# Grid Ref CH1903 vs KMZ Viewer

The clearest difference is price: Grid Ref CH1903 at Free against KMZ Viewer's $2.99. Grid Ref CH1903 also leads on rating (5.0 vs 1.0) and iOS requirement (11.0 vs 15.6). KMZ Viewer's advantage is in-app purchases (none vs 1). On ratings volume, update cadence, ads and device support there is nothing between them.

Grid Ref CH1903 is free to download; KMZ Viewer costs $2.99 up front. Grid Ref CH1903 sells 1 one-off in-app purchase. KMZ Viewer asks for nothing beyond the download.

Grid Ref CH1903 holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Grid Ref CH1903 ships an update every 12 months, KMZ Viewer every 8 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Grid Ref CH1903 | KMZ Viewer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/grid-ref-ch1903/id1146848398/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/kmz-viewer-converter/id1150898780/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 8 months** |
| Monetization | **Free** | Paid |
| Size | 5 MB | 5 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mike Irving](https://appshunter.io/developer/393933736) | [m sagar](https://appshunter.io/developer/1473103865) |

## What reviewers say

### Grid Ref CH1903

[App page](https://appshunter.io/ios/app/grid-ref-ch1903/id1146848398)

This app helps you find your precise location within the Swiss Coordinate System (CH1903). It displays your Swiss Grid Reference and WGS84 Latitude/Longitude, along with accuracy readings. Share your location easily via text or email.

**Highlights:** Swiss Grid Reference display, WGS84 Latitude and Longitude, Location accuracy readings, Share location via text/email, Operates internationally, Graphical guide to Swiss Coordinate System

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go Ad Free | $0.99 | one-time |


### KMZ Viewer

[App page](https://appshunter.io/ios/app/kmz-viewer-converter/id1150898780)

Easily load, view, and convert KMZ files directly on a map. Import files via email, cloud storage, links, or iTunes File Sharing. Create custom markers with detailed information and share your KMZ files with others.

**Highlights:** Load KMZ files on map, Convert KMZ files, Create custom map markers, Import via email, cloud, links, View marker details (description, images, URLs), Offline and online functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Grid Ref CH1903 free?

Grid Ref CH1903 is free to download, with in-app purchases available.

### Is KMZ Viewer free?

KMZ Viewer costs $2.99, with no in-app purchases.

### Which has better reviews, Grid Ref CH1903 or KMZ Viewer?

Grid Ref CH1903 is rated higher. Grid Ref CH1903 averages 5.0 out of 5 from 2 ratings, while KMZ Viewer averages 1.0 from 1 ratings.

### Do Grid Ref CH1903 or KMZ Viewer have ads?

Neither Grid Ref CH1903 nor KMZ Viewer shows ads.

### Which is updated more often, Grid Ref CH1903 or KMZ Viewer?

Grid Ref CH1903 ships an update every 12 months, and KMZ Viewer every 8 months. Most recently, Grid Ref CH1903 was updated on October 9, 2026 and KMZ Viewer on October 10, 2026.

---

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