Privacy Policy

In the app

Your photos, videos and recipes

Sol develops every photo and video on your phone and saves it to your phone's photo library. Your recipes are kept inside the app on your phone. None of it is sent to us, and we can't see it.

When you share a recipe, only its name, its film and its settings go into the link, file or QR code, and they go only to whoever you send them to. Nothing about you, your photos or your phone travels with it. If you open a shared recipe on this website, the page reads it in your browser and we don't keep it.

Camera, microphone and location

• Sol uses the camera to take photos and videos, and the microphone to record sound with videos.
• Sol uses your location only if you turn on location in photos, to write where you took each photo or video into the file on your phone. It isn't sent to us.

No account

Sol has no sign-in and no account. We don't know who you are unless you write to us.

Purchases

Sol Pro is sold by Apple through the App Store and by Google through Google Play. They take the payment and tell the app whether you have Pro. We never see your name, email or card. Apple's or Google's privacy policy covers the payment.

Diagnostics, if you turn them on

When you set up Sol, and later in Settings, you can turn on Share crash reports and usage. It's off unless you turn it on, and nothing is sent while it's off. When it's on, Sol sends:

• Crash reports (through Sentry): where in Sol's code a crash or freeze happened, a short trail of what the camera was doing just before (such as which mode or film was in use), your phone model, its system version, Sol's version, and whether you have Pro.
• Usage counts (through TelemetryDeck): a few events, such as when Sol opens, when the Pro screen is shown, and how many photos and videos a session took and with which film. Each comes with Sol's version, your phone model, system version, language, region, time zone and some accessibility settings, and a random ID that Sol makes for this install. Turning diagnostics off deletes that ID.

Neither ever includes your photos, videos, file names, recipe names or location.

Feedback from the app

If you send feedback from Sol's Settings, we receive your message, the email address you give if you'd like a reply, and details about your phone and Sol (model, system version, Sol's version, language, free storage, Free or Pro, the camera and film in use, and Sol's camera settings). It is sent through Sentry, whether or not diagnostics are on.

On this website

Analytics

This website uses no analytics and sets no cookies.

The launch list

If you ask to hear when Sol is out, we email you a link to confirm your address. Until you confirm, nothing about your signup is stored: the confirm link itself carries it. The only thing kept before then is a scrambled (hashed) copy of your address and of your IP address, for up to a day, so the form can't be used to flood someone with emails.

Once you confirm, we keep your email address, which phone you use if you told us, when you confirmed, and which link to the site you came from. It's stored in Cloudflare D1, and the emails are sent through Resend. Every email has an unsubscribe link, and unsubscribing deletes your address from the list.

Feedback on the website

If you use the feedback form, we keep what it's about, your message, the email address you give if you'd like a reply, the page you sent it from and your browser's name and version. It's stored in Cloudflare D1, and a copy goes to our inbox through Resend. To stop the form being flooded, we also keep a scrambled (hashed) copy of your IP address for up to a day.

Hosting

This website is hosted by Cloudflare. Like any website, it receives standard request data, such as your IP address and browser, to deliver the pages and protect the site from abuse.

Who processes data for us

• Apple and Google sell Sol Pro through their stores and handle the payment. Their own privacy policies apply to it.
• Cloudflare hosts this website and stores the launch list and website feedback in Cloudflare D1.
• Resend sends the launch list's emails and forwards website feedback to us.
• Sentry receives crash reports and app feedback, as described above.
• TelemetryDeck receives usage counts, if you turn diagnostics on.

Some of these services are outside Hong Kong, so your data may be stored or processed in other countries. We only use providers that protect personal data to a standard comparable to Hong Kong law.

How we use it

• To email you about Sol's launch, if you joined the list: a heads-up before, and the launch email.
• To read and answer your feedback, and to fix what's wrong.
• To find and fix crashes, and to see which parts of Sol get used, if you turned diagnostics on.

We don't sell or rent your data, and we don't use it for advertising or to train AI models.

How long we keep it

• The launch list keeps your address until you unsubscribe.
• Feedback is kept while it's useful for improving Sol, and deleted when you ask.
• Scrambled copies of addresses and IP addresses used for rate limits are deleted after a day.
• Support emails are kept while needed to help you, then deleted.

Your rights

You can ask us to give you a copy of the personal data we hold about you, to correct it, or to delete it.

Email [SUPPORT EMAIL] and we'll reply within 30 days. Depending on where you live (for example the EU, the UK or California), you may have further rights, such as objecting to processing or complaining to your local data protection authority. In Hong Kong that's the Office of the Privacy Commissioner for Personal Data.

To delete what Sol keeps on your phone, delete the app. Photos and videos you saved to your photo library stay there until you delete them.

Children

Sol isn't meant for children under 13, and we don't knowingly collect their data. If you think a child has joined the launch list or sent us their details, email us and we'll delete them.

Changes

If we change this policy in a way that matters, we'll update the date above and say so on the website or in the app before the change takes effect.

Contact

Koji Studios
Hong Kong
[SUPPORT EMAIL]