Privacy Policy

Your location

If you allow it, Moonglance uses your approximate location to show the Moon where it is in your sky: how high it is, when it rises and sets, and which way to turn to face it. Moonglance asks your phone only for an approximate location.

All of this is worked out on your phone. Your location is kept on your phone, for the app and its widget, until you delete the app, and Moonglance never sends it anywhere. Moonglance also reads your phone’s compass, on the phone, to move the Moon toward where it really is.

To turn location off on an iPhone, go to Settings → Moonglance → Location. On Android, go to Settings → Apps (or Apps & notifications) → Moonglance → Permissions → Location. Moonglance still shows the Moon’s phase without it.

Anonymous usage statistics

Moonglance records anonymous statistics about how the app is used: for example that it was opened, that the Moon sheet was opened or the time scrubber used, and whether you let Moonglance use your location (never the location itself). With them go the device model and type, the iOS or Android version, the app version and build, language and region settings, and how the app was installed. The statistics carry no persistent identifier, only random values that live in the app’s memory while it runs and are replaced when it starts again or comes back after six hours away, so they cannot be traced back to you.

So that we can count how many people use the app, and see whether people who started in a given month keep using it, your phone remembers two things: the month (never the date) you first opened Moonglance, and when you last did each thing we count. Both are deleted with the app, except that an iPhone keeps the month in its Keychain, where it stays even if you delete the app. The statistics include that month and whether something happened for the first time ever, that day, that week or that month; the times your phone keeps never leave it.

Your IP address is used only to work out which country the statistics come from, and is then discarded; it is not stored. The statistics are handled by PostHog, which acts only on our behalf and stores the data in the European Union, for up to seven years. In the app, PostHog uses no cookies and no cross-app tracking. We rely on our legitimate interest in knowing how the app is used.

Apple and Google

If you choose to share analytics with app developers on your iPhone (Settings → Privacy & Security → Analytics & Improvements), Apple may share crash reports and usage statistics for Moonglance with us. On Android, if you share usage and diagnostics with Google, Google may share crash reports and app performance data for Moonglance with us. Apple’s and Google’s privacy policies cover that data.

This website

Cloudflare hosts this website, and like any host it sees your IP address to send you the pages. The Moon at the top of the home page is worked out in your browser, from your device’s clock and time zone, and nothing about it is sent anywhere.

In the EU, the EEA, the UK, and California, Colorado, Connecticut, New Jersey and Oregon, the site measures nothing until you choose Allow analytics. Elsewhere it measures from the start, and you can opt out with one click. A Global Privacy Control signal counts as an opt-out everywhere. To know which applies, Cloudflare works out from your IP address which country or state you are in and tells the site, which keeps none of it.

While analytics are on, to see which pages people read and which links they follow, the site records page views, clicks and scrolling, with your browser, device type, language and time zone. They go to PostHog with the app’s statistics, and are kept the same way. PostHog keeps a random ID for your browser in a cookie, for a year after your last visit with analytics on, or until you turn analytics off. Your choice is kept in your browser: where you were asked first, it lasts six months and then you are asked again; elsewhere it is kept until you clear it. You can change it at any time with Website privacy choices at the bottom of any page.

To send you the pages and offer you the right choice, we rely on our legitimate interest in running the site. For its analytics we rely on your consent where the law asks for it, and elsewhere on our legitimate interest in knowing how the site is used.

Email, and who acts for us

If you email us, our email provider holds your address and message for us, for as long as we need them to answer you. We rely on our legitimate interest in answering you.

PostHog, Cloudflare and our email provider act only on our behalf. Some processing may happen outside the EEA, under safeguards such as standard contractual clauses.

Who is responsible?

Moonglance is made by Jesko von Dessauer, a sole proprietor registered in the Netherlands and trading as Luami.

• Legal name: Jesko von Dessauer
• Trading name: Luami
• KVK number: 88447405
• Business correspondence:
• Email:

Your rights

The app’s statistics carry no lasting identifier, so we cannot tell which are yours. The website’s carry a random ID for your browser, so we can find what it recorded only if you give us that ID. You can ask to access, correct, delete, restrict or receive a copy of your data, object to how we use it, and withdraw your consent at any time. Ask us anything about privacy at the email above. You can also complain to a data protection authority, such as the Dutch Autoriteit Persoonsgegevens.

Changes

If Moonglance ever handles data differently, this page changes first, with a new date at the top.