# Max Drilling vs Corva Legacy

The clearest difference is rating: Corva Legacy at 5.0 against Max Drilling's 3.2. Max Drilling's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence 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.

Corva Legacy holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 22 and 15 respectively.

Max Drilling ships an update every 4 months, Corva Legacy every 2 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Max Drilling | Corva Legacy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (22 ratings)](https://appshunter.io/ios/app/max-drilling/id1184959427/reviews) | **[5.0 (15 ratings)](https://appshunter.io/ios/app/corva-legacy/id1194184159/reviews)** |
| Number of ratings | **22** | 15 |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 208 MB | 37 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NOV Inc.](https://appshunter.io/developer/578550101) | [Corva](https://appshunter.io/developer/1194184158) |

## What reviewers say

### Max Drilling

[App page](https://appshunter.io/ios/app/max-drilling/id1184959427)

Monitor drilling operations in real-time with instant access to active and historical well data. Visualize drilling parameters, view rig reports, and communicate securely with your team from anywhere.

**Highlights:** 1-second data streaming, Customizable data visualization, Time and depth views, Lagged channel tracing, Rig and well reports, Integrated chat, Collaborative notes

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

**In-app purchases:** none


### Corva Legacy

[App page](https://appshunter.io/ios/app/corva-legacy/id1194184159)

This platform provides real-time data and analytics for the oil and gas industry. It enables customers and vendors to build custom applications and dashboards for enhanced drilling and completion operations.

**Highlights:** Real-time data and analytics, App and dashboard development, Drilling operations enhancement, Completion operations improvement, Customer and vendor collaboration

**In-app purchases:** none


## Frequently asked questions

### Is Max Drilling free?

Max Drilling is free to download, with no in-app purchases.

### Is Corva Legacy free?

Corva Legacy is free to download, with no in-app purchases.

### Which has better reviews, Max Drilling or Corva Legacy?

Corva Legacy is rated higher. Max Drilling averages 3.2 out of 5 from 22 ratings, while Corva Legacy averages 5.0 from 15 ratings.

### Do Max Drilling or Corva Legacy have ads?

Corva Legacy shows ads; Max Drilling does not.

### Which is updated more often, Max Drilling or Corva Legacy?

Max Drilling ships an update every 4 months, and Corva Legacy every 2 months. Most recently, Max Drilling was updated on October 24, 2026 and Corva Legacy on October 4, 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.*