Effective date: 12 November 2026
1. Scope and acceptance
Weatherglass Pro is a Mac app made and sold by Yang Yang HOANG LE, an individual developer in Vietnam who runs Yangopen (“we”). By downloading or using the app, or getting a licence key, you agree to these terms. The activation page also uses your Yangopen account, which the Yangopen terms of service cover.
2. What the app does
Weatherglass Pro draws the real weather over your Mac desktop and lets you choose what falls. It needs no account to use (see the privacy policy).
3. The free trial
- A trial key unlocks every feature for 7 days from the moment it is made. It is free; nothing is charged, now or later.
- Each Yangopen account and each Mac gets one trial. The key works only on the Mac whose code was used to make it.
- When the trial ends, the app stops until you buy a licence.
4. Buying a licence
A Weatherglass Pro licence is a one-time purchase, not a subscription, and you are never charged again. It works for good on every 1.x version; a later version 2.0, if there is one, may need a paid upgrade.
- Personal: 1 person, 2 Macs. US$7.
You buy with a Yangopen account, on the Weatherglass Pro page or on your Account page. Bank transfers go through ApiPay; cards go through Polar, the merchant of record for card payments. We never see your card number. After paying, open the app on your Mac, click Activate, then click Approve on yangopen.com. Each Mac takes one place; reinstalling on the same Mac takes no extra place. To move to another Mac, remove the old one under Account → Apps (one removal per two Macs every 6 months), or e-mail [email protected]. A removed Mac gives its place back; the licence on it is still this purchase's and still under these terms.
Refunds. You get a 7-day trial before you buy. Within 14 days of buying, if Weatherglass Pro does not work on your Mac, or you were charged twice, e-mail [email protected] for a full refund. A refund revokes the licence: the account can activate no more Macs, and the keys on Macs already activated stop unlocking from the next app update.
5. Not allowed
Sharing or selling licence keys, getting around the licence or the trial (for example by changing the Mac's clock), and copying, reverse-engineering or redistributing the app, except where the law allows it.
6. Updates and availability
Supported macOS versions and features may change as the app is updated.
7. Intellectual property and open source
The app, its design and its name belong to Yangopen or its licensors. Open-source parts keep their own licences.
8. Limitation of liability
To the extent the law allows, the app is provided as is, and we are not liable for lost data or indirect damage. Nothing in these terms limits your rights under consumer protection law. These terms are governed by the law of Vietnam.
9. Contact
Send questions about these terms to [email protected].