Comparison

Perfect Structure vs RCS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Perfect Structure

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
Read full description

Design and optimize reinforced concrete columns and beams easily with this App. . Language support for English, German, French, Italian, Spanish, Portuguese, Russian and Turkish. Supported design codes include ACI 318, Eurocode 2, BS 8110, SP 63.13330 and TS 500. Execute your design in seconds and receive the results in PDF, CSV and DXF formats. Share your calculation report with your colleagues over the internet. Fast and flexible. Key Features: - Modern and User Friendly Design - 5 Design Codes: ACI 318, Eurocode 2, BS 8110, SP 13330 and TS 500 - 8 Languages: English, German, French, Italian, Spanish, Portuguese, Russian and Turkish - 2 Units Systems: Metric (SI) & Imperial - 3 Different File Formats for Output: PDF, CSV, DXF - Reinforced Concrete Column Section Types: Rectangular, Circular, Hallow Rectangular and Hallow Circular - Reinforced Concrete Beam Section Types: Rectangular, T-beam, I-beam, Box-beam (Hollow Core) - Design of both singly and doubly reinforced beams - Draw interaction diagrams for columns - Checks given reinforcement against given loads and section parameters OR calculates optimal reinforcement amount against given loads - Calculates and checks both flexural reinforcement and shear reinforcement We hope you will enjoy using it and highly appreciate your valuable feedback. Perfect Structure is the ultimate tool for engineers to design and check the load bearing capacity of reinforced concrete members. Test your structure on the go! With its intuitive and contemporary interface, Perfect Structure brings the best of UX to your mobile phones and tablets. Execute your design and receive the results in PDF, CSV and DXF formats. Share your calculation report with your colleagues over the internet. Fast and flexible, Perfect Structure is the everyday tool for the perfect engineer who wants to have the mobility of a smartphone or a tablet without a compromise. Just launch your Perfect Structure app, use the buttons on the main screen for a column or a beam, select the section type, enter the dimension and load data, assign steel and concrete grades and leave the rest to your app by hitting the “Calculate” button. The results will be ready in moments with a clear and concise results screen. Then, select the PDF, CSV and DXF output options if you’d like to send the results to others, save the report in your project folder or inspect your column or beam layout in a CAD software. Use the settings page for a variety of options from user feedback to design code selection. See how your design complies with the design codes by getting the design check results according to the relevant code. Try and test different reinforcement bar arrangements and member dimensions to get to the optimal configuration. Phenomenally easy to use and flexible, Perfect Structure will get you to the result in a matter of seconds with a top-notch user experience. Tags: Reinforced Concrete Column Design, Reinforced Concrete Beam design, Reinforced Concrete, Structural Design, Structural Optimization, design of reinforced concrete members, PDF output, shear design, moment design, high strength concrete, high strength steel, reinforcement steel, column interaction diagram.

About

RCS

Read full description

Analyse and design reinforced concrete sections on your iPhone. RCS brings geometry, material properties, load cases and calculation results into one workflow, with professional PDF reports. DEFINE YOUR CROSS SECTION Choose from solid and hollow circular, rectangular, oblong and other standard sections. Build beam and wall sections, or define custom contours, openings and reinforcement. Use bar catalogues or custom diameters, with count and spacing modes where available. SET MATERIALS AND THE DESIGN CODE Define the concrete and steel properties, and select from the supported editions of ACI 318, AASHTO LRFD, CSA A23.3, CSA S6, AS 3600 and NZS 3101. Review material behaviour and adjust the advanced parameters for the selected profile. US and SI units are available. ADD YOUR LOAD CASES Enter axial forces and bending moments manually, import them from a file or paste a table of values. CALCULATE SECTION PROPERTIES Obtain areas, centroids, bending inertias and principal axes. Use finite element calculations for torsional properties, shear areas and the shear centre, and inspect shear stress distributions. CHECK RESISTANCE IN BIAXIAL BENDING Section check combines a 3D interaction surface, 2D curves and load checks in one page. Compare design and nominal resistance. Review resistant moments at each load's axial force, demand-to-resistance ratios and characteristic limit states. Identify the load cases the section can resist and those for which its resistance is insufficient. DESIGN THE REINFORCEMENT Determine the minimum steel area for the selected load cases. Review the resulting resistance surface, then recalculate a catalogue bar proposal selected from the design standard for the defined arrangement. CREATE PROFESSIONAL REPORTS Combine geometry, materials, loads and selected analysis results in a PDF report. Include project and engineer details, then save or share the report using your preferred app. LEARN THROUGH A GUIDED EXAMPLE Follow a circular-section example through section properties, section checks, reinforcement design and the final report. Contextual help explains each page and its results. LOCAL CALCULATIONS. NO ACCOUNT. Calculations run on your device. Save and load your project inputs locally, and choose when to share your reports. No RCS account is required. BUY ONCE, KEEP IT FOREVER Full access is a one-time purchase: no subscription, no recurring billing and no account. Updates are included. The App Store displays the price for your region before confirmation. Try RCS first with a free trial of 7 days or 20 analyses, whichever comes first, with no automatic charge. Restore purchases from Settings using the same Apple Account. RCS calculates cross-section resistance and properties. It does not perform a complete structural or member design. Review the selected code edition, material assumptions and input data for your project. Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Perfect Structure4 screens
RCS4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 6 level
Perfect Structure versus RCS: the parameters behind the verdict, then further details
ParameterPerfect StructureRCS
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size32 MB26 MB
Age rating4+4+
DeveloperGokhan Behcet SahinNabil El Berria

In-app purchases

1 purchases

Perfect Structure

One-time1
  • Perfect Structure Pro$8.99
4 purchases

RCS

Subscriptions2
  • RCS Weekly7 Days trial$4.997 Days
  • RCS Yearly7 Days trial$49.991 Year
One-time2
  • 7-day TrialFree
  • Full Access$24.99

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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