Comparison

GPX Builder vs DTrol

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

*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.

About

DTrol

Control NAD processors and receivers remotely via WiFi. Manage power, volume, mute, source selection, and tuner presets across multiple zones. Customize settings and launch source apps for a seamless audio-visual experience.

Highlights
  • Power control
  • Volume adjustment
  • Mute function
  • Source selection
  • Tuner presets
  • Multi-zone support
  • User customization
Features
Read full description

DTrol turns your iPhone and iPad into a fast, reliable, two-way remote for your network-connected NAD and Anthem A/V processors and receivers — controlling power, mute, volume, source, and tuner presets on all your zones. That's it — and that's probably all you need most of the time. DTrol is a zone controller: it focuses on the functions you reach for every day and does them well — just like remotes used to be. **Control Every Zone** Power, mute, volume, source, and tuner presets — zone by zone, across multiple processors and receivers. **Make It Yours** Rename zones and sources, adjust their details, and set up links that launch your source apps. Changes live in DTrol only — nothing on your equipment is modified. **Two-Way and Live** DTrol shows the real state of your equipment, not just the last button you pressed. It stays in sync with what's playing and lets you know if a device stops responding. **Direct and Private** DTrol talks to your equipment directly over your home network. There's no account, nothing in the cloud, and no personal data collected. Your setup stays on your device. **Your Setup Carries Over** Upgrading from an earlier version of DTrol? Your servers, zones, and settings come with you automatically — nothing to set up again. **Supports** - Known to support: NAD T175, T175 HD, T765, T775, T785, T187, T777, M15, M15 HD; Anthem AVM 50v and Statement D2v (and variants - the legacy AVM control protocol) - Designed to also support: NAD T755; Anthem AVM 20, AVM 30, AVM 40, AVM 50 - Likely supports other models that speak the same NAD or Anthem legacy protocols - Your processor or receiver must be reachable on your home network — via its Ethernet port if it has one, or through a device that bridges your network to its RS-232 port, such as the Global Caché iTach IP2SL, iTach WF2SL, or Flex - Controlled devices must have a static IP address — this keeps DTrol fast and stable. If a device's IP address changes, re-add it in DTrol. - For more help with network configuration, see the support page: https://dtrol.fastfiveproducts.com/ **Setup** With your processor/receiver and your iPhone or iPad on the same network, tap "+" in DTrol to add your equipment as a DTrol "Server" — you'll need its static IP address and port. DTrol queries the device and sets up your Zones and Sources automatically; afterward you can adjust Zone names, Source names, and other details in Settings. DTrol is free. It requires iOS 18 and a local-network connection to your equipment. DTrol and its author have no affiliation with NAD Electronics, an international division of Lenbrook Industries Limited ("NAD"), or with Anthem. This app is not endorsed by, supported by, or in any other way connected with NAD or Anthem. NAD and Anthem are trademarks of their respective owners.

Screenshots

GPX Builder4 screens
DTrol3 screens

Verdict

The call

The clearest difference is price: DTrol at Free against GPX Builder's $0.99. DTrol 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 18.0). On 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

CostPrice · In-app purchases · Ads · Monetization

DTrol is free to download; GPX Builder costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DTrol holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 4 level
GPX Builder versus DTrol: the parameters behind the verdict, then further details
ParameterGPX BuilderDTrol
Price$0.99Free — better
Rating3.8 (4 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.5 — better18.0
Further details — not scored
Size7 MB1 MB
Age rating4+4+
DeveloperOurBigAdventure, LLCFast Five Products LLC

Customer experience

GPX Builder

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

DTrol

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GPX Builder

No in-app purchases

None

DTrol

No in-app purchases

Questions

Is GPX Builder free?
GPX Builder costs $0.99, with no in-app purchases.
Is DTrol free?
DTrol is free to download, with no in-app purchases.
Which has better reviews, GPX Builder or DTrol?
DTrol is rated higher. GPX Builder averages 3.8 out of 5 from 4 ratings, while DTrol averages 5.0 from 1 ratings.
Do GPX Builder or DTrol have ads?
GPX Builder shows ads; DTrol does not.
Which is updated more often, GPX Builder or DTrol?
GPX Builder ships an update every 2 months, and DTrol every 2 months. Most recently, GPX Builder was updated on October 29, 2026 and DTrol on October 17, 2026.

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