Comparison

Perfect Structure vs PDF

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
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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

PDF

Features
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PDF-X puts a complete PDF toolkit in your pocket — 30+ tools to edit, scan, sign, convert, and organize documents, all in one clean app. EDIT PDF — NEW • Add text boxes, highlights, underlines & strikethrough • Draw freehand with pens and markers • Insert images, stamps & sticky notes • Real, editable annotations — reopen your PDF and everything is still movable and editable PDF-X Workflow • define steps to be perform on documents in sequence • choose multiple files and run automation on the file • automation steps will be applied on the document one after one SCAN & OCR • Scan documents with your camera — auto edge detection • Turn scans into crisp PDFs • Extract text from images with OCR CONVERT • Photos & images to PDF (JPG, PNG, HEIC & more) • Batch-convert your whole camera roll • Compress and resize images ORGANIZE • Merge multiple PDFs into one • Split, rotate & rearrange pages • Compress PDFs — pick your quality level • Add page numbers & watermarks SIGN & PROTECT • Fill forms and sign documents — no printer needed • Lock PDFs with a password, unlock when needed • Encrypt files before you share them CREATE • Resume Builder — professional CVs in minutes • Invoice Generator — bill clients on the spot • QR code scanner & generator PDF-X PREMIUM Go Premium to unlock unlimited access to every tool. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Questions or ideas? We read everything: muhammadshahmeer544@gmail.com Terms of Use: https://sites.google.com/view/checksumpages/home Privacy Policy: https://sites.google.com/view/pdf-x-privacypolicy/home

Screenshots

Perfect Structure4 screens
PDF4 screens

Verdict

The call

The clearest difference is update cadence: Perfect Structure at every 2 days against PDF's fortnightly. Perfect Structure also leads on iOS requirement (15.0 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Perfect Structure sells 1 one-off in-app purchase and PDF sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Perfect Structure ships an update every 2 days, PDF fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 7 level
Perfect Structure versus PDF: the parameters behind the verdict, then further details
ParameterPerfect StructurePDF
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterFortnightly
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size32 MB99 MB
Age rating4+4+
DeveloperGokhan Behcet SahinShahmeer Tahir

In-app purchases

1 purchases

Perfect Structure

One-time1
  • Perfect Structure Pro$8.99
3 purchases

PDF

Subscriptions3
  • Premium Weekly3 Days trial2 variants$2.997 Days
  • PDF-X Premium$4.991 Month
  • Premium Annual2 variants$19.991 Year

Questions

Is Perfect Structure free?
Perfect Structure is free to download, with in-app purchases available.
Is PDF free?
PDF is free to download, with in-app purchases available.
Do Perfect Structure or PDF have ads?
Both Perfect Structure and PDF show ads.
Which is updated more often, Perfect Structure or PDF?
Perfect Structure ships an update every 2 days, and PDF fortnightly. Most recently, Perfect Structure was updated on November 3, 2026 and PDF on November 4, 2026.

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