# GTViewer vs DE Streetlights

The clearest difference is rating: GTViewer at 3.8 against DE Streetlights's 2.3. GTViewer also leads on update cadence (fortnightly vs every 4 months). DE Streetlights's advantage is iOS requirement (15.1 vs 17.0). 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.

GTViewer holds the better App Store score, 3.8 against 2.3. Both are backed by a comparable volume of ratings — 4 and 6 respectively.

GTViewer ships an update fortnightly, DE Streetlights every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | GTViewer | DE Streetlights |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gtviewer/id905970171/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/de-streetlights/id1537876721/reviews) |
| Number of ratings | 4 | **6** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free | Free |
| Size | 25 MB | 73 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Graphic Technologies, Inc.](https://appshunter.io/developer/460458003) | [TerraGo](https://appshunter.io/developer/894862292) |

## What reviewers say

### GTViewer

[App page](https://appshunter.io/ios/app/gtviewer/id905970171)

This application allows users to download and view geospatial data on Apple devices without an internet connection. It functions similarly to a web-based counterpart but is designed for offline use.

**Highlights:** Offline geospatial data viewing, Downloadable data, Apple device compatibility, Geospatial data visualization

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

**In-app purchases:** none


### DE Streetlights

[App page](https://appshunter.io/ios/app/de-streetlights/id1537876721)

A customizable and field-proven platform for managing smart streetlight projects. It offers an out-of-the-box solution that can be tailored to specific project needs, workflows, and branding.

**Highlights:** Smart streetlight project management, Field-proven solution, Customizable platform, Workflow integration, Branding options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GTViewer free?

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

### Is DE Streetlights free?

DE Streetlights is free to download, with no in-app purchases.

### Which has better reviews, GTViewer or DE Streetlights?

GTViewer is rated higher. GTViewer averages 3.8 out of 5 from 4 ratings, while DE Streetlights averages 2.3 from 6 ratings.

### Do GTViewer or DE Streetlights have ads?

Neither GTViewer nor DE Streetlights shows ads.

### Which is updated more often, GTViewer or DE Streetlights?

GTViewer ships an update fortnightly, and DE Streetlights every 4 months. Most recently, GTViewer was updated on November 1, 2026 and DE Streetlights on November 3, 2026.

---

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