# Workover Assistant vs Riser Safety Margin

The clearest difference is iOS requirement: Riser Safety Margin at 12.0 against Workover Assistant's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Workover Assistant ships an update every 58 months, Riser Safety Margin every 37 months. The most recent releases landed on June 5, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Workover Assistant | Riser Safety Margin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/workover-assistant/id1117692519/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 58 months | **Every 37 months** |
| Monetization | Free | — |
| Size | 3 MB | 8 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Carlos Moura](https://appshunter.io/developer/407501202) |

## What reviewers say

### Workover Assistant

[App page](https://appshunter.io/ios/app/workover-assistant/id1117692519)

This utility app assists oil and gas field personnel with essential calculations for well workovers. It provides tools for hydrostatic pressure, internal capacity, and other critical functions, serving as a convenient resource for rig site or office use.

**Highlights:** Hydrostatic pressure calculations, Internal capacity calculations, Oil and gas well workover tools, Rig site and office utility, Accurate field calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Riser Safety Margin

[App page](https://appshunter.io/ios/app/riser-safety-margin/id1462441253)

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

**In-app purchases:** none


## Frequently asked questions

### Is Workover Assistant free?

Workover Assistant is free to download, with no in-app purchases.

### Is Riser Safety Margin free?

Riser Safety Margin is free to download, with no in-app purchases.

### Do Workover Assistant or Riser Safety Margin have ads?

Neither Workover Assistant nor Riser Safety Margin shows ads.

### Which is updated more often, Workover Assistant or Riser Safety Margin?

Workover Assistant ships an update every 58 months, and Riser Safety Margin every 37 months. Most recently, Workover Assistant was updated on June 5, 2026 and Riser Safety Margin on September 15, 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.*