# Rectangular Beam vs NautilusCalc

The clearest difference is in-app purchases: Rectangular Beam at none against NautilusCalc's 1. NautilusCalc's advantage is price ($2.99 vs $4.99). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Rectangular Beam costs $4.99 and NautilusCalc $2.99 up front. NautilusCalc sells 1 one-off in-app purchase. Rectangular Beam asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 1.0 for Rectangular Beam against 1.0 for NautilusCalc. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rectangular Beam | NautilusCalc |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/rectangular-beam/id1436344246/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/nautiluscalcgolden-ratio-calc/id6470174577/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 13 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rab Elias](https://appshunter.io/developer/918944482) | [kotobaz](https://appshunter.io/developer/1634727152) |

## 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


### NautilusCalc

[App page](https://appshunter.io/ios/app/nautiluscalcgolden-ratio-calc/id6470174577)

Easily compute the Golden Ratio, Silver Ratio, and Bronze Ratio. Save results, customize decimal places, and rounding methods. Ideal for designers, artists, students, and math enthusiasts.

**Highlights:** Golden Ratio, Silver Ratio, Bronze Ratio calculation, Save calculation results, Customizable decimal places, Customizable rounding methods, Intuitive interface

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Save Function | $1.99 | one-time |


## Frequently asked questions

### Is Rectangular Beam free?

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

### Is NautilusCalc free?

NautilusCalc costs $2.99, and also offers in-app purchases.

### Which has better reviews, Rectangular Beam or NautilusCalc?

Rectangular Beam and NautilusCalc are both rated 1.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Rectangular Beam or NautilusCalc have ads?

Neither Rectangular Beam nor NautilusCalc shows ads.

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

Rectangular Beam ships an update every 6 months, and NautilusCalc every 6 months. Most recently, Rectangular Beam was updated on November 2, 2026 and NautilusCalc on November 3, 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.*