Terms of Use — ExposureCast
Covers: the Android app “ExposureCast”
Effective: 4 November 2026 · Version: 1.3
Language: This is a translation. The German version (https://www.rooksbury.com/exposurecast/nutzungsbedingungen) prevails.
These terms set out what applies between you and the provider when you use ExposureCast. They are deliberately short. Buying Pro features is a separate contract concluded through Google Play (section 5).
1. Provider
Michael Schubert, trading as Rooksbury
Rilkestr. 4
86199 Augsburg
Germany
Email: support@rooksbury.com
Further details are in the imprint.
2. What ExposureCast is — and what it is not
ExposureCast estimates how good the chances are for certain photo and sky events, for example aurora, the Milky Way, fog, a colourful sunset or an eclipse. It is based on weather forecasts, astronomical calculations and other data (section 6).
- Every figure is a probability, never a certainty. A high score means “good chances”, not “this will happen”. Forecasts can change at short notice and can be wrong.
- We do not promise that an event will happen or that you will be able to see or photograph it. A wasted trip or a missed opportunity is a risk that comes with any forecast.
- ExposureCast does not replace official weather and severe-weather warnings. In Germany, binding warnings are issued by the Deutscher Wetterdienst (German Weather Service); in other countries, by the national weather service.
3. Safety comes first
Many opportunities shown by ExposureCast take place outdoors, often at night, in remote places or in unusual weather. You decide whether and where to go, and you are responsible for your own safety. Never put yourself in danger to take a photo.
- Thunderstorms: Lightning also strikes kilometres ahead of and behind a storm. Watch thunderstorms only from a safe building or a closed car, not from summits, ridges, open ground, the water or under isolated trees. Follow official severe-weather warnings.
- Solar eclipses and the sun: Never look at the sun without suitable eclipse glasses, not even when it is almost completely covered. Never point a camera, telephoto lens or binoculars at the sun without a suitable solar filter in front of the lens. This can permanently damage your eyes and destroy the camera.
- Terrain, darkness and weather: Watch out for drop-offs, paths, wildlife, cold, storms, fog, flooding and tides. Tell someone where you are going, and take a light, warm clothing and a charged phone. Respect access bans, closures and the rights of landowners.
4. Using the app
You may use ExposureCast for your own purposes, private or professional. This right is non-exclusive and non-transferable. All rights in the app, its texts, graphics and name remain with the provider or the respective rights holders.
You may not
- decompile or reverse-engineer the app, except where the law expressly permits it;
- circumvent protection or unlock mechanisms, for example to use Pro features without buying them;
- query, scrape or overload our servers or those of our data sources by automated means;
- send unlawful or harmful content through the feedback function.
In the case of serious or repeated violations, we may block access to our server services.
5. Free version and Pro
Free version. The free version contains no advertising.
Pro. Additional features are unlocked with the “ExposureCast Pro” subscription. The app shows you before the purchase which features are included.
- Term and price. The subscription is available monthly or yearly. The app and Google Play show the price in your currency before the purchase; the price Google Play shows you at the time of purchase applies.
- Free trial for new subscribers. New subscribers can try Pro free of charge for 14 days. Google Play decides whether you count as a new subscriber; the app shows the trial only if Google Play offers it to you. If you cancel within the 14 days, you pay nothing. Otherwise the trial then converts into the paid subscription at the price shown to you when you signed up.
- Automatic renewal. The subscription renews automatically for the same term at the end of each term until you cancel it.
- Cancellation. You can cancel at any time in Google Play. Cancellation takes effect at the end of the current term; Pro remains active until then.
The purchase is made through Google Play. In the European Economic Area, your contracting party for the purchase is Google, not the provider. Google states in its terms for the European Economic Area: “Content on Google Play is offered by Google Commerce Limited”. There, by purchasing you enter into a contract with Google Commerce Limited. Outside the European Economic Area, the Google Play terms of your country apply; they state who your seller is. In any case:
- Payment, invoicing and refunds are handled by Google under the Google Play terms.
- Right of withdrawal: Google explains whether and how you can withdraw from a purchase and when this right ends for digital content in the Google Play terms for your country; for the European Economic Area: https://play.google.com/intl/en_ie/about/play-terms/.
- You cancel subscriptions on Google Play, not with the provider. Directly to subscription management: Manage subscriptions.
- Uninstalling the app does not end a subscription. Cancel it in subscription management.
If you have questions about the Pro features themselves, for example if a feature you bought is not unlocked, we are happy to help at support@rooksbury.com.
6. Data sources and attribution
ExposureCast processes data from these sources further: we calculate chance scores from it, aggregate values and display them graphically. Radar images are laid over the map semi-transparently without changes to their content (the colour legend is drawn by the app); all other data has been modified.
| Source | Used for | Licence |
|---|---|---|
| Open-Meteo — “Weather data by Open-Meteo.com” | Weather forecast (main source), rain forecast, tides | CC BY 4.0 |
| MET Norway (Norwegian Meteorological Institute) — “Based on data from MET Norway” | Fallback forecast if Open-Meteo fails | CC BY 4.0 and NLOD 2.0 |
| Deutscher Wetterdienst — “Quelle: Deutscher Wetterdienst” (source: German Weather Service) | Rain radar (radar images shown unchanged), Germany and border areas only | CC BY 4.0 |
| KNMI (Royal Netherlands Meteorological Institute) — “© KNMI” | Rain radar for the Netherlands and surroundings | CC BY 4.0 |
| Finnish Meteorological Institute — “© Finnish Meteorological Institute” | Rain radar for Finland | CC BY 4.0 |
| Environment and Climate Change Canada — “Data Source: Environment and Climate Change Canada” | Rain radar for Canada and the USA | ECCC Data Services End-use Licence |
To check its own forecasts, ExposureCast also analyses public webcam images. The images are not stored and not shown in the app; only sky colour values calculated from them are kept (an adaptation of the images). Sources: images of the New Zealand GeoNet programme, © Earth Sciences New Zealand, GeoNet, licensed under CC BY 3.0 NZ — “We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing images” —, weather camera images by Fintraffic — “Source: Fintraffic / digitraffic.fi, license CC 4.0 BY” —, camera images of the U.S. Geological Survey (USGS) and the Alaska Volcano Observatory as well as FAA weather cameras, provided through the USGS VolcView API (works of the U.S. Government, with the USGS's permission), highway camera images by DriveBC (British Columbia Ministry of Transportation and Transit) — “Contains information licensed under the Open Government Licence – British Columbia” — and foto-webcam.eu (with the operators' permission).
None of the providers named in this section endorses ExposureCast.
The app also lists its sources in the settings. We cannot vouch for the accuracy, availability or continued existence of these sources.
7. Availability
We try to keep ExposureCast running reliably, but we do not owe any particular availability. Maintenance, disruptions at data sources or hosting, and security measures can temporarily restrict features. We may develop, change or discontinue features. Pro features already paid for will not be significantly degraded without good reason.
8. Liability
We are liable without limitation for damage arising from injury to life, body or health, for damage caused intentionally or by gross negligence, and under the German Product Liability Act (Produkthaftungsgesetz).
In the case of slight negligence, we are only liable if we breach an obligation that is essential for the purpose of use and on which you may rely; liability is then limited to the typical, foreseeable damage. Otherwise, liability for slight negligence is excluded.
A forecast not coming true is not in itself a breach of duty (section 2).
9. Changes to these terms
The version currently in force is available at https://www.rooksbury.com/exposurecast/terms. We will inform you in the app in advance of significant changes. If you do not agree with a change, you can stop using the app at any time; you then cancel a subscription on Google Play (section 5).
10. Applicable law and contact
German law applies. If you are a consumer and habitually resident in another country, you retain the protection of the mandatory consumer protection provisions of that country.
How we handle your data is set out in the privacy policy: https://www.rooksbury.com/exposurecast/privacy. Information on consumer dispute resolution is in the imprint.
Questions and feedback: support@rooksbury.com