minlag

Privacy, in plain English

minlag builds your plan on your iPhone. You don't need an account. Signing in adds backup and sync and sharing a trip; minlag AI works with or without it. This page says what we keep and why.

Stays on your iPhone

• Apple Health (optional): heart rate, HRV, steps, wrist temperature and your detailed sleep.
• Calendar: events are read on the iPhone. Their titles are never sent.
• Location and air pressure: used to notice take-off and landing. Never sent.
• Camera and photos: boarding passes, booking photos and the light check are read on the iPhone.
• Your own AI key: kept in your iPhone's Keychain. It never reaches us.

Some of it leaves the iPhone only when you choose, as described below.

What we store on our server (when you sign in or use minlag AI)

• Anonymous minlag ID (minlag AI without an account): the first time you use minlag AI, the app gets a random anonymous minlag ID from our server and keeps it in your iCloud Keychain, so your free answers and packs follow you to a new iPhone. It's linked to no email or name; we keep its AI use and purchase records (below), and its creation is noted in the sign-in log. If you sign in later, its answers and packs move to your account and the anonymous ID is deleted.
• Your account: email and name (or Apple's private relay address with Sign in with Apple), a scrambled form of your password if you set one, and your sleep and plan settings (for example your usual bedtime, and whether melatonin is on).
• Your trips: airports, times and flight numbers, so they sync between devices. If you share a trip, anyone with the link sees its name, its flights and your first name.
• Your plan log: the steps you mark Done, Later or Can't, take-off and landing times, check-in and fix results (as minutes), and, for a trip, the sleep times and daylight minutes the plan used. That last part comes from Apple Health or what you entered.
• AI use: for each AI answer, which feature, whether it worked, the model, its size and speed, and whether it came from your free answers or a pack. Plus a trip tag: a one-way scrambled code made from the trip, so we can count answers per trip. It can't be turned back into your trip. We don't keep your question or the answer unless you report it (below).
• Purchases: the App Store transaction ID, product and date, your AI answer balance, and a list of the packs added, so a pack is never added twice. We never see your card or Apple ID.
• Reports you send: your note, the app version, device model, iOS version and a list of what minlag did recently. No trip names, calendar events, booking text or Health values. Report this answer in Ask minlag sends that question and answer only.
• Sign-in log: time, result, email, IP address and device type. Deleted after 90 days.

Sent only when you choose

• Morning check-in: with AI help on, the numbers shown on the check-in (for example last night's sleep and resting heart rate), the tags you tapped and the trip's time zones. You can switch the numbers off on the check-in.
• Pasting a booking: the text you paste, so AI can read the flights. You check them before anything is saved. With AI help off it is read on the iPhone.
• Something changed? what you picked and the plan's steps around it. Never calendar titles.
• Ask minlag: off unless you turn it on. It sends your message and a summary of your trip: the plan, your body clock, today's steps, your taps, your flight log and Health numbers (sleep, heart rate, HRV, daylight, steps). Never calendar titles.

AI help asks first. minlag asks before the first AI request leaves your iPhone. To write an answer, minlag sends your question and the trip details it needs to minlag's server, which passes them to an AI service. With your own AI key, the request goes straight from your iPhone to your provider. With Apple's on-device model, nothing leaves the iPhone. Your plan never depends on AI. Nothing is kept after the answer except the usage record above. Turn AI help off any time in Settings, and nothing about your trips or health goes to any AI.

Weather

Real sky and the packing list use Apple Weather (WeatherKit). The app asks Apple for the forecast at your trip's airports, not where you are. No location permission is needed.

TestFlight

The beta runs on Apple's TestFlight. Feedback and crash reports you send through TestFlight come to us from Apple with your device details. Apple's own privacy terms cover TestFlight.

What we don't do

• No ads, no tracking across apps or websites, no selling or sharing your data.
• No third-party analytics.

Deleting your data

⚙︎ › Account › Delete account. This deletes your account, trips, plan log and reports from our server straight away. A safety copy made at that moment is removed after 30 days, and nightly backups roll over within 14 days. We keep AI use, purchase and pack records with your account removed from them, so a purchase can't be added twice. Sign-in log entries lose your email. If you use Sign in with Apple, deleting your account also tells Apple to revoke minlag's sign-in token.

Signed out, your trips and plan live only on your iPhone. Nothing goes to our server except a report you choose to send and, if you use minlag AI, your anonymous minlag ID with its AI use and purchase records. Deleting the app deletes your trips and plan.

Contact

Questions: minhsao@mintrix.net.