Comparison

HHDLINK vs Syn

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

Head to head
About

HHDLINK

Features
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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.

About

Syn

Features
Read full description

Customer Relationship Management system that integrates sales, service, and marketing to help businesses maximize customer value.

Screenshots

HHDLINK4 screens
Syn3 screens

Verdict

The call

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 ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HHDLINK ships an update every 5 months, Syn every 2 weeks. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

Scorecard2 real differences ยท 4 level
HHDLINK versus Syn: the parameters behind the verdict, then further details
ParameterHHDLINKSyn
PriceFreeFree
Update frequencyEvery 5 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 โ€” better14.0
Further details โ€” not scored
Size62 MB22 MB
Age rating4+4+
DeveloperShenzhen HHD Technology Co.,ltdSynergos Systems Company Limited

In-app purchases

None

HHDLINK

No in-app purchases

None

Syn

No in-app purchases

Questions

Is HHDLINK free?
HHDLINK is free to download, with no in-app purchases.
Is Syn free?
Syn is free to download, with no in-app purchases.
Do HHDLINK or Syn have ads?
Neither HHDLINK nor Syn shows ads.
Which is updated more often, HHDLINK or Syn?
HHDLINK ships an update every 5 months, and Syn every 2 weeks. Most recently, HHDLINK was updated on October 5, 2026 and Syn on October 13, 2026.

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