Work · alternatives · 2026

24 alternatives to BlockOff : Calendar Defense

Defend your time

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. BlockOff : Calendar Defense launched in 2023; newer entries below may have overtaken it.

1. 1
   LifeWork Calendar▲175

   Automatically defend personal time on your work calendar

   2020 · its alternatives →

2. 2
   KosmoTime▲189

   Smart calendar for time blocking & focused work

   2021 · its alternatives →

3. 3
   Habits by Reclaim.ai▲165

   Auto-block time on your calendar for all your routines

   2020 · its alternatives →

4. 4
   Calendarist▲184

   Time blocking companion for Google Calendar

   2020 · its alternatives →

5. 5
   Timeblocks▲171

   Stay on top of your meetings with this agenda timer

   2018 · its alternatives →

6. 6
   Daily Time Blocker▲138

   Maximize productivity

   2023 · its alternatives →

7. 7
   Akiflow - Time Blocking for Notion▲249

   Manage your time and tasks all in one place

   2022 · its alternatives →

8. 8
   Tiblo▲113

   Turn your tasks into calendar blocks

   2023 · its alternatives →

9. 9
   Aimful▲159

   Protect your time from unnecessary meetings, in Google Cal

   2022 · its alternatives →

10. 10
    CalendarPush▲6

    Automatically block off time on your other calendars.

    2021 · its alternatives →

11. 11
    1Block▲64

    Highly customizable app blocking and app timer for Android

    2019 · its alternatives →

12. 12
    Clocking - Work Tracker▲82

    Protect your free time from over hours

    2022 · its alternatives →

13. 13
    Tactical Time Blocker▲94

    Daily highlights & adaptive time blocking template

    2021 · its alternatives →

14. 14
    In Your Face▲87

    Never be late to your meetings again!

    2019 · its alternatives →

15. 15AB
    Auto-block personal events on your work calendar▲13

    2020 · lifeworkcalendar.com · its alternatives →

16. 16
    Time Off Calendar▲102

    Accurate and simple PTO calendar

    2021 · its alternatives →

17. 17
    Smart 1:1 Meetings▲131

    Effortless scheduling for your regular 1:1s

    2021 · its alternatives →

18. 18
    Calendarly▲134

    Turn your calendar into a live Lock Screen wallpaper

    Feb 2026 · getcalendarly.com · its alternatives →

19. 19
    Single Clock▲137

    Set reminders, forget time zones!

    2017 · its alternatives →

20. 20
    Notion time blocking HQ▲45

    Manage your time and schedules effortlessly

    2023 · its alternatives →

21. 21
    Countdown▲92

    Simple event countdown timer

    2018 · its alternatives →

22. 22
    Willed Calendar▲149

    Display your day's schedule on a clock

    2019 · its alternatives →

23. 23
    Sidebar Calendar▲166

    Keeping you on schedule!

    2025 · apps.apple.com · its alternatives →

24. 24
    Same Day Blocker▲13

    No more same day meetings

    2022 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →