Comparison

Duall Master vs Booking Office

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

Head to head
About

Duall Master

Features
Read full description

The DeMasterPro app provide functionality to make your phone as smart key, which can open the door lock by tap to the door reader or even remotely. Within the app user can: - Tap to the reader at the gate to open the door - Open door using QR code - Open the door remotely from the app - View status of the door in realtime from anywhere - View access log of the users in the door gate every time, from anywhere - Access time attendance report - Activate/deactivate emergency situation conveniently and precisely

About

Booking Office

This tool helps companies optimize meeting room usage by providing a clear view of room availability and reservation schedules. It allows users to create schedules, invite colleagues, and sync with Google Calendar for seamless planning. Gain insights into meeting room utilization to make informed decisions about resource allocation.

Highlights
  • View meeting room availability
  • Create and manage reservations
  • Invite team members
  • Google Calendar synchronization
  • Meeting room usage statistics
  • Organization-wide booking
Features
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Booking Office - Professional and efficient meeting room management. Your company has many meeting rooms, but sometimes you can't find a suitable one for your schedule. Sometimes you plan to meet with your team at a certain time, but the meeting rooms are already occupied, or you don't know how the meeting rooms have been used to arrange a reasonable meeting time for your team. Then you need Booking Office - A scheduling tool that helps you optimize the meeting rooms in your company. With Booking Office - You will see a list of meeting rooms along with the reservation schedule of other members of the company so that you can arrange the most appropriate meeting time with the schedule of other teams in the company. Allowing you to create a schedule and invite other employees to participate. Invite other members to join your organization to book your meeting rooms together. Synchronize the calendar on the meeting room with your Google Calendar with the invited members to participate in the meeting. Provide complete statistics on the number of hours of meetings of the company to decide to add new meeting rooms. Booking Office is developed and operated by Morsoftware JSC. For further information, please contact huong.nguyenvan@morsoftware.com

Screenshots

Duall Master4 screens
Booking Office4 screens

Verdict

The call

Duall Master and Booking Office are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

UpkeepUpdate frequency

Duall Master ships an update fortnightly, Booking Office every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
Duall Master versus Booking Office: the parameters behind the verdict, then further details
ParameterDuall MasterBooking Office
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.012.0
Further details — not scored
Size78 MB48 MB
Age rating4+17+
DeveloperDUALi Inc.DANG HUNG LE

In-app purchases

None

Duall Master

No in-app purchases

None

Booking Office

No in-app purchases

Questions

Is Duall Master free?
Duall Master is free to download, with no in-app purchases.
Is Booking Office free?
Booking Office is free to download, with no in-app purchases.
Do Duall Master or Booking Office have ads?
Neither Duall Master nor Booking Office shows ads.
Which is updated more often, Duall Master or Booking Office?
Duall Master ships an update fortnightly, and Booking Office every 3 weeks. Most recently, Duall Master was updated on October 25, 2026 and Booking Office on October 24, 2026.

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