How can we help?

Find a quick answer or contact AppTunes Labs about Ductfolio.

How do I start?

Open Calculate, choose a duct shape and enter airflow and a friction limit. Review the calculated sizes and assumptions before saving a job.

What is included in Pro?

Pro is a one-time purchase that unlocks additional saved jobs, fit-to-space and pressure tools, comparisons, catalog editing and report exports. Local backup remains available to protect your data.

Can I work offline?

Calculations and local jobs work on the device without an app account or an application server. Buying or restoring Pro needs an internet connection. Previously verified Pro access can be cached on the device; a fresh installation may need a restore.

How do I restore Pro?

Use Restore Purchases from the Pro screen while signed in to the Apple Account used for the original purchase.

What does pressure loss include?

The assistant calculates straight-section friction and the fitting and equipment losses you explicitly provide. Verify assumptions and project requirements independently; it is not a complete network design or code certification.

How do I keep a backup?

Use the backup option in Settings. Store exported files somewhere safe. PDF and CSV reports are not complete editable backups.

Contact support

Email apptuneslabs@gmail.com with your device, iOS and app versions, steps and relevant input values. Please do not send passwords, payment-card details or client data.