TrainNavigator vs Quad Defects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TrainNavigator
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Simple DCCex controller for model railroad -multiple throttles to control locos -turnouts controller defined in DCCex setup -layout editor with turnout control -auto-discovery of your DCCex server The app needs only access to local network to connect to DCCex permission. Terms of use: https://trainnavigator.fisharea.eu/terms.html
Quad Defects
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Quad Defects is designed to streamline maintenance, quality checks, and registering defects. Easily capture, document, and upload images or videos of part defects such as wear, dents, or breakdowns. Update and access work instruction videos for specific parts or processes, ensuring standardized operations and clear communication between field staff and supervisors.
Screenshots
Verdict
The clearest difference is in-app purchases: Quad Defects at none against TrainNavigator's 1. Quad Defects also leads on update cadence (daily vs every 4 days). On price, ads, device support and iOS requirement 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. TrainNavigator sells 1 in-app purchase, starting at $7.99 per year. Quad Defects asks for nothing beyond the download.
TrainNavigator ships an update every 4 days, Quad Defects daily. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.
| Parameter | TrainNavigator | Quad Defects |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 28 MB | 32 MB |
| Age rating | 4+ | 17+ |
| Developer | Michal Kajaba | Autosys Industrial Solutions Private Limited |
In-app purchases
TrainNavigator
- TrainNavigator Premium$7.991 Year
Quad Defects
No in-app purchases
