How to buy Linearity Curve on iPad

Linearity Curve is free to download on iPad from the App Store. You can start using it immediately without an account or payment. To unlock all Pro features, you'll need a Linearity Pro subscription.

Download the app

1. Open the App Store on your iPad
2. Search for Linearity Curve
3. Tap Get to download — no payment required at this step

Subscribe to Pro

Once the app is installed:

1. Open Linearity Curve and tap the Profile icon in the top navigation
2. Tap Upgrade to Pro
3. Choose a plan — monthly or yearly
4. Confirm the purchase with Face ID, Touch ID, or your Apple ID password

The yearly plan includes a 7-day free trial. See Free trial for details.

Your subscription works across all your devices

Once subscribed, your Pro plan is available on iPhone, iPad, and Mac — as long as you're signed in to Linearity with the same account email. You do not need to purchase a separate subscription for each device.

Troubleshooting

Can't complete the purchase?
Make sure your App Store payment method is set up. Go to Settings → tap your name → Payment & Shipping and add or update a card.

Already subscribed but Curve still shows Free?
Tap Profile → Manage Subscription → Restore Purchase. See My subscription isn't showing after payment for more steps.