Your day
Your day ends at 3:00 am, so a check-in at 1:30 am still counts for the day before. In Settings, Day ends, you can pick midnight or 5:00 am instead, until the end of day 3. The new day end starts when the current day ends.
Rules with a time are reminders. Rules with “must be done by” close an hour after their deadline, and that hour is there for when you did it on time but forgot to tap. Deadlines after 9:00 pm stay open until noon the next day.
Set up your arc after a rule’s “must be done by” time had passed? That rule is optional that day, and the rest count as usual. Did it anyway? Check it off.
Weekly rules
A weekly rule, like Train 4 times a week, runs Monday to Sunday. It’s optional on days when you still have enough days left in the week. Once you need every remaining day, the row turns orange and says “Today counts.” Skipping a day that counts makes the week short, and that day gets one missed rule.
The first and last weeks of an arc are shortened, so no week is ever impossible, and a sick day lowers that week’s target by one.
Avoid rules
An avoid rule, like No alcohol, counts as kept unless you tap I slipped. You can undo a slip until the day ends. Avoid rules are never named on your lock screen.
Can I change my rules?
Yes, through the end of day 3: add, edit or remove rules, and change your difficulty. Until then, a rule you removed stays in Your rules under Removed, where you can add it back. After day 3 they’re locked; reminder times can always change. Starting over opens them again until the end of the new day 3.
Starting over
Rough start? Once your arc is paid for and past its first day, Start over in Settings, Purchase makes today or tomorrow your new day 1. Your earlier days stay in Progress as an earlier attempt, your best streak carries, you get 3 new sick days, and your rules stay open for changes until the end of the new day 3. Your crew sees your streak start again, nothing more. Each purchase comes with 3 free start overs, each until the end of day 30. After that, or once they’re used, starting over is a new purchase at the arc’s price, which brings 3 more free ones. While you have a free one left, Today offers it after three missed days in a row, except on Monk. A start over for tomorrow can’t be undone.
Forgot to check in?
Rules you didn’t check come back the next morning in “Did you do these yesterday?”, except deadlines that already closed after their grace hour. Answer I did or No by 12:00 noon. Anything still unanswered at noon counts as No.
Misses and your difficulty
| Difficulty | One missed rule | Two or more |
|---|---|---|
| Warm-up | The day still counts and your streak continues | Missed day, your streak starts again |
| Standard | Missed day, but the first one each week is free | Same as one |
| Hard | Missed day, your streak starts again and the arc keeps going | Same |
| Monk mode | Your attempt ends and a new 90 days starts the next day you open the app | Same |
Warm-up with 2 rules or fewer works like Standard. You can change your difficulty until the end of day 3.
Sick days
Every arc has 3, and a start over brings 3 new ones. A sick day isn’t a miss, your streak holds and your summit date doesn’t move. Take one for today from Your arc on the Today tab. For yesterday, you have until noon: tap “Use a sick day for yesterday” in Your arc, or “Were you sick? Use a sick day for yesterday” on the morning card. Your crew sees “Resting today,” never the word sick.
Crews and chat
A crew is up to 8 people, each 13 or older. Everyone keeps their own rules and dates, and the crew sees each person’s count, streak and camps, never their rules. Create one or join with a code from the Crew tab. Crews need a quick sign-in with Apple or Google. The app checks with the App Store or Google Play whether you’re 13 or older, on iPhone only where the law asks for it; on Android, Google Play may ask you first, before you sign in. Under 13 the app has no crews: your arc works the same on your own.
Someone in your crew being abusive? Report or block them from their name in the app. We review every report within 24 hours. The Crew rules explain what isn’t allowed.
In the chat, hold a message to reply to it, react with an emoji or pin it for the whole crew. Messages disappear after 100 days.
Free days
Your first arc can start free: tap Start free at the last step of setting up. Days 1 to 3 are free, and nothing is charged automatically. Today shows when they end, and a notification at 8:00 pm on the last free day says they end that night (Settings, Reminders and notifications can turn it off). Lock in is in Settings, Purchase any day, and on Today from day 1. From day 4, until you lock in, your arc waits: Today, Progress and Crew close, reminders pause and nothing counts, so nothing is missed. Settings stays open. Lock in and your arc picks up that day, at day 4, or on Monk, at the next day of your new attempt if a miss ended one during your free days, with that day’s rules optional, its summit moved out by the days it waited. Once the date day 90 would have been passes, a new arc is bought instead. On iPhone the free days come once per Apple Account.
Purchases
Each arc is $9 once, or the local price your store shows, and it never renews. Settings, Purchase shows what you paid, the days it covers and its ID. To restore it on a new phone, use Restore purchase on the paywall or in Settings, signed in to the same Apple or Google account you paid with.
Refunds go through Apple or Google, the same way as any app purchase. For 3 days after you buy an arc or a start over, Settings, Purchase has Request a refund, which takes you to Apple’s or Google’s request. A refund ends the arc, days before a start over included. After day 90 you can Keep going with the same rules or Change it up, each a new arc, or take a break at no charge.
A new phone
Install 90North on it, signed in to the same Apple or Google account, and tap “Already started? Restore your arc” on the first screen. Your purchase and arc come back from your iCloud or Google backup. If backup was off, the purchase can still be restored but the history can’t, and the app tells you before starting fresh.
Your data
Your rules, check-ins and contract stay on your phone and in your own iCloud or Google backup, never on our servers. Settings, Export your data gives you a ZIP with your rules, check-ins, contract, crew activity, the messages you sent, your reactions and your pins. In a crew, your daily counts go to your crew, never which rules you hit or missed, and a sick day shows only as “Resting today.” On your own, Settings, Delete all data removes your arc from your phone and your iCloud. On Android, Google’s copy is replaced at its next backup, usually within a day, so keep the app installed until then. With a crew account, go to Settings, Delete account, or use this page without the app. The Privacy Policy has the details.
Contact us
Write to support@90north.app. We usually answer within a day.
From the app, Settings, Help, Contact support opens an email to us with room to write, then the app details: the app’s version and build number, your phone’s system version, your day of the arc, the store’s last error, if there was one, as a code and, if the arc didn’t open, why, as a code. Never your rules or messages, and you can delete the details before you send it.