iSectionLite vs FlowAnalyzer Viewer
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.
FlowAnalyzer Viewer
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FlowAnalyzer Viewer opens water network models (.inp files) on your iPhone or iPad, runs a hydraulic simulation with the EPANET 2.2 engine, and lets you inspect the results element by element. WHAT YOU CAN DO • Open .inp files from Files, Mail, AirDrop or cloud storage • Run a hydraulic simulation and step through the time periods • See the network on an interactive map: zoom, pan, touch and hold any node to see its data • Read pressure, head, demand, flow, velocity and headloss for junctions, pipes, pumps, tanks, reservoirs and valves • Review hydraulic and time options • Works offline. Your files stay on your device EDIT IN FLOWANALYZER Tap "Edit & simulate in FlowAnalyzer" on the network screen to send the network to FlowAnalyzer (if installed) to edit it. If FlowAnalyzer is not installed, its App Store page opens inside the viewer. The two apps are separate. They use different EPANET engine versions (2.2 and 2.3.5); results may differ. FREE FlowAnalyzer Viewer is free, with no limit on network size. To edit and create networks, there is FlowAnalyzer. PRIVACY No account, no ads, no tracking. The app collects no data. FlowAnalyzer Viewer uses the EPANET 2.2 engine to read and simulate .inp files. It is an independent app, not affiliated with, endorsed by or sponsored by the U.S. Environmental Protection Agency (EPA).
Screenshots
Verdict
The clearest difference is in-app purchases: iSectionLite at none against FlowAnalyzer Viewer's 1. iSectionLite also leads on iOS requirement (8.0 vs 15.0). FlowAnalyzer Viewer's advantage is update cadence (every 2 months vs every 46 months). On price, ads 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. FlowAnalyzer Viewer sells 1 one-off in-app purchase. iSectionLite asks for nothing beyond the download.
iSectionLite ships an update every 46 months, FlowAnalyzer Viewer every 2 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.
| Parameter | iSectionLite | FlowAnalyzer Viewer |
|---|---|---|
| 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 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 0 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ahmj | Transparent Blue Water LLC |
In-app purchases
iSectionLite
No in-app purchases
FlowAnalyzer Viewer
- HydroViewer Pro$2.99
Questions
Is iSectionLite free?
Is FlowAnalyzer Viewer free?
Do iSectionLite or FlowAnalyzer Viewer have ads?
Which is updated more often, iSectionLite or FlowAnalyzer Viewer?
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