Contact
Email support@trestline.app. Include the app version, iOS version, and a non-sensitive description of the action you were attempting.
Do not send client information, payment details, Apple credentials, receipts, or complete business exports.
What Marginelle calculates
Marginelle estimates owner return per appointment and per hour from the fixed costs, billable time, percentage costs, hourly target, service price, representative duration, and consumables you enter.
It does not provide market prices or accounting, tax, payroll, legal, or financial advice.
Menu Change Plan
Lifetime Pro lets you enter proposed prices you choose and preview them with the saved assumptions. Marginelle never supplies a market or recommended price. Only confirmed changes are applied, and a successful apply saves an immutable before-and-after audit pair.
Local data
Working data is stored locally. Removing the app removes its local working container, subject to Apple-controlled backup behavior. Plain-text, CSV, and PDF outputs are reports, not a whole-library restore.
Purchase and restore
The free app supports a complete three-service audit. Lifetime Pro supports more services up to the technical limit, Menu Change Plans, weekly scenarios, comparable history, and CSV/PDF export. Apple handles Purchase and Restore Purchases.
A purchase, restore, refund, or entitlement change never deletes or hides a local audit. If Pro access ends, free creation limits apply again.
Exports and deletion
CSV and PDF use an immutable saved snapshot. Closing the share sheet cleans up the temporary export; the saved audit remains. Delete records inside Marginelle. There is no developer account or cloud library to recover.