Comparison

DBD+ vs Prezlock

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

Head to head
About

DBD+

Unlock doors using your mobile phone via Bluetooth technology. Remotely share access with family and friends, and receive alerts for abnormal movement or low battery. Experience a convenient and efficient new way of life.

Highlights
  • Bluetooth door unlocking
  • Remote key sharing
  • Zero-distance contact with family/friends
  • Abnormal movement alarm
  • Weak current smart tips
Features
Read full description

A don't have to take the key out of APP.Allows you to easily use a mobile phone unlock using bluetooth technology;Can remote sharing keys at the same time, realize you zero distance contact with family and friends in space and time;And abnormal movement alarm, weak current smart tips and individual character, more waiting for digging, you just to give you a convenient and efficient new way of life.

About

Prezlock

Control and manage Bluetooth-enabled locks directly from your smartphone, eliminating the need for physical keys. Securely lock, unlock, and share access with friends and family, while tracking usage history and battery levels.

Highlights
  • Keyless locking and unlocking via smartphone
  • Manage multiple locks individually
  • Share and revoke access with time limits
  • Track GPS location and usage history
  • Monitor lock battery levels
  • High-level encryption for security
Features
Read full description

*Manage and operate your Prezlock by your smartphone and eliminate the use of keys. *The Prezlock app is used to operate and manage Bluetooth enabled Prezlock with these features: Locking and unlocking: Once you download the Prezlock app, you can simply use your smartphone to lock and unlock your locks without using a key. The app utilizes high level ACE 128-bit encryption and Bluetooth 4.0 technology to control the locks with maximum security. Managing locks: The app can add and delete locks off the system with ease by following simple instructions. The app can individually manage numerous locks at the same time for easy management. Sharing Access: Share or revoke access of your locks with your family and friends using the app and your phone. You can set time limits and number of lock openings on the apps by either sending a shared code to their own Prezlock app, or just simply send them an encrypted password for combination opening. Each lock can be tailored individually for accessibility according to date, time, or individual guest usage. You may grant full time access to your spouse or family member, while setting a designated time limit use for a temporarily guest. GPS location and usage history: Track the location your lock is being used via the app’s GPS locating system as well as to monitor locking and unlocking activities by each identified individual guest, utilising the app’s history function. Battery Level: The app shows the battery level of the lock once connected with the lock.

Screenshots

DBD+4 screens
Prezlock4 screens

Verdict

The call

The clearest difference is rating: DBD+ at 2.3 against Prezlock's 1.8. DBD+ also leads on update cadence (every 2 months vs every 9 months) and review sentiment (30% vs 14%). On price, ads, in-app purchases and monetization model 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

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

ReceptionRating · Positive reviews · Number of ratings

DBD+ holds the better App Store score, 2.3 against 1.8. That said, the two scores are not equally well evidenced: DBD+ has 57 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 30% of DBD+'s written reviews are positive against 14% of Prezlock's.

UpkeepUpdate frequency

DBD+ ships an update every 2 months, Prezlock every 9 months. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
DBD+ versus Prezlock: the parameters behind the verdict, then further details
ParameterDBD+Prezlock
PriceFreeFree
Rating2.3 (57 ratings) — better1.8 (8 ratings)
Positive reviews30.0% of reviews — better14.3% of reviews
Number of ratings57 — better8
Update frequencyEvery 2 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod, Apple Watch — better
Requires iOS9.0 — better13.0
Further details — not scored
Size33 MB51 MB
Age rating4+4+
DeveloperShenzhen Dragon Brothers Digital Lock Co., Ltd.Innova Ideas Ltd

Customer experience

DBD+

All ratings55 ratings
Positive32.7%
Neutral3.6%
Negative63.6%
Written reviews30 reviews
Positive30.0%
Neutral10.0%
Negative60.0%

Prezlock

All ratings8 ratings
Positive12.5%
Neutral12.5%
Negative75.0%
Written reviews7 reviews
Positive14.3%
Neutral0.0%
Negative85.7%

In-app purchases

None

DBD+

No in-app purchases

None

Prezlock

No in-app purchases

Questions

Is DBD+ free?
DBD+ is free to download, with no in-app purchases.
Is Prezlock free?
Prezlock is free to download, with no in-app purchases.
Which has better reviews, DBD+ or Prezlock?
DBD+ is rated higher. DBD+ averages 2.3 out of 5 from 57 ratings, while Prezlock averages 1.8 from 8 ratings.
Do DBD+ or Prezlock have ads?
Neither DBD+ nor Prezlock shows ads.
Which is updated more often, DBD+ or Prezlock?
DBD+ ships an update every 2 months, and Prezlock every 9 months. Most recently, DBD+ was updated on November 3, 2026 and Prezlock on November 3, 2026.

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