# Manuals Viewer vs OpenCanyon.org

The clearest difference is iOS requirement: Manuals Viewer at 7.1 against OpenCanyon.org's 16.0. On price, rating, ratings volume and update cadence there is nothing between them.

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 Manuals Viewer against 5.0 for OpenCanyon.org. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Manuals Viewer ships an update every 3 months, OpenCanyon.org every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Manuals Viewer | OpenCanyon.org |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/manuals-viewer/id992174297/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/opencanyonorg/id6478461718/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 59 MB | 101 MB |
| Requires iOS | **7.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Colorado Time Systems](https://appshunter.io/developer/992174296) | [Urs Kobald](https://appshunter.io/developer/1723297501) |

## What reviewers say

### Manuals Viewer

[App page](https://appshunter.io/ios/app/manuals-viewer/id992174297)

Access and save manuals for Colorado Time Systems products for offline viewing. This app is ideal for quick troubleshooting without an internet connection.

**Highlights:** View product manuals, Download manuals, Save manuals for offline access, On-deck troubleshooting, Colorado Time Systems product support

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenCanyon.org

[App page](https://appshunter.io/ios/app/opencanyonorg/id6478461718)

Access a comprehensive offline database of canyons for planning and on-location use. Search, filter, and view detailed information, including GPS coordinates and community reports. Navigate to canyons using your preferred map application.

**Highlights:** Offline canyon access, Map-based canyon search, Advanced filtering and search, Detailed canyon information, Navigation integration, GPX export, Community trip reports

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

**In-app purchases:** none


## Frequently asked questions

### Is Manuals Viewer free?

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

### Is OpenCanyon.org free?

OpenCanyon.org is free to download, with no in-app purchases.

### Which has better reviews, Manuals Viewer or OpenCanyon.org?

Manuals Viewer and OpenCanyon.org are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Manuals Viewer or OpenCanyon.org have ads?

Neither Manuals Viewer nor OpenCanyon.org shows ads.

### Which is updated more often, Manuals Viewer or OpenCanyon.org?

Manuals Viewer ships an update every 3 months, and OpenCanyon.org every 2 months. Most recently, Manuals Viewer was updated on November 1, 2026 and OpenCanyon.org on November 4, 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.*