Rectangular Beam vs i
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rectangular Beam
This app assists in the design and analysis of reinforced concrete rectangular beams. It calculates required reinforcement, draws beam sections with rebar details, and provides strain distribution diagrams. Users can also determine crack width and deflection, and generate PDF reports.
- Reinforcement calculation
- Beam section drawing
- Layer requirement check
- Strain distribution diagram
- Crack width calculation
- Deflection calculation
- PDF report generation
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Designing a Reinforced Concrete Rectangular Beam. Applied moment and forces: Bending moment, Shear and Torsion. What this application can do: • Provide the required reinforcement in Tension and Compression zone. • Draw a Section of Beam with all required reinforcement. • Check how many layers required in Tension and Compression Zone. • Draw Strain Distribution Diagram and provide ε for each rebars layer. • Get the Crack width. • Get the Deflection. • PDF report.
i
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Do you have any of the following problems in digitizing forms? - It takes a lot of time and effort to prepare images to be used in creating forms. - Drawings and photos with direct notes written on them cannot be managed in the same way as other forms. - Image quality may be rough and difficult to see, or large images may not load on the device. - There are various note-taking apps, but they lack functionality when it comes to business use. i-Repo FreeDraw is the best handwriting note taking app for digitizing forms in construction, manufacturing, maintenance and inspection works! Handwritten notes and documents of all kinds can be centrally managed. [What is i-Repo FreeDraw] You can freely write handwritten notes on PDF drawings (which can be trimmed before use), photos, documents, and i-Reporter forms. A full range of editing tools is also available to support a variety of expressions. [Handle huge images] Even large images such as A0 size (841 x 1189 mm) can be imported into the application. The quality of the imported image is maintained, so there is no need to worry about image quality degradation. [Linkage with various services] You can import drawings, photos and documents from various cloud storage (OneDrive, GoogleDrive, Dropbox, box, etc.) and file servers to i-Repo FreeDraw. Also, forms created with i-Repo FreeDraw can be easily shared to various cloud storage and chat tools (Chatwork, LINE, Teams, Slack, Google Chat, etc.). You can also send them by e-mail. [Meets the requirements for corporate users] Since i-Repo Free Draw is designed for business use, it meets the requirements for detailed permission settings and management of editing history. This app is equipped with the functions necessary for corporate business management and security measures. New Features in Version 2 ■ Insert 3D Objects Import USDZ files into your documents and freely adjust the position, rotation, and size. ■ Create Room Plans Use LiDAR-equipped devices to scan rooms and create 3D or 2D layouts. Note: Available only on devices with LiDAR scanners. ■ Export Scanned Rooms Export and share the created plans as USDZ files (3D) or PDF files (2D).
Screenshots
Verdict
The clearest difference is price: i at Free against Rectangular Beam's $4.99. i also leads on update cadence (every 2 months vs every 6 months). Rectangular Beam's advantage is iOS requirement (17.0 vs 26.0). On ads, 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
i is free to download; Rectangular Beam costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Rectangular Beam ships an update every 6 months, i every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Rectangular Beam | i |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Rab Elias | CIMTOPS CORPORATION |
In-app purchases
Rectangular Beam
No in-app purchases
i
No in-app purchases









