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Pro is billed through Google Play, so that's where you manage or cancel it. In ADHDose, go to Settings and tap Manage subscription. You can also open the Play Store app, tap your profile picture, then Payments and subscriptions, then Subscriptions.

When you cancel, Pro stays on until the end of the period you've already paid for.

Go to Settings in ADHDose and tap Restore purchase. It looks for Pro on the Google account your phone is signed in to, so make sure that's the account you bought it with. If it still doesn't show, email us and we'll look into it.

No. ADHDose works without one, and your records live on your phone. Signing in with Google is optional. It keeps an encrypted backup, so you don't lose your history when you change phone.

Your records live on your phone unless you sign in. To clear them, go to Settings and tap Delete all my data.

If you signed in for backup, go to Settings, then Account, and tap Delete account. Your access is removed as soon as you confirm. We'll hold on to your backup for 30 days in case you change your mind, but after that it's permanently erased. Sign back in within 30 days to cancel.

Deleting your account doesn't cancel Pro, so cancel your subscription in Google Play first.

Our privacy policy has the detail on what we keep and for how long.

On Android, ADHDose can read sleep, resting heart rate, weight and blood pressure from Health Connect. It only reads, it never writes anything back, and you can disconnect it in Settings whenever you like. You can also enter all of it by hand.

The stimulants and non-stimulants most often prescribed in the UK and US, including Elvanse, Concerta XL, Ritalin, Medikinet, Equasym XL and dexamfetamine, and US names such as Vyvanse and Adderall XR. You'll find the full lists on our UK and US medication pages.

Non-stimulants like atomoxetine and guanfacine don't follow a daily curve, so there's no live chart for them, but dose logging, the journal and the Clinician Summary all work the same. If yours isn't covered, email us and tell us what you take.

Android phones running Android 8.0 or later, from Google Play. The iPhone app is on its way.

On Android, yes. In ADHDose, go to Settings and tap Add to home screen. Or touch and hold an empty spot on your home screen, choose Widgets, then find ADHDose.

It shows your curve and today's dose, with a Log dose button. With Pro the curve is coloured by zone and shows your wear-off time.

Yes. Go to Doses and tap Add a second dose, then choose the medication, strength and time your prescriber has given you. A second dose of the same medication, or a top-up of a different one, gets its own reminder, and your curve shows both.

Some medications are licensed once a day, so only add a second dose your prescriber has asked you to take.

Yes, tap Taken on the reminder. If you tap it before the dose is due, or within an hour after, it's logged straight away. Any later and the app opens the dose sheet with the scheduled time ready, so you can confirm it or change it.

Yes. In Doses, find Your supply on your dose card and tap Set up, then count what you have once. Every dose you log comes off the count, and you choose how many days' notice you want. When it's close, you'll get a nudge to ask for your next prescription.

When you collect your next prescription, tap Picked up to add it.

On the free version it comes around the time your medication is expected to wear off. With Pro it comes an hour before your usual wear-off time, and asks you to log the time when you feel it start to fade. You can turn it off in Settings.

Food can slow how quickly some medications are absorbed. After a high-fat meal, for example, Elvanse peaks about an hour later (Elvanse SmPC, section 5.2). Tell the app you'd eaten and it moves your peak to allow for that, where it applies to your medication.

For amphetamine-based medicines such as Elvanse and dexamfetamine, vitamin C can shorten how long a dose lasts, and antacids such as sodium bicarbonate can stretch it out (Elvanse SmPC and Amfexa SmPC, section 4.5). Logging them means any pattern shows up in your own data over time.

Both questions are optional, so skip them if you're not sure. If you're wondering whether anything you take affects your medication, ask your pharmacist or prescriber.

No. ADHDose is a tracking tool, not a medical device, and it won't ever suggest changing your dose. Anything to do with your medication is a conversation for you and your prescriber.