Terms of Use — Sun Path & Shadow

Last updated: 30 August 2026

These terms cover your use of the Sun Path & Shadow app. By installing or using the app you accept them. If you do not, please delete the app.

The app is provided by Anıl Sancar, an independent developer, contactable at anilsancarr@gmail.com.

1. What you get

You get a personal, non-exclusive, non-transferable licence to use the app on devices you own or control, for as long as these terms are respected.

You may not resell the app, rent it out, reverse engineer it, or extract its calculations to build a competing product. Ordinary personal and professional use of the numbers it produces — planning a photograph, a garden, a building, a holiday — is exactly what it is for and needs no permission.

2. What is free and what is paid

Free, permanently: the sun’s bearing, its height above the horizon, and the length of a shadow, for the current day. These are not a trial and they do not expire.

Paid: planning beyond today — any other date, any other place on earth, and saving places you check often.

Two ways to pay:

a monthly subscription, which renews until you cancel;
a one-time purchase, which never renews and never needs cancelling.

Both unlock exactly the same features. The difference is only how you pay.

3. Billing, renewal and cancellation

Purchases are made through Apple or Google, not through me. They take the payment, they set the price in your currency, they issue the receipt, and they handle refunds. I never see your payment details.

Prices are shown in the app before you buy, in your own currency, exactly as your store reports them. Apple and Google convert and adjust prices per country and may change them; the app always shows the current one.
A subscription renews automatically for another period unless you cancel first. On the App Store, Apple requires the cancellation to be at least 24 hours before the period ends, and takes the charge within the 24 hours before renewal. Google Play applies no such cut-off — cancelling any time before renewal prevents the charge. Cancel early either way rather than relying on the deadline.
Cancel in your own store account settings — on iOS, Settings → your name → Subscriptions; on Android, Play Store → Subscriptions. Deleting the app does not cancel a subscription. There is a link to the right screen inside the app’s own Settings.
Cancelling stops the next renewal. It does not end the period you have already paid for, and it does not refund it.
Refunds are requested from Apple or Google, and are granted at their discretion under their own terms. I cannot issue a refund for a store purchase and I cannot see whether one has been granted.
The one-time purchase is a single charge. It does not renew and there is nothing to cancel. You can restore it on a new device with the Restore Purchases button, using the same Apple Account or Google account.

Free trial

The monthly subscription may be offered with a free trial. Where it is, the app shows the trial’s length and the date the first charge falls due before you buy, and the exact terms are also shown on your store’s own confirmation sheet.

The trial is offered once per subscription group per Apple Account or Google account, family sharing included. If you have used it before, the app shows the ordinary price instead.
If you do not cancel before the trial ends, it converts to a paid subscription automatically and the first charge is taken.
Cancelling during the trial keeps your access until the trial period ends and prevents the charge.

4. What the app is, and what it is not

The app computes solar geometry — position and shadow length — from published astronomical algorithms, using the coordinate and moment you give it. It assumes a level, unobstructed horizon. It does not know about hills, buildings, trees, weather, cloud, atmospheric refraction beyond a standard correction, or anything else in front of you.

It is provided for general information and planning.

Do not rely on it for:

navigation, aviation, or maritime use;
surveying, legal boundary, right-to-light or planning determinations;
any decision where being wrong creates a risk to safety or property;
judging sun exposure, UV levels, or burn time — it says nothing about UV, and is not a medical or health device.

Sunrise and sunset times, twilight, and shadow lengths are estimates for an ideal horizon and will differ from what you observe. Treat the app as a good first answer, and verify anything that matters.

5. No warranty

The app is provided “as is” and “as available”, without warranties of any kind, express or implied, including fitness for a particular purpose and non-infringement. I do not warrant that it will be uninterrupted, error-free, or that every computed value is accurate for your situation.

Nothing here removes rights you have as a consumer under the law of your own country that cannot be excluded by agreement.

6. Limitation of liability

To the fullest extent the law allows, I am not liable for indirect, incidental, special or consequential loss, for lost profits, or for any loss arising from reliance on a value the app produced.

Where liability cannot be excluded, it is limited to the amount you actually paid for the app in the twelve months before the claim.

This does not limit liability for death or personal injury caused by negligence, or for fraud, where the law does not permit that limitation.

7. Changes

The app changes as it is developed; features may be added, altered or removed. If these terms change, the date at the top changes with them and the current version always lives at this address. If a change materially reduces what a paid purchase gives you, it will be described in the release notes.

8. Ending the agreement

You can end it at any time by deleting the app — remembering that deleting the app does not cancel a subscription, which must be cancelled in your store account.

I may end it if the licence terms in section 1 are breached.

9. Apple and Google

These Terms are between you and me. Apple and Google are not parties to them and are not responsible for the app or its contents.

Neither Apple nor Google has any obligation to provide maintenance or support for the app. Support comes from me, at the address below.
If the app fails to conform to any warranty that cannot be disclaimed, you may notify Apple and Apple will refund the purchase price, if any. To the maximum extent permitted by law, Apple has no other warranty obligation whatsoever.
I, not Apple or Google, am responsible for addressing any claim relating to the app — including product liability, any failure to conform to a legal requirement, and claims under consumer protection or privacy law.
I, not Apple or Google, am responsible for investigating and defending any third-party claim that the app infringes intellectual property rights.
You confirm you are not located in a country subject to a US Government embargo or designated as terrorist-supporting, and are not on any US Government prohibited-party list.
Apple and its subsidiaries are third-party beneficiaries of these Terms, and upon your acceptance Apple has the right to enforce them against you.

10. Governing law

These terms are governed by the laws of the Republic of Türkiye, and the courts of Türkiye have jurisdiction — without depriving you of the protection of the mandatory consumer law of the country where you live.

Your purchase is also subject to the terms of the store you bought it from.

11. Contact

anilsancarr@gmail.com

I read and reply to everything, usually within two working days.