# Perfect Structure vs RCS

The clearest difference is ads: RCS at none against Perfect Structure's shown. Perfect Structure's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Perfect Structure sells 1 one-off in-app purchase and RCS sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Perfect Structure | RCS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/perfect-structure/id1581860758/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 26 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gokhan Behcet Sahin](https://appshunter.io/developer/1409805750) | [Nabil El Berria](https://appshunter.io/developer/6775173502) |

## What reviewers say

### Perfect Structure

[App page](https://appshunter.io/ios/app/perfect-structure/id1581860758)

Design and optimize reinforced concrete columns and beams with support for multiple international design codes and languages. Generate reports in PDF, CSV, and DXF formats, and share them with colleagues. Offers a user-friendly interface for quick and flexible structural analysis.

**Highlights:** Reinforced concrete column and beam design, Support for 5 international design codes, Multilingual support (8 languages), Output in PDF, CSV, and DXF formats, Modern and user-friendly interface, Design checks and optimal reinforcement calculation

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Perfect Structure Pro | $8.99 | one-time |


### RCS

[App page](https://appshunter.io/ios/app/rcs-concrete-sections/id6810959198)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RCS Weekly | $4.99 | per 7 days |
| RCS Yearly | $49.99 | per year |
| 7-day Trial | Free | one-time |
| Full Access | $24.99 | one-time |


## Frequently asked questions

### Is Perfect Structure free?

Perfect Structure is free to download, with in-app purchases available.

### Is RCS free?

RCS is free to download, with in-app purchases available.

### Do Perfect Structure or RCS have ads?

Perfect Structure shows ads; RCS does not.

### Which is updated more often, Perfect Structure or RCS?

Perfect Structure ships an update every 2 days, and RCS every 2 days. Most recently, Perfect Structure was updated on October 11, 2026 and RCS on October 31, 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.*