Effective from 16 October 2026
LightWise has no account, no server of its own and no analytics. What you enter in the app stays on your phone.
Only two things in the app use the internet: the ad banner from Google AdMob and the “Remove ads” purchase through Google Play.
In the EU, the EEA, the UK and Switzerland you decide in Google’s consent form what Google may do with data for ads. You can change your choice at any time in More › Privacy › Ad privacy settings.
Once you buy “Remove ads”, the ad library is not started at all, so no data goes to the ad network.
LightWise is developed and published by LightWise Labs, a business based in the Czech Republic.
LightWise Labs
E-mail: play@janlochmann.com
The developer’s full details (name and address) are on the app’s page on Google Play under App support. Write to the e-mail above about anything concerning your privacy.
The app stores only on your phone:
your gear: your own cameras, lenses, films and ND filters, and your favourite cameras;
the Scene (the camera, lens and values the tools work with) and your pinhole camera;
the settings, your progress in the Academy and the Photo playground, and the history of exposure comparisons.
We have no access to these data and the app sends them nowhere. You can delete them in More › Data › Delete all data or by uninstalling the app.
Backup. If backup is turned on in Android, your gear, settings and progress are included in the backup to your Google account and in the transfer to a new phone. Google runs this backup under your account; you can turn it off in your phone’s settings.
The free version shows a banner at the bottom of some screens. It is provided by Google AdMob, a service of Google Ireland Limited (Gordon House, Barrow Street, Dublin 4, Ireland) for users in the EEA and Switzerland, and of Google LLC elsewhere.
When a banner loads, Google’s ad library in the app may collect:
your device’s advertising ID;
your IP address, from which an approximate location can be derived;
information about the phone and the app, such as the model, Android version, language and app version;
how ads are shown and tapped;
diagnostic data about how the ad library works.
Google uses these data to show and measure ads, to limit how often you see the same ad and to prevent fraud; to personalise ads only with your consent. Google processes them as an independent controller under its own privacy policy; see also how Google uses information from apps that use its services.
Consent. In the EU, the EEA, the UK and Switzerland the app first shows Google’s consent form (Google User Messaging Platform, a consent management platform certified by Google). If you do not agree to personalised ads, Google may show non-personalised or limited ads that use less data. The legal basis is your consent (Article 6(1)(a) GDPR); for some purposes Google relies on legitimate interest, which you can object to in the same form. You can change your choice at any time in More › Privacy › Ad privacy settings.
Advertising ID. You can reset or delete it in your phone’s settings (usually Settings › Privacy › Ads or Settings › Google › Ads, depending on the phone). Google’s own ad settings are at myadcenter.google.com.
From Google we receive only aggregated reports, such as the number of ads shown and the earnings, never data about you.
You buy “Remove ads” through Google Play. Google handles the payment; we never see your card or payment details. The app learns from Google Play only whether you own “Remove ads”, remembers it on your phone and checks it with Google Play each time it starts.
Google Play gives us the order information we need for the sale, refunds and taxes (for example the order number, date, price and country). The legal basis is the performance of the contract and our legal obligations (Article 6(1)(b) and (c) GDPR); we keep this information as long as accounting and tax law requires. Payments are also covered by the Google Payments privacy notice.
After a while the app may offer Google Play’s own rating window. Your rating goes straight to Google Play under your Google account; the app does not learn whether or how you rated it.
More › About › Report a problem and Contact open your e-mail app with our address. “Report a problem” fills in the app version, Android version and phone model, which you can change or remove before sending. Nothing is sent until you send the e-mail yourself.
We use your e-mail address and message only to answer you and fix the problem. The legal basis is our legitimate interest in handling your message (Article 6(1)(f) GDPR). We keep the correspondence only as long as needed to resolve it and then delete it.
Sharing pictures and tables uses Android’s share menu; you choose where they go and we see nothing.
The voice countdown in the timer uses the text-to-speech engine on your phone; the app passes it only the countdown to be spoken.
Lessons, the glossary and the camera database are part of the app and work offline.
Crash reports: LightWise contains no crash reporting of its own. If you allow it in your phone’s settings, Google Play may collect crash reports; we see only anonymous statistics from them.
Internet access and network state: the ads and the purchase.
Advertising ID: the ads.
Google Play billing: the purchase.
Vibration: the click of the dials and the end of the timer.
Keep awake (wake lock): background tasks of the ad library.
LightWise has no access to your location, camera, microphone, contacts, photos or files.
LightWise is intended for adults and is not directed at children. We do not knowingly collect data from children.
Google may process ad data outside the EEA as well, in particular in the USA. Google LLC is certified under the EU–US Data Privacy Framework and also uses the European Commission’s standard contractual clauses.
Under the GDPR you have the right to access your data, to have it corrected or erased, to restrict its processing, to object to it and to data portability. You can withdraw your consent to ads at any time in More › Privacy › Ad privacy settings; this does not affect processing before the withdrawal. Write to us at play@janlochmann.com.
You can also lodge a complaint with a supervisory authority: in the Czech Republic the Office for Personal Data Protection (Úřad pro ochranu osobních údajů), or the authority in your own EU country.
If the app starts handling data differently, we will update this policy before releasing that version and change the date at the top.
© 2026 LightWise Labs · play@janlochmann.com · Terms of use