Why am I not seeing my full history upfront just after subscribing?

It's because we can access only your current history on MAL. Entries old than 21 days are hidden in your MAL public history.
But after subscribing, we'll keep saving your activities continuously, even if it is not visible from your MAL public history anymore, will be stored on your profile here. Along the way, you'll have your full history on MAL Heatmap.

What frequency my history is updated?


How the activities are calculated?

Let's suppose that you have the following history:

You started watching Nihon Chinbotsu 2020 at Aug 19, in this example, you'll have 5 activities at Aug 19 and 6 activities at Aug 20, 5 episodes of Nihon Chinbotsu and 1 episode of FLCL Progressive.

Be aware that we compute the first entry of the show as current position. This means, for example, if you subscribe when you are in episode 63 of a show, the number of activities on that day will be 63. After that, we'll compute the difference from the last position, and so, new episodes will be registered in parallel to your MAL activity.

How can I use the BB Code?

Every time we update your history, a new image from your activities calendar will be generated.
You can copy the BB Code and put in your profile page or signature on myanimelist.net.

Why my calendar image is not updating on MAL?

MAL caches images for a period, so it can take even 7 days to the updated image appear on MAL.
You can use the calendar image URL on other places as well, each site has its own cache policy, but the majority of them the images are update instantaneously.

What happens if I change my username on MAL?

If you have signed in with your MAL account, we will create a link between your heatmap and MAL account.

Currently we only sync profile information when you sign in. To force your profile on MAL Heatmap please sign out and then sign in back. That will pull the recent username, profile picture, ect.

Previously, the accounts were not linked therefore renaming a user used to be discouraged. Since OAuth with MAL account has been introduced that's no longer an issue, just make sure to sign in first if your profile is 2+ years old.

What is the time zone used?

When you sign in we will store the same timezone set on your MAL account and use that as reference for the current date when capturing your MAL entries. To force updating your timezone, sign out from MAL Heatmap and sign in back.

This is important to ensure consistency between your MAL history and your activities on MAL Heatmap since MAL displays history dates relative to the user's time zone.
So, when you have some entry in your MAL history like: 5 hours ago, we will use the current time on the user's time zone to calculate the corresponding date.

The calendar range is also calculated using the time zone.