Max Maintenance vs sketchbookDuo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Max Maintenance
This mobile tool provides essential asset maintenance information and allows users to manage work orders and material transfers. Its offline functionality ensures productivity in remote areas or locations with poor connectivity.
- Comprehensive asset information access
- Execute planned work orders
- Create unplanned work orders
- Interactive checklists for inspections
- Approve material transfers
- Offline functionality for continuous work
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Max Maintenance Mobile is the on-the-go solution for NOV's Max Maintenance application. With its focus on getting work done, users are provided with information critical to maintaining their assets. The offline functionality empowers users to stay productive even in remote locations or areas with limited internet connectivity. Features: 1. Comprehensive Asset Information: Access vital information about your company's assets with ease. 2. Planned Work Orders: Effortlessly execute and complete planned work orders. 3. Unplanned Work Orders: Respond promptly to unexpected issues or urgent repairs with the ability to create unplanned work orders on the fly. 4. Interactive Checklists: Perform inspections and checklists effortlessly. 5. Material Transfers: Simplify the process of approving material transfers. Just approve and sync to minimize delays. 6. Offline Capabilities: Designed to work offline, Max Maintenance Mobile ensures that you can continue your work even in areas with limited or no internet access. Perform tasks, update information, and sync data once you're back online, eliminating any workflow interruptions. Contact NOV today to find out how to join our growing list of satisfied Max Maintenance users.
sketchbookDuo
Design, manage, and send marking data to compatible devices. Features a grid-based editor for precise text placement and robust file management for marking jobs. Connects wirelessly for efficient control of marking tasks.
- Grid-based editor
- File management
- Device connection
- Marking control
- Customizable grids
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sketchbookDuo is the official companion app for MarkinBox and Patmark devices. With sketchbookDuo, you can easily design, manage, and send marking data directly from your iPhone or iPad to your MB3 device. Key Features • Grid-based editor – Create and place text precisely on customizable grids (80×20, 33×15, 15×15). • File management – Save, load, rename, overwrite, and delete local marking files (.bppg). • Device connection – Connect to MB3 devices quickly over Wi-Fi. • Marking control – Start, pause, and send marking jobs with one tap. • Settings – Adjust grid sizes and prepare for future features. sketchbookDuo is designed for professionals who need precision and efficiency in portable marking. Whether in the workshop or on-site, MB3App makes marking tasks simpler, faster, and more reliable.
Screenshots
Verdict
The clearest difference is iOS requirement: Max Maintenance at 13.0 against sketchbookDuo's 16.6. On price, rating, ratings volume and update cadence 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.
On the App Store both sit at effectively the same score — 5.0 for Max Maintenance against 5.0 for sketchbookDuo. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Max Maintenance ships an update every 3 weeks, sketchbookDuo fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Max Maintenance | sketchbookDuo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 76 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | NOV Inc. | Tocho Marking Systems, Inc. |
Customer experience
Max Maintenance
sketchbookDuo
In-app purchases
Max Maintenance
No in-app purchases
sketchbookDuo
No in-app purchases
Questions
Is Max Maintenance free?
Is sketchbookDuo free?
Which has better reviews, Max Maintenance or sketchbookDuo?
Do Max Maintenance or sketchbookDuo have ads?
Which is updated more often, Max Maintenance or sketchbookDuo?
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