
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 11 days. Most recently, Triangle3 was updated on November 3, 2026 and Flm∴S アイソメmaster on October 31, 2026.

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