DocuNet Viewer vs Centrik
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DocuNet Viewer
Access flight operations manuals offline on your iPad. This app provides fast, intelligent searching, bookmarking, and filtering for your entire manual library, ensuring you always have the latest information from all manufacturers.
- Offline manual access
- Tabbed multi-document viewing
- Fast intelligent searching
- Bookmarking
- MSN/audience filtering
- Layered manuals
- Automatic updates
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For airlines using Vistair's acclaimed industry leading Flight Operations Technical Publications service, this is the iPad application that you can deploy to your crew to enable them to access their flight operations manuals offline. *This app requires your airline to have a DocuNet contract with Vistair to function in an operational environment* Functionality includes tabbed, multi-document viewing, fast intelligent searching across your manual library with highlighted results, bookmarking, MSN/audience filtering and Layers for applicable manuals and access to your latest manuals of all manufacturers including Boeing and Airbus from the Vistair technical publications service. Updates are delivered directly to your iPad. Simple to use and navigate, its quick access and elegant design gives you access to your manual library wherever you are. The Vistair DocuNet service includes the full back-end management of content to all devices in your fleet and visibility of update and revision status down to each device with full access control.
Centrik
This app serves as an Electronic Flight Bag, enabling users to access and manage flight documents and forms offline. It synchronizes data when an internet connection is available, providing a seamless interface for flight operations.
- Offline document access
- Offline form completion
- Data synchronization
- Seamless interface
- Electronic Flight Bag functionality
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The Centrik iPad App is the "Electronic Flight Bag" for the TrustFlight Centrik system. It allows Centrik users to carry documents off-line, fill in forms off-line, and synchronize the EFB contents when back on-line. It also provides a seamless interface to access Centrik from the iPad.
Screenshots
Verdict
The clearest difference is rating: Centrik at 5.0 against DocuNet Viewer's 1.0. Centrik also leads on review sentiment (17% vs 7%). DocuNet Viewer's advantage is ratings volume (4 vs 1). On price, update cadence, ads 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.
Centrik holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 7% of DocuNet Viewer's written reviews are positive against 17% of Centrik's.
DocuNet Viewer ships an update every 6 weeks, Centrik monthly. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.
| Parameter | DocuNet Viewer | Centrik |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 7.1% of reviews | 16.7% of reviews — better |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 166 MB | 90 MB |
| Age rating | 17+ | 4+ |
| Developer | Vistair Systems Ltd | TrustFlight Limited |
Customer experience
DocuNet Viewer
Centrik
Bugs and requests
DocuNet Viewer
Reported bugs
33 issues- App freezes and locks up after making a selection or completing an action
- Selecting a search result loads a different page
- App crashes on M1/M2 Macs
- Highlights and bookmarks are difficult to differentiate
- App crashes instantly upon launch on Macbook
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- Freezes for 5+ seconds every time the app is opened or switched to
- App scrolls up and down by itself
- Update deleted all saved bookmarks
- App scrolls by itself
- Title pages disappear making it difficult to switch documents
- Automatic scrolling feature does not work
- Touch targets are too small and close to other functions
- Latest update does not work with iOS 14.2
- Cannot swipe left to right to change pages
- Navigation pane disappears in portrait mode
- Search results disappear when opening a new tab
- Page won't shrink to fit in landscape mode
- Directory/subdirectories tree is randomly on the top right
- Pinned panel and bar doesn't stay
- Search doesn't work properly or highlight correctly
- Audience filter drop down not wide enough
- Page fwd/back icons get in the way
- Library list opens on random page of document
- Update function is ridiculous
- Cannot login
- New iOS does not support this version
- No box for password on login screen
- Menu browser disappears after selecting an item
- AirPrint compresses text
- Cannot add new bookmarks
- Annotation system does not save the order of rearranged bookmarks
- Contextual menu disappears in portrait mode
- Pressing button to go back to library list works erratically
Requested features
7 requests- Dark mode overhaul
- Widget for favorites/bookmarks
- Ability to collapse side library
- Improve dark mode for pictures
- Update to support iPad Pro screen sizes
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- Update manuals when iPad is asleep
- Allow split screen function for iOS
Centrik
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DocuNet Viewer
No in-app purchases
Centrik
No in-app purchases
Questions
Is DocuNet Viewer free?
Is Centrik free?
Which has better reviews, DocuNet Viewer or Centrik?
Do DocuNet Viewer or Centrik have ads?
Which is updated more often, DocuNet Viewer or Centrik?
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