# DocuNet Viewer vs 2HOT2COLD

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.

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.

## The numbers

| Metric | DocuNet Viewer | 2HOT2COLD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (4 ratings)](https://appshunter.io/ios/app/docunet-viewer/id857810655/reviews) | **[3.4 (7 ratings)](https://appshunter.io/ios/app/2hot2cold/id1352846136/reviews)** |
| Number of ratings | 4 | **7** |
| Positive reviews | 7.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 166 MB | 10 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Vistair Systems Ltd](https://appshunter.io/developer/478879616) | [Contact Software Limited](https://appshunter.io/developer/1795549824) |

## What reviewers say

### DocuNet Viewer

[App page](https://appshunter.io/ios/app/docunet-viewer/id857810655)

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.

**Highlights:** Offline manual access, Tabbed multi-document viewing, Fast intelligent searching, Bookmarking, MSN/audience filtering, Layered manuals, Automatic updates

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 2HOT2COLD

[App page](https://appshunter.io/ios/app/2hot2cold/id1352846136)

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.

**Highlights:** Report extreme temperature events, For authorized personnel only, Travel temperature logging, Commercial flight reporting

**In-app purchases:** none


## Frequently asked questions

### Is DocuNet Viewer free?

DocuNet Viewer is free to download, with no in-app purchases.

### Is 2HOT2COLD free?

2HOT2COLD is free to download, with no in-app purchases.

### Which has better reviews, DocuNet Viewer or 2HOT2COLD?

2HOT2COLD is rated higher. DocuNet Viewer averages 1.0 out of 5 from 4 ratings, while 2HOT2COLD averages 3.4 from 7 ratings.

### Do DocuNet Viewer or 2HOT2COLD have ads?

Neither DocuNet Viewer nor 2HOT2COLD shows ads.

### Which is updated more often, DocuNet Viewer or 2HOT2COLD?

DocuNet Viewer ships an update every 6 weeks, and 2HOT2COLD every 5 months. Most recently, DocuNet Viewer was updated on September 27, 2026 and 2HOT2COLD on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*