Effective from 18 October 2026
LightWise is free. A one-time “Remove ads” purchase through Google Play turns the ads off and supports further development.
Calculated results are guidance. Check them with a test shot before an important shoot.
The app has no account, and what you enter stays on your phone.
These terms do not limit your statutory rights as a consumer.
LightWise is developed and published by LightWise Labs, a sole trader based in the Czech Republic (“we”).
LightWise Labs
E-mail: play@janlochmann.com
The provider’s full details (name and address) are on the app’s page on Google Play, under App support.
By using the app you agree to these terms. You get the app from Google Play, so the Google Play Terms of Service also apply to the download and the purchase.
We grant you a free, non-exclusive and non-transferable right to use the app for your own purposes on devices you control.
You may not modify, decompile, redistribute or sell the app unless the law expressly allows it.
The app needs Android 7.0 or later and is intended for adults.
The app contains open-source components that are governed by their own licences; they are listed under More › About › Open source licences.
Calculations, tables and recommendations in LightWise are a guide for photography. They are based on generally accepted formulas and manufacturer data that we check carefully. Even so, they may contain errors or inaccuracies, and real results also depend on your equipment, materials and conditions. The app does not replace metering, a test shot or professional judgment.
To the extent permitted by applicable law, we are not liable for damage resulting from the use of the app’s results, such as failed photos or wasted photographic material. This does not affect consumer rights that cannot be excluded by contract, or liability for death or personal injury or for harm caused intentionally or by gross negligence.
If you find an error, please report it via More › About › Report a problem or by e-mail. We review reports and aim to include fixes in a coming update.
The free version shows a banner from Google AdMob. What data is processed for it and how you can set your ad choices is described in the Privacy policy.
“Remove ads” is a one-time purchase through Google Play. You see the price in Google Play before you confirm. The purchase turns the ads off with no time limit; every other feature stays free for everyone.
The purchase is tied to your Google account. On a new phone it comes back on its own when you sign in with the same account, or you can restore it under More › Remove ads › Restore purchase.
Google processes the payment. As a consumer in the EU you normally have 14 days to withdraw from a purchase of digital content; if you agree to immediate access when you buy, this right ends once access is given. Refunds also follow Google Play’s policies.
If the purchase does not work as it should, write to us at play@janlochmann.com; we handle complaints as the law requires, and your rights when something is faulty are not affected.
The texts, lessons, illustrations and design of the app are protected by copyright. Names of cameras, lenses and films may be trademarks of their owners and are used only to identify the gear; we are not affiliated with their makers. Gear data comes from the makers’ public specifications.
We keep improving the app, so some features may change; a “Remove ads” purchase stays valid. We may update these terms; we will publish the new version on this page and change the date at the top. Changes do not apply to purchases you have already made and never reduce your statutory rights. If you do not agree with a change, you can stop using the app and uninstall it at any time.
How the app handles data is described in the Privacy policy.
These terms are governed by the law of the Czech Republic. If you are a consumer, you keep the protection given to you by the mandatory laws of the country where you live.
The body competent for out-of-court settlement of consumer disputes is the Czech Trade Inspection Authority, Štěpánská 567/15, 120 00 Praha 2, Czech Republic, adr.coi.cz. Please write to us first, though; most things can be sorted out by e-mail.
If any provision of these terms is invalid, the others remain in force.
For questions, feedback and ideas, write to play@janlochmann.com.
© 2026 LightWise Labs · play@janlochmann.com · Privacy policy