iSectionLite vs SSFMfree
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSectionLite
This engineering app calculates mechanical and structural properties for built-up section members. It supports various international steel shapes and allows input and output in both metric and imperial units.
- Calculates moment of inertia, modulus of section, radius of gyration, area, and weight
- Supports European, American, Canadian, and British steel shapes
- Input and output in mm or inch units
- Calculations in principal axes
- Light version with limitations on hot rolled library and flange dimensions
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iSection: For all structural engineers, steel designers, mechanical engineers: This engineering application for the iPhone or the iPod Touch calculates the mechanical and structural properties of three-plate built up section members. That includes moment of inertia, modulus of section, radius of gyration, area and weight. The calculations are done in both principal axes. This program is particularly useful for analysis and design of indeterminate structures and for calculating actual and allowable (permissible) stresses of structural members (beams, columns, etc.). The input is top flange width, top flange thickness, bottom flange width, bottom flange thickness, web depth and web thickness. The top flange and bottom flange dimensions can vary. You can select a section from a large library of hot rolled shapes: European IPE, HEA, HEB, HEM and American W shapes Canadian W metric shapes and British universal beams and columns (UB and UC shapes). More shapes from other countries will be added in the next releases. The input can be in mm or inch units, the output of area, Ixx, Sxx, Sxt, Sxb, Iyy, Iyt, Iyb, Syy rx, ry, rt, rb, Syt, Syb, depth and neutral axis can be displayed in mm or inch units. The weight can be displayed in kg/m or Lb/ft. This is a light version with limitations: The hot rolled library contains selected American shapes only and the built up section can have only equal top and bottom flanges. For the full version see iSection in the App Store. See also iConcrete in the App Store which designs single and double reinforced concrete rectangular and T beams.
SSFMfree
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鉄工所職人の為のリファレンス(便覧)アプリです。 各種鋼材(形鋼)の寸法表および重量表を表示します。 断面詳細図、単位重量を画面をフリックするだけで簡単に閲覧できます。 単位重量が表示されている箇所をタップすれば重量計算画面に移り、寸法と数量を入力して総重量を自動計算します。また集計表の作成も出来ます。 このアプリケーションソフト(SSFM)のご使用は全て利用者の自己責任において行うものとします。 本アプリケーションソフトを運用した結果生じた損害について、作者は一切の責任を負いません。 内容、データについては万全を期すつもりですが、もし誤りがあればお知らせください。 画面下部に広告が表示されます。 画面操作の反応が重い機種で表示が乱れることがあります。
Screenshots
Verdict
The clearest difference is ads: iSectionLite at none against SSFMfree's shown. iSectionLite also leads on iOS requirement (8.0 vs 15.0). SSFMfree's advantage is update cadence (every 11 months vs every 46 months). On price, 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.
iSectionLite ships an update every 46 months, SSFMfree every 11 months. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.
| Parameter | iSectionLite | SSFMfree |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (12 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 46 months | Every 11 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 0 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | ahmj | sigeyosi kanenishi |
In-app purchases
iSectionLite
No in-app purchases
SSFMfree
No in-app purchases









