Main Arc

Privacy Policy

Last updated: September 29, 2026

TL;DR

Main Arc collects no data. No accounts, no analytics, no ads, no third-party SDKs. Your rules and ticks stay on your iPhone and in your own private iCloud. Apple Health data and progress photos never leave your device.

Who we are

Main Arc (formerly HabitMint) is an iPhone app for daily-rule challenges such as the "Winter Arc", published by an independent developer ("we", "us"). Contact: homasglobal443@gmail.com.

Data we collect

None. We do not collect, receive, store, sell or share any personal data. The app has no user accounts, operates no servers of ours and makes no network requests to us.

Where your data lives

On your iPhone. Your arc, rules, ticks, streaks, shields and settings are stored locally.
In your private iCloud (optional). If you are signed into iCloud, iOS syncs your rules and ticks through CloudKit into your private iCloud database so they stay in sync across your devices. This data is tied to your Apple ID, encrypted by Apple and never visible to us. See the Apple Privacy Policy.

Apple Health

If you turn on automatic ticking (Main Arc Pro) and allow access, the app reads your step count, exercise minutes, sleep and mindful minutes from Apple Health to tick rules such as "10,000 steps" automatically. This data:

is read and processed only on your iPhone and never sent to us or anyone else;
is never written back to Health, never stored in iCloud (only whether a rule was done is saved) and never used for advertising, marketing or data mining;
can be switched off at any time in Health › Sharing › Apps › Main Arc or iOS Settings › Health › Data Access & Devices.

Camera and photos

Progress photos you take in the app are stored only on your iPhone inside the app and are never uploaded anywhere. Videos and cards are saved to your photo library only when you tap Save, and shared only when you choose to share them.

Notifications and Live Activities

Reminders and the Lock Screen countdown are created on your device. Nothing about them leaves your phone.

Purchases

Subscriptions and one-time purchases are processed by Apple. We never see your payment details; Apple only lets the app know which features you paid for.

Analytics, ads and third parties

No analytics or tracking SDKs, no advertising, no third-party code besides Apple's iOS frameworks. We do not "sell" or "share" personal information as defined by laws such as the CCPA or GDPR — we never have any.

Deleting your data

Removing a rule keeps its history in your iCloud; deleting a progress photo removes it at once. Deleting the app removes all local data, including photos. To remove synced data, go to iOS Settings › your name › iCloud › Manage Account Storage.

Children

Main Arc collects no data from anyone, including children.

Changes to this policy

If we ever change how the app handles data, we will update this page and the date above before the change takes effect.