Support

Open the App and tap the upgrade button. You can choose between a weekly subscription, annual subscription, or lifetime purchase. Payment is processed through your Apple ID account.

Go to Settings > [Your Name] > Subscriptions on your iPhone or iPad. Select Concrete Calc and tap "Cancel Subscription". You will retain Pro access until the end of the paid period.

Make sure iCloud is enabled on your device (Settings > [Your Name] > iCloud). Sync is automatic across all your devices signed in to the same Apple account.

Open a calculation and tap the share button. You can export to PDF, CSV, or Excel. The export feature is available in the Pro version.

The App supports both metric and imperial systems. You can change the measurement system in the App settings.

Concrete Calc is available in 10 languages. The App automatically adapts to your device language if supported.

Open the App, go to settings, and tap "Restore Purchases". Make sure you are signed in with the same Apple ID used for the original purchase.

Your data is stored locally on your device and in your personal iCloud storage. We do not have access to your data. See our Privacy Policy for more details.