# Deflection Pro vs cFormula

The clearest difference is price: cFormula at Free against Deflection Pro's $19.99. cFormula also leads on iOS requirement (13.0 vs 15.0). Deflection Pro's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

cFormula is free to download; Deflection Pro costs $19.99 up front. cFormula sells 1 one-off in-app purchase. Deflection Pro asks for nothing beyond the download.

Deflection Pro ships an update every 5 weeks, cFormula every 5 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Deflection Pro | cFormula |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[4.7 (16 ratings)](https://appshunter.io/ios/app/deflection-pro/id1217160203/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Paid | — |
| Size | 163 MB | 13 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blue Ketchep](https://appshunter.io/developer/1131834248) | [疆 边](https://appshunter.io/developer/1124320934) |

## What reviewers say

### Deflection Pro

[App page](https://appshunter.io/ios/app/deflection-pro/id1217160203)

This advanced structural analysis calculator assists engineers with beam, truss, and frame design. It generates load combinations based on American and European standards and performs detailed beam column capacity checks. Results are presented intuitively, with options to export to PDF and save files.

**Highlights:** Beam, truss, and frame analysis, Load combination generation (US & EU standards), Beam column capacity checks (flexure, shear, tension, compression), Detailed design checks for various buckling types, PDF export, Save to external file

**Features:** Vision Pro support

**In-app purchases:** none


### cFormula

[App page](https://appshunter.io/ios/app/cformula/id6475750528)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fully unlock app | $1.99 | one-time |


## Frequently asked questions

### Is Deflection Pro free?

Deflection Pro costs $19.99, with no in-app purchases.

### Is cFormula free?

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

### Do Deflection Pro or cFormula have ads?

cFormula shows ads; Deflection Pro does not.

### Which is updated more often, Deflection Pro or cFormula?

Deflection Pro ships an update every 5 weeks, and cFormula every 5 months. Most recently, Deflection Pro was updated on November 6, 2026 and cFormula on November 8, 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.*