# Rectangular Beam vs i

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.

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.

## The numbers

| Metric | Rectangular Beam | i |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/rectangular-beam/id1436344246/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 3 MB | 34 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rab Elias](https://appshunter.io/developer/918944482) | [CIMTOPS CORPORATION](https://appshunter.io/developer/467897514) |

## What reviewers say

### Rectangular Beam

[App page](https://appshunter.io/ios/app/rectangular-beam/id1436344246)

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.

**Highlights:** Reinforcement calculation, Beam section drawing, Layer requirement check, Strain distribution diagram, Crack width calculation, Deflection calculation, PDF report generation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-repo-freedraw/id1566317361)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rectangular Beam free?

Rectangular Beam costs $4.99, with no in-app purchases.

### Is i free?

i is free to download, with no in-app purchases.

### Do Rectangular Beam or i have ads?

Neither Rectangular Beam nor i shows ads.

### Which is updated more often, Rectangular Beam or i?

Rectangular Beam ships an update every 6 months, and i every 2 months. Most recently, Rectangular Beam was updated on November 2, 2026 and i on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*