Email Luke@faultycompassstudio.com. It is read by a person, so please say which phone you are using and what happened.

Almost everything the app knows is stored only on your phone — your challenge, pantry, collection, settings and diet. Uninstalling the app deletes all of it, and you can also clear it from your device’s app settings at any time without uninstalling. The unlock of every pack is the exception: it belongs to your Google account or Apple Account, not your phone, and comes back when you reinstall.

If you agreed to share usage statistics, Google holds those too, and you have two options:

• In the app. Open Settings (the gear at the top right of the Challenge tab) and turn Share usage statistics off. That stops any further collection and replaces the random ID the statistics were attached to, so what was already collected can no longer be connected to your device. That doesn’t delete it.
• By email. Write to Luke@faultycompassstudio.com asking us to delete your analytics data, and we will. The statistics aren’t linked to a name, so we can’t pick out yours: we ask Google to delete everything the app collected over the period, yours included. You don’t need an account, and you don’t need to explain why.

There is no account to delete, because the app does not have accounts.

I missed a day. Have I ruined it?

No. On Cooking an unsigned day becomes a rest day, or ends your streak once the week’s rest days are used, and the challenge carries on. On Fitness and Impossible it starts the challenge again from day 1, though Impossible uses the week’s rest day first. Everything you’ve collected stays.

Can I change my diet or allergies mid-challenge?

You can change them between challenges, once every thirty days. Your existing collection is kept and shown as its own era rather than being deleted or merged.

I lost my collection.

The app keeps everything on the device, so uninstalling or clearing app data loses it. On a new phone, Android’s own backup may bring it back if backup was on in your old phone’s settings. The app has no cloud backup of its own yet. If this happened to you, please write in anyway — it is useful to know.

How do I stop the app collecting statistics?

Open Settings (the gear at the top right of the Challenge tab) and turn off Share usage statistics. See the privacy policy for exactly what is and is not collected.

What do I get if I buy?

The base sets are free. One purchase unlocks every other pack, including every pack released later, on every diet. You can see every card in every pack before you buy, and nothing you pay for is random.

I bought the unlock but the packs aren’t showing.

Some payment methods take a while to go through. The packs unlock as soon as Google Play or the App Store confirms the payment. If they still haven’t appeared, open Settings and tap Restore purchases.

I’ve reinstalled the app or changed phone.

The unlock comes back on its own when the app starts, as long as you’re signed in to the same Google account or Apple Account. If it doesn’t, use Restore purchases in Settings.

How do I get a refund?

Refunds are handled by Google Play or the App Store: on Google Play, request one from your Google Play order history; on iPhone, request one at reportaproblem.apple.com. If the store refers you to us, email Luke@faultycompassstudio.com with your order number.

If you have found a security problem, or something that looks like it exposes other people’s information, please email Luke@faultycompassstudio.com and say so in the subject line. It will be dealt with before anything else.