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Half Birthday Calculator

Chrome extension by chbary1 · Lifestyle · Entertainment

A Chrome extension in Lifestyle · Entertainment with 5 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
5
Rating
not rated yet
Users, last 16 days
+1
Version
1.0.0
Updated in the store
2026-05-03
Published
2026-05-03
Manifest
V3
Browser access
No permissions declared

How it has moved

Users
+1 since 31.08
4-5 · 7 readings
  1. 2026-08-314
  2. 2026-09-035
  3. 2026-09-044
  4. 2026-09-065
  5. 2026-09-074
  6. 2026-09-094
  7. 2026-09-155
Users
+1 since 31.08
4-5 · 7 readings
  1. 2026-08-314
  2. 2026-09-035
  3. 2026-09-044
  4. 2026-09-065
  5. 2026-09-074
  6. 2026-09-094
  7. 2026-09-155

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

We have not read this listing's manifest since we started keeping permission names. The counts above come from the last time we did.

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

chbary1 publishes 3 listings we track, 22 users between them. Listed website: halfbirthdaycal.com.

  1. REM to PX Converter chbary1 · Productivity · Developer · published 2026-04-13 10 users ★ 5.0
  2. PX to REM Converter chbary1 · Productivity · Developer · published 2026-04-16 7 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. FlyingDays Describes nearly the same job, smaller audience 5 users
  2. Birthday Manager Describes nearly the same job, smaller audience 47 users
  3. Lời Chúc Sinh Nhật Hay Describes nearly the same job, smaller audience 3 users
  4. Birthday Calculator Describes nearly the same job, smaller audience 5 users
  5. Days Until Halloween Describes nearly the same job, smaller audience 573 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.