GPX Builder vs VBS UV
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GPX Builder
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.
- 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
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*Continued use of GPS running in the background can dramatically decrease battery life. Developing apps that require location services can be a challenge when the data you receive in the simulator is so much different than what a device receives in the real world. Are your location settings battery friendly enough to solve the problem you are working on or could you do with a little less accuracy? GPX Builder allows you to adjust the settings of the location services to match your project, then record real location data as you create your own test routes for your simulator. You can name each route and email the GPX data back to your development team. We now include carrier and connectivity data so you can generate GPX or GeoJSON files with real world data for unreliable connectivity. We hope this will help you to understand your user's experience better so you can create amazing features. You can export your location data as a GPX file or in GeoJSON format. Points are recorded at a rate of one per second to match the playback speed of the iOS Simulator and give more realistic results when simulating location data. You can still record raw data only by choosing that option in the settings.
VBS UV
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.
- UV-Index forecasts
- Sun exposure management
- Simple user interface
- VBS model information link
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The UI-Index app is a simple app to help us manage the sun exposure of our campers. For more information about this model of VBS, head to https://vbsonline.org
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | GPX Builder | VBS UV |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.5 — better | 26.0 |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | OurBigAdventure, LLC | Mark Spaulding |
Customer experience
GPX Builder
VBS UV
In-app purchases
GPX Builder
No in-app purchases
VBS UV
No in-app purchases









