# GPX Builder vs VBS UV

The clearest difference is review sentiment: VBS UV at 100% against GPX Builder's 0%. VBS UV also leads on rating (5.0 vs 3.8) and ads (none vs shown). GPX Builder's advantage is ratings volume (4 vs 1) and iOS requirement (15.5 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VBS UV holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 0% of GPX Builder's written reviews are positive against 100% of VBS UV's.

GPX Builder ships an update every 2 months, VBS UV every 6 weeks. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | GPX Builder | VBS UV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/gpx-builder/id963982625/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vbs-uv-index/id1179934658/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 7 MB | 6 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OurBigAdventure, LLC](https://appshunter.io/developer/562914290) | [Mark Spaulding](https://appshunter.io/developer/1166710709) |

## What reviewers say

### GPX Builder

[App page](https://appshunter.io/ios/app/gpx-builder/id963982625)

This utility app allows developers to simulate and record real-world GPS location data for testing purposes. Adjust location settings for accuracy and battery life, then export data as GPX or GeoJSON files. Includes carrier and connectivity data for comprehensive testing.

**Highlights:** Simulate GPS location data, Record real-world GPS tracks, Adjust location accuracy, Export as GPX or GeoJSON, Include carrier and connectivity data, Create custom test routes

**In-app purchases:** none


### VBS UV

[App page](https://appshunter.io/ios/app/vbs-uv-index/id1179934658)

This app provides UV-Index forecasts to help manage sun exposure. It offers a simple interface for users to check daily UV levels. More information about the VBS model is available online.

**Highlights:** UV-Index forecasts, Sun exposure management, Simple user interface, VBS model information link

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GPX Builder free?

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

### Is VBS UV free?

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

### Which has better reviews, GPX Builder or VBS UV?

VBS UV is rated higher. GPX Builder averages 3.8 out of 5 from 4 ratings, while VBS UV averages 5.0 from 1 ratings.

### Do GPX Builder or VBS UV have ads?

GPX Builder shows ads; VBS UV does not.

### Which is updated more often, GPX Builder or VBS UV?

GPX Builder ships an update every 2 months, and VBS UV every 6 weeks. Most recently, GPX Builder was updated on October 24, 2026 and VBS UV on October 18, 2026.

---

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