# Workover Assistant vs DrillOut Calcs

The clearest difference is update cadence: DrillOut Calcs at every 3 weeks against Workover Assistant's every 58 months. Workover Assistant's advantage is iOS requirement (16.6 vs 18.5). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Workover Assistant against 5.0 for DrillOut Calcs. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Workover Assistant ships an update every 58 months, DrillOut Calcs every 3 weeks. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Workover Assistant | DrillOut Calcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/workover-assistant/id1117692519/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/drillout-calcs/id6754534235/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 58 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 3 MB | 3 MB |
| Requires iOS | **16.6** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Cody Martin](https://appshunter.io/developer/1796736420) |

## 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


### DrillOut Calcs

[App page](https://appshunter.io/ios/app/drillout-calcs/id6754534235)

This app offers essential calculations for oilfield professionals performing post-frac plug drill-outs. It provides quick and accurate tools to verify flow balance, annular velocity, sweep efficiency, and surface return timing in real time, designed for simplicity and speed.

**Highlights:** Post-frac plug drill-out calculations, Flow balance verification, Annular velocity calculation, Sweep efficiency assessment, Surface return timing, Real-time data verification

**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 DrillOut Calcs free?

DrillOut Calcs is free to download, with no in-app purchases.

### Which has better reviews, Workover Assistant or DrillOut Calcs?

Workover Assistant and DrillOut Calcs are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Workover Assistant or DrillOut Calcs have ads?

Neither Workover Assistant nor DrillOut Calcs shows ads.

### Which is updated more often, Workover Assistant or DrillOut Calcs?

Workover Assistant ships an update every 58 months, and DrillOut Calcs every 3 weeks. Most recently, Workover Assistant was updated on October 4, 2026 and DrillOut Calcs on September 29, 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.*