Comparison

O2 Calendar vs LUKLAK

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

Head to head
About

O2 Calendar

Manage your schedule with this app, offering tools for events, appointments, notes, and daily tasks. Set custom reminders for your important activities and organize your day effectively.

Highlights
  • Event creation and management
  • Customizable event reminders
  • Daily task reminders
  • Note-taking functionality
  • Appointment scheduling
Features
Read full description

O2 Calendar là công cụ tốt nhất để quản lý công việc của bạn: Lịch, Sự kiện, cuộc hẹn, ghi chú và công việc hàng ngày. Tính năng, đặc điểm - Tạo và quản lý sự kiện - Nhắc nhở tùy chỉnh cho Sự kiện - Tạo nhắc nhở hàng ngày

About

LUKLAK

Features
Read full description

LUKLAK is the ultimate business application with a "Unified & Universal" approach, designed to revolutionize the way you work. With LUKLAK, you can unify your work and communication effortlessly, thanks to its real-time chat feature that's built into each task. You can now manage structured data of work management with unstructured, free-text chat discussion data in a single point of truth. The collaborative work management system on LUKLAK comes equipped with a powerful dashboard capability, so you can easily monitor the progress of your projects, all in one place. LUKLAK also offers a strong and versatile workflow and process management system that makes SOP (Standard Operating Procedures) a breeze. You can now streamline your processes and increase efficiency with ease. But that's not all! With LUKLAK, you don't need any coding skills to build your own specific feature. The no-code and low-code (on web app) feature allows citizen-developers to build custom features instantly, making it easy for everyone to contribute to the project. Take control of your business today with LUKLAK - the next-generation business application.

Screenshots

O2 Calendar4 screens
LUKLAK4 screens

Verdict

The call

The clearest difference is update cadence: O2 Calendar at every 4 days against LUKLAK's fortnightly. O2 Calendar also leads on iOS requirement (9.0 vs 13.0). 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

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

O2 Calendar ships an update every 4 days, LUKLAK fortnightly. Both last shipped on November 3, 2026.

Scorecard2 real differences · 6 level
O2 Calendar versus LUKLAK: the parameters behind the verdict, then further details
ParameterO2 CalendarLUKLAK
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 4 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size52 MB64 MB
Age rating4+4+
DeveloperO2 VN Tech.,JSCLuklak Joint Stock Company

In-app purchases

None

O2 Calendar

No in-app purchases

None

LUKLAK

No in-app purchases

Questions

Is O2 Calendar free?
O2 Calendar is free to download, with no in-app purchases.
Is LUKLAK free?
LUKLAK is free to download, with no in-app purchases.
Do O2 Calendar or LUKLAK have ads?
Neither O2 Calendar nor LUKLAK shows ads.
Which is updated more often, O2 Calendar or LUKLAK?
O2 Calendar ships an update every 4 days, and LUKLAK fortnightly. Most recently, O2 Calendar was updated on November 3, 2026 and LUKLAK on November 3, 2026.

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