# DTA Pro vs LEO Rigging Calculator

The clearest difference is price: LEO Rigging Calculator at Free against DTA Pro's $24.99. LEO Rigging Calculator also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 17.4). On ads, in-app purchases and device support there is nothing between them.

LEO Rigging Calculator is free to download; DTA Pro costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DTA Pro ships an update every 3 months, LEO Rigging Calculator every 3 weeks. The most recent releases landed on September 17, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | DTA Pro | LEO Rigging Calculator |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 98 MB | 61 MB |
| Requires iOS | 17.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Philippe Levesque](https://appshunter.io/developer/1715810036) | [CLAN LEO PRIVATE LIMITED](https://appshunter.io/developer/1738165463) |

## What reviewers say

### DTA Pro

[App page](https://appshunter.io/ios/app/dta-pro/id6471654590)

**Features:** Apple Wallet

**In-app purchases:** none


### LEO Rigging Calculator

[App page](https://appshunter.io/ios/app/leo-rigging-calculator/id6744311128)

This app provides quick solutions for everyday rigging calculations, assisting engineers and safety personnel in site surveys and rigging plan designs. It helps verify calculations, determine clearances, and analyze load distribution for safe lifting operations. Results can be exported to PDF for easy sharing.

**Highlights:** Boom clearance calculator, Tail load calculator, Wind speed calculator, Sling tension calculator, Percentage capacity calculator, Sling weight calculator, Axle load calculator, SPMT GBP load calculator

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

**In-app purchases:** none


## Frequently asked questions

### Is DTA Pro free?

DTA Pro costs $24.99, with no in-app purchases.

### Is LEO Rigging Calculator free?

LEO Rigging Calculator is free to download, with no in-app purchases.

### Do DTA Pro or LEO Rigging Calculator have ads?

Neither DTA Pro nor LEO Rigging Calculator shows ads.

### Which is updated more often, DTA Pro or LEO Rigging Calculator?

DTA Pro ships an update every 3 months, and LEO Rigging Calculator every 3 weeks. Most recently, DTA Pro was updated on September 17, 2026 and LEO Rigging Calculator on September 26, 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.*