# Business Analyzer iDecision vs SCALE Structural Calculations

The clearest difference is update cadence: SCALE Structural Calculations at monthly against Business Analyzer iDecision's every 4 months. SCALE Structural Calculations also leads on iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Business Analyzer iDecision sells 3 one-off in-app purchases and SCALE Structural Calculations sells 2 in-app purchases, starting at $50.99 per month. Whichever you choose, the download price is not the number that matters.

Business Analyzer iDecision ships an update every 4 months, SCALE Structural Calculations monthly. The most recent releases landed on May 17, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Business Analyzer iDecision | SCALE Structural Calculations |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 82 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Juan Fullana](https://appshunter.io/developer/692107580) | [Fitzroy Systems Limited](https://appshunter.io/developer/1225174135) |

## What reviewers say

### Business Analyzer iDecision

[App page](https://appshunter.io/ios/app/business-analyzer-idecision/id946550545)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation + 2 Test Analysis. | $0.99 | one-time |
| No Ads | $0.99 | one-time |
| Full iDecision© method. | $1.99 | one-time |


### SCALE Structural Calculations

[App page](https://appshunter.io/ios/app/scale-structural-calculations/id1225174136)

This app provides structural engineers with tools to perform calculations and generate component details for various structural elements. It offers a comprehensive library of proformas and expert systems for reinforced concrete, steelwork, timber, and masonry detailing, supporting both Eurocodes and British Standards.

**Highlights:** Structural calculations for beams, columns, slabs, Component detailing for steel, concrete, masonry, timber, Library of over 600 proforma calculations, Expert systems for detailing (LUCID, SPADE), 2D/3D elastic analysis (NL-STRESS), PDF and DOCX output for submission, Support for Eurocodes and British Standards

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full subscription to SCALE | $50.99 | per month |
| Full subscription to SCALE | $299.99 | per year |


## Frequently asked questions

### Is Business Analyzer iDecision free?

Business Analyzer iDecision is free to download, with in-app purchases available.

### Is SCALE Structural Calculations free?

SCALE Structural Calculations is free to download, with in-app purchases available.

### Do Business Analyzer iDecision or SCALE Structural Calculations have ads?

Neither Business Analyzer iDecision nor SCALE Structural Calculations shows ads.

### Which is updated more often, Business Analyzer iDecision or SCALE Structural Calculations?

Business Analyzer iDecision ships an update every 4 months, and SCALE Structural Calculations monthly. Most recently, Business Analyzer iDecision was updated on May 17, 2026 and SCALE Structural Calculations on June 1, 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.*