Terms of Use

Purin Cute Expense Tracker · Last updated 12 October 2026

Purin Cute Expense Tracker (“Purin”) is operated by Cheung Pak Wai (“we”, “us”). These terms are the agreement between you and us. By installing or using the app, you accept them. If you don’t, don’t use the app.

What Purin is

An app for recording your own spending and looking back at it by day, month, category and payment source. It is a personal record-keeping tool. It is not accounting, tax or financial advice, and it does not connect to your bank or cards.

Your records are your responsibility

Your expenses are stored only on your phone. We keep no copy, so we cannot restore them. If you lose your phone, uninstall the app or clear its storage, they are gone unless you exported them first.

Use “Export all data” in Settings to keep your own copy, and keep that file somewhere safe: it is not encrypted. What you enter is up to you, and we are not responsible for decisions made using the totals the app shows.

If you turn on the password lock and forget the password, we cannot recover or reset it. The only way back in is to clear the app’s storage, which deletes your expenses.

Using the app

We give you a personal, non-exclusive licence to use Purin on your own devices. Please don’t sell or redistribute the app itself, or pass off a modified copy as ours. The pudding character, the stickers and the other artwork in the app are ours; please don’t reuse them without asking.

Purin Club membership

Purin is free to use, with no ads and no subscription. Purin Club is an optional purchase:

One payment, not a subscription. You pay once and are not charged again. The price is shown in the app before you buy, in your local currency.
What you get: a Purin Club membership card in the app, with a member number. It is a decorative extra. It does not unlock any of the expense-tracking features, which are free for everyone.
The “300 years” of membership is our way of saying it does not expire. It lasts for as long as the app is offered.
Payment and refunds are handled by Google Play, under Google Play’s terms and refund policy. A refunded membership is removed from the app.
Restoring it: the membership belongs to the Google account that bought it, and is restored automatically when you install the app again with that account.

Your privacy

Purin has no account, and your expenses stay on your phone. The privacy policy explains exactly what the app stores and where.

Availability

We may change, update or stop offering the app. The app is provided as it is, without warranties of any kind, to the extent the law allows.

Liability

To the extent the law allows, we are not liable for indirect or consequential loss, including the loss of records stored in the app. Nothing here limits liability that cannot legally be limited, including for death, personal injury or fraud. If you are a consumer, you keep every right your local law gives you, and nothing in these terms takes those away.

Changes to these terms

If we change these terms we will update this page and the date at the top. Continuing to use Purin after a change means you accept it.

Law and contact

These terms are governed by the laws of Hong Kong, and the Hong Kong courts have jurisdiction over any dispute. If you are a consumer elsewhere, this does not take away the protections of the law where you live.

Questions and bug reports: hello@purin-expense-tracker.com.