Max Drilling vs Corva Legacy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 1-second data streaming
- Customizable data visualization
- Time and depth views
- Lagged channel tracing
- Rig and well reports
- Integrated chat
- Collaborative notes
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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.
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.
- Real-time data and analytics
- App and dashboard development
- Drilling operations enhancement
- Completion operations improvement
- Customer and vendor collaboration
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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
Verdict
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
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.
| Parameter | Max Drilling | Corva Legacy |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (22 ratings) | 5.0 (15 ratings) — better |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 22 — better | 15 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 208 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | NOV Inc. | Corva |
Customer experience
Max Drilling
Corva Legacy
In-app purchases
Max Drilling
No in-app purchases
Corva Legacy
No in-app purchases








