D vs SmartXY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
This app uses location-based services and intelligent devices to enhance child safety. It connects parents to a cloud platform for real-time monitoring and security.
- Location-based security
- Cloud platform integration
- Intelligent device support
- Child safety monitoring
- Parental controls
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"D-Tracker" is a highly interactive mobile application based on location-based security services. It combines powerful D-Cloud platform with highly intelligent devices to help children caring parents to better guard their baby's safety.
SmartXY
This app connects to smart glasses for features like real-time translation, a teleprompter, AR navigation, and an AI assistant. It enhances the smart glasses experience with various utility functions.
- Device connection
- Simultaneous interpretation
- Teleprompter
- AR navigation
- Audio transcription
- AI assistant
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SmartXY is the core application of the Xingyi AR99 smart glasses, providing basic device connection and glasses setting, simultaneous interpretation, teleprompter, AR navigation, audio transcription, AI assistant and other functions.
Screenshots
Verdict
The clearest difference is rating: SmartXY at 5.0 against D's 2.0. D's advantage is iOS requirement (8.0 vs 15.6). On price, ratings volume, update cadence and ads 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.
SmartXY holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
D ships an update every 3 weeks, SmartXY monthly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | D | SmartXY |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 55 MB | 176 MB |
| Age rating | 4+ | 4+ |
| Developer | ZKXT Information Technology Co., Ltd. | 勇 梁 |
Customer experience
D
SmartXY
In-app purchases
D
No in-app purchases
SmartXY
No in-app purchases
