DHC vs GroundHog Maintenance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DHC
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To enroll to use the DHC-Mobile Maintenance app please contact: De Havilland Customer Service by email dehavillandcustomerservice@gilmore.ca or phone 1-800-795-6661. Bringing Paperless¹ Efficiency to Line Maintenance! This application requires a subscription to De Havilland Technical Publications. Using the DeHavilland Mobile Maintenance© application, line and heavy maintenance crews can enjoy the benefits of going paperless¹ by being able to store and access publication data instantly from their iPad© – without WiFi. This solution combines automatic publications and Temporary Revision (TR) updates in one application. De Havilland Mobile Maintenance© enables maintenance facilities to achieve paperless¹ operations simply and efficiently. Accessible Instruction for Continued Airworthiness (ICAs). Up to date. All in one place. Fast and easy, iPad© users simply enter their license code, then ‘sync’ the iPad© app to De Havilland Online Technical Publications. Updated publications are automatically downloaded, indexed and ready to use.in minutes, aircraft maintenance engineers can add text, add signatures to tasks and email them to the fleet maintenance personnel. Automatic revision updates. No more manually inserting revisions and Temporary Revisions (TRs) into De Havilland maintenance manuals. These are automatically inserted into the correct sections and distributed across every iPad© in the operator’s fleet by De Havilland Technical Publications. Valuable time is saved, and maintenance crews are always ready with the latest publications. ¹ Paperless refers to the process identified in the relevant aviation industry requirements pertaining to paperless operations. Use of the De Havilland Mobile Maintenance© application does not relieve operators and their maintenance control or engineering crews of their responsibility to comply with applicable airworthiness authority approved documents.
GroundHog Maintenance
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groundHog is a mobile fleet management system optimized for underground mines. Designed to work out of the box, groundHog controls production, tracks, and schedules the workforce, and delivers deep insights to increase process efficiency. Leverage groundHog to build a mine that is highly efficient, safe, and profitable. groundHog helps mine operators harness the power of mobile technology to gain visibility into the underground mine cycle. Specifically, operators can see their tasks and report in-shift progress while they make impactful adjustments in real-time. Technician complete assigned breakdown: After technician logs onto groundHog, they see their schedule for the shift or the day. Technician work by following the schedule and update their progress on the app.
Screenshots
Verdict
The clearest difference is update cadence: GroundHog Maintenance at every 3 weeks against DHC's every 8 months. GroundHog Maintenance also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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.
DHC ships an update every 8 months, GroundHog Maintenance every 3 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | DHC | GroundHog Maintenance |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 92 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | De Havilland Aircraft Company of Canada Limited | rapidBizApps |
In-app purchases
DHC
No in-app purchases
GroundHog Maintenance
No in-app purchases
Questions
Is DHC free?
Is GroundHog Maintenance free?
Do DHC or GroundHog Maintenance have ads?
Which is updated more often, DHC or GroundHog Maintenance?
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