Comparison

Max Drilling vs Corva Legacy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Max Drilling

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
Read full description

The new Max Drilling mobile app (formerly WellData MobileRT) provides easy access to active and historical well data so you can monitor your drilling operations from wherever you are. With NOV’s edge infrastructure and M/D Totco instrumentation, your data flows securely from sensor to screen—no third parties involved—so you see it instantly, in real time, with one-second resolution. Key Features: • 1-second data streaming: View real-time drilling data on your mobile device with less than a second of lag between the rig site and your screen (excluding satellite latency). • Customizable visualization: Configure strip charts and traces with flexible options for units, scaling, and more. All tags and channels available in the RigSense Electronic Drilling Recorder (EDR) are accessible, including data from integrated applications like Drilling Beliefs & Analytics and 3rd-party survey data. • Time and depth views: Access both active and historical well data by time or depth for full operational visibility. • Lagged channel tracing: Monitor channels such as gamma ray, methane, propane, total gas, and total gas normalized. • Rig and well reports: View IADC Reports (toursheets), Drilling Contractor Morning Reports, and well information including Bit Records and BHA Summaries. • Integrated chat: Communicate instantly between the rig and other Max Drilling mobile users. • Collaborative notes: View all rig notes or add your own to the official EDR notes in the time-series data. • Secure and compliant: Built on SOC 1 Type II–audited processes and end-to-end SSL/TLS encryption for secure access from anywhere. • Rig locations: View your wells on a map for quick spatial awareness and access directions to the location. • (Coming Soon) Integrated chat: Communicate instantly between the rig and other Max Drilling mobile users. If you experience any difficulties installing or using Max Drilling, please contact the Help Desk at WellDataSupport@nov.com or 1-855-935-5328.

About

Corva Legacy

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
Read full description

Corva is the emerging leader in real time data and analytics for oil & gas. With our platform, customers and vendors alike develop powerful apps & dashboards that facilitate faster and improved quality during drilling and completion operations. Our team strives to exceed our customers’ expectations with every interaction.

Screenshots

Max Drilling4 screens
Corva Legacy4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Max Drilling versus Corva Legacy: the parameters behind the verdict, then further details
ParameterMax DrillingCorva Legacy
PriceFreeFree
Rating3.2 (22 ratings)5.0 (15 ratings) — better
Positive reviews62.5% of reviews—
Number of ratings22 — better15
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size208 MB37 MB
Age rating4+4+
DeveloperNOV Inc.Corva

Customer experience

Max Drilling

All ratings22 ratings
Positive54.5%
Neutral0.0%
Negative45.5%
Written reviews8 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

Corva Legacy

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Max Drilling

No in-app purchases

None

Corva Legacy

No in-app purchases

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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