Privacy Policy

Caffeine Tracker - SipLog

Last updated: 7 November 2026

SipLog is a caffeine tracker for iPhone, built so that your caffeine log stays with you. It's made by SGWNI, a one-person app studio (“I”, “me”). There are no accounts, I don't ask who you are, and I can't see what you drink.

What stays on your devices

• Your caffeine log. The drinks you log, their amounts and times, the drinks you save and your settings are stored on your iPhone. If iCloud is on, they sync between your devices through your own private iCloud account. I have no access to it.
• Apple Health. If you allow it, SipLog saves each drink to Apple Health as dietary caffeine, and updates or removes it there when you edit or delete the drink. If you turn on the sleep report (SipLog Pro), SipLog reads your sleep from Apple Health to compare it with your caffeine. This all happens on your iPhone. Health data is never sent to me or anyone else, and is never used for advertising or marketing.
• Widgets and Live Activities. A short summary of your day, such as how much caffeine is in your system and when you'll be sleep-ready, is shared with SipLog's widgets and Live Activity on your iPhone.
• Reminders. The caffeine cut-off reminder is scheduled on your iPhone. No server is involved.

SipLog never asks about your health, such as pregnancy, medication or medical conditions, and doesn't store that kind of information.

What I receive

• Anonymous usage statistics. SipLog uses TelemetryDeck to count how the app is used: when it's opened, when onboarding is started or finished, when a drink is logged with its type (such as coffee or tea) and where it was logged from (such as the app or a widget), which features are used (such as month trends or CSV export), and when the SipLog Pro screen is shown or closed, or a trial or plan is started. These signals don't include your name, email address, caffeine amounts, times or any Health data. TelemetryDeck doesn't store IP addresses and uses an anonymous, hashed identifier that can't be traced back to you.
• Subscriptions. Payments are handled by Apple. SipLog uses RevenueCat to check whether you have SipLog Pro. RevenueCat receives your App Store purchase receipt, basic device information and a random identifier created by the app. I don't receive your name, Apple Account or payment details.

There's no advertising, no tracking across other apps or websites, and nothing is sold or shared.

Your choices

• Delete a drink in SipLog and it's removed from your log, your other devices and Apple Health.
• Change Apple Health access in the Health app under your profile › Apps › SipLog.
• Turn the cut-off reminder and Live Activity on or off in SipLog's Settings, and notifications in the iPhone Settings app.
• To remove everything, delete SipLog from your iPhone and delete its iCloud data in Settings › your name › iCloud › Manage Storage.

Your rights

Depending on where you live, including under the UK and EU General Data Protection Regulation, you have the right to ask what information is held about you, to have it corrected or deleted, and to object to how it's used. Your caffeine log never reaches me, so I hold none of it. I use the anonymous statistics because it's in my legitimate interest to understand how the app is used and improve it; TelemetryDeck processes them on my behalf. Requests about App Store purchases go to Apple, which holds them.

Children

SipLog isn't directed at children under 13.

This website

This website doesn't use cookies, analytics or advertising trackers. It's hosted by Vercel, which keeps standard server logs to run and protect the service.

Changes to this policy

If this policy changes, the new version will be posted here with a new “last updated” date.

Contact

Questions or requests about privacy: hello@veglog.app