Privacy
The short version: this site keeps no profile of you, and the documents you make stay on your computer.
1. Who is responsible for your data
The data controller is Zhongcheng Huang (黄忠诚), an individual developer based in mainland China. He is a person rather than a company, so there is no registered business address and no data protection officer to name. Every privacy question, access request and deletion request goes to myhama@hotmail.com, which is read by a person.
2. What is collected, and why
Personal data can arise in two places: the licence service, when you buy or when the add-in checks a licence key, and this web server, when it answers a request for a page. Neither of them sees the documents you write or the drawings you insert.
| What | Why it is held | Lawful basis |
|---|---|---|
| Your email address | The address given at checkout: the licence key and the receipt go there, and support replies go there | Performance of the contract |
| The licence key issued for an order, and whether it was refunded | So the key can be sent again if the order email is lost, and so a refund can be recorded | Performance of the contract |
| The record of what was bought | Billing history and support; the invoice itself is the payment provider's | Legal obligation (tax and accounting) |
| Web server logs | Address, time and page, kept by the hosting provider for security and to count visits | Legitimate interest (security) |
Cookies are used for none of this: see section 4.
3. Payments
Purchases are handled by Waffo Pancake, the payment processor and the seller of record. Card numbers are typed on Waffo Pancake's own checkout page and passed straight to the card networks; they are never sent to, or stored on, the seller's servers. What the seller holds is the fact that a payment was made and which licence it bought.
4. Cookies and analytics
These pages are static files served from this domain, and every element on them - the stylesheet, the icons and the drawings - comes from the same server you are reading.
That means there is nothing to consent to here.
No cookie is set while you read the site, and no analytics or advertising script runs on it.
5. The product and your documents
Your documents stay yours
Inserting a figure happens on your own computer. The text, the drawings and the file name stay in the document, wherever you keep it.
Telemetry in the add-in
The product reports nothing back about your work, so which drawings you insert and how often you open the pane are things the seller cannot see.
The classic template runs offline
It works entirely on your own computer: the library, the trial clock and the licence key are all checked there.
The optional licence service runs at www.helpsciencer.com and keeps only the licence key issued for an order, together with the email address that order was placed with; payments are handled by Waffo (the merchant of record), which also receives your email address for receipts.
6. Sharing
Personal data is not sold, and it is not given to advertisers. It reaches another company only in these cases:
- Waffo Pancake, the payment processor and seller of record, receives what it needs to take a payment and issue an invoice.
- The hosting provider that runs this site and the licence service processes the requests and keeps the server logs.
- An email provider carries the licence key and the receipts to your inbox.
- A lawful request from a court or a regulator is answered as far as the law requires.
- If the product were ever handed to another developer, the data would move with it, and this page would say so first.
7. How long it is kept
| What | Kept for | Then |
|---|---|---|
| The order's email address and the licence key issued for it | While the order may still need support | Deleted on request - see section 8 |
| Rate-limit records | 48 hours | Removed by the daily clean-up |
| Checkout records | 180 days | Removed by the daily clean-up |
| Payment notifications from the processor | 730 days | Removed by the daily clean-up |
| Download links | 30 days after the link expires | Removed by the daily clean-up |
| The invoice and the payment record | Held by Waffo Pancake as the seller of record | Their policy applies |
| Web server logs | Rotated on the hosting provider's own schedule | Rotated out |
A trial runs for 7 days and is counted on your own computer, so it leaves nothing behind here. Buying either version leaves the licence key record above, together with the invoice.
8. Your rights
Writing to myhama@hotmail.com exercises any of these, and a reply comes within 30 calendar days:
- Know what is held, and be given a copy of it.
- Have inaccurate data corrected.
- Have the data held about you deleted.
- Have processing restricted, or object to it.
- Receive the data in a machine-readable format.
- Withdraw consent, where consent was the basis for something.
If a request is handled badly, a complaint can be made to the data protection authority where you live.
9. Security
Traffic is encrypted with HTTPS. Download links are stored hashed, so a copy of the database is not a set of working links, and the service is written to hold as little as it can. If a breach affects your rights, you are told within 72 hours of it being discovered, and the regulator is told at the same time.
10. Where the data goes
The licence service runs on a host outside mainland China, and the payment processor sits outside it too, so buying, or a licence check from the add-in, involves a transfer across a border. Those transfers rely on the safeguards in the providers' data processing terms, including the standard contractual clauses where they apply.
11. Children
The product is sold to teachers and other adults, and the licence service holds an order placed by an adult. Anyone under 18 should use the product through a school or a parent. Information that turns out to come from a child is deleted as soon as it is noticed - write to the address above and it will be removed.
12. Changes to this policy
A material change is announced at least 15 days before it takes effect, by email to the address used at checkout, and the date at the foot of this page moves with it. It is worth re-reading when a new major version arrives.
13. Contact
Write to myhama@hotmail.com and a person answers. A privacy request and a licence request both land in the same mailbox, and nothing there is forwarded to a third party.
Last updated: 2026-10-07. Data controller: Zhongcheng Huang (黄忠诚), an individual developer in mainland China.