HHDLINK vs Syn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HHDLINK
This app facilitates secure and transparent supply chain management through smart lock integration. It enables electronic data handover and secure delivery, tracking movements and providing real-time alerts for route deviations.
- Remote and Bluetooth lock/unlock
- Dynamic and static password options
- NFC card configuration
- Device parameter setting and modification
- Trajectory tracking and playback
- Route deviation and fence alarms
- E-waybill data saving
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HHDLINK is an APP for logistics supply chain. The smart locks can be linked the application scenarios of the supply chain to realize electronic data handover and secure delivery throughout the whole process which offering a transparent supply chain. The types of smart locks include G-Lock, B-Lock, L-Lock, M-locks, N-Lock,S-Box, T- seals, and Smart Gateways. The functions of each type of product are as follows: G- Lock Lock/Unlock: support remote or Bluetooth operation Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified Trajectory: support to trace and playback the moving paths Fence: route deviation and fence lock/unlock various alarms E-waybill: E-data can be saved and write into devices Video: lock, unlock and tamper will be recorded and upload to server and support remote check. B-Lock Lock/Unlock: support remote or Bluetooth operation Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified Fence: route deviation and fence lock/unlock various alarms Record: support to check the lock/unlock and tamper history L- Lock Lock/Unlock: support remote or Bluetooth operation Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified Fence: route deviation and fence lock/unlock various alarms Reservation command: supports issuing pre-command to unseal LORA locks or set parameters at a specified time. S-Box Lock/Unlock: support remote or Bluetooth operation Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified Trajectory: support to trace and playback the moving paths Fence: route deviation and fence lock/unlock various alarms E-waybill: E-data can be saved and write into devices Video: lock, unlock and tamper will be recorded and upload to server and support remote check. M- Lock Lock/Unlock: support remote or Bluetooth operation Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified N-Lock Lock/Unlock: support remote or Bluetooth operation Record: support to check the lock/unlock and tamper history T-Seal Setting: devices parameters can be read and modified Trajectory: support to trace and playback the moving paths Fence: route deviation and fence lock/unlock various alarms E-waybill: E-data can be saved and write into devices Gateway Slave Locks: support remote command or RFID card to configure slaves locks Password: dynamic password, static password, and authorized sharing NFC: NFC cards configurable, support on-stie and remote operation both ways Setting: devices parameters can be read and modified Trajectory: support to trace and playback the moving paths Fence: route deviation and fence lock/unlock various alarms E-waybill: E-data can be saved and write into devices Video: lock, unlock and tamper will be recorded and upload to server and support remote check.
Syn
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Customer Relationship Management system that integrates sales, service, and marketing to help businesses maximize customer value.
Screenshots
Verdict
The clearest difference is update cadence: Syn at every 2 weeks against HHDLINK's every 5 months. HHDLINK's advantage is iOS requirement (12.0 vs 14.0). On price, ads, 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.
HHDLINK ships an update every 5 months, Syn every 2 weeks. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.
| Parameter | HHDLINK | Syn |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 62 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen HHD Technology Co.,ltd | Synergos Systems Company Limited |
In-app purchases
HHDLINK
No in-app purchases
Syn
No in-app purchases









