DocuNet Viewer vs 2HOT2COLD
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.
2HOT2COLD
This application allows authorized personnel to report extreme temperature events encountered during commercial flights. It is intended for specific users and not for general public download.
- Report extreme temperature events
- For authorized personnel only
- Travel temperature logging
- Commercial flight reporting
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App for reporting events of unusually hot or cold temperature conditions when traveling on commercial airplanes. To be used by authorised personnel only - please do not download this app unless you have been asked to do so.
Screenshots
Verdict
The clearest difference is review sentiment: 2HOT2COLD at 100% against DocuNet Viewer's 7%. 2HOT2COLD also leads on rating (3.4 vs 1.0) and iOS requirement (9.0 vs 15.0). DocuNet Viewer's advantage is update cadence (every 6 weeks vs every 5 months). On price, ratings volume, 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.
2HOT2COLD holds the better App Store score, 3.4 against 1.0. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews point the same way: 7% of DocuNet Viewer's written reviews are positive against 100% of 2HOT2COLD's.
DocuNet Viewer ships an update every 6 weeks, 2HOT2COLD every 5 months. The most recent releases landed on September 27, 2026 and June 1, 2026 respectively.
| Parameter | DocuNet Viewer | 2HOT2COLD |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (4 ratings) | 3.4 (7 ratings) — better |
| Positive reviews | 7.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 7 — better |
| Update frequency | Every 6 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 166 MB | 10 MB |
| Age rating | 17+ | 4+ |
| Developer | Vistair Systems Ltd | Contact Software Limited |
Customer experience
DocuNet Viewer
2HOT2COLD
In-app purchases
DocuNet Viewer
No in-app purchases
2HOT2COLD
No in-app purchases
Questions
Is DocuNet Viewer free?
Is 2HOT2COLD free?
Which has better reviews, DocuNet Viewer or 2HOT2COLD?
Do DocuNet Viewer or 2HOT2COLD have ads?
Which is updated more often, DocuNet Viewer or 2HOT2COLD?
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