Support
Cairn — Travel Expense Tracker
Contact
Need help, found a bug, or have a feature request? Email juergen@klaassen.consulting and we'll get back to you.
Common questions
How are foreign currencies converted?
Cairn converts every expense to your home currency using daily exchange rates,
which are cached so the app works offline. Set your home currency in Settings.
Does my data sync between devices?
Yes — through your own iCloud account. Make sure you're signed into iCloud and
that iCloud is enabled for Cairn on each device. There's no separate account to
create.
Why does Cairn ask for location?
Only to suggest a category for an expense based on where you are (for example, a
gas station becomes “Fuel”). It's optional, used on-device, and never leaves
your phone. You can decline and still use everything else.
What's included in Cairn Premium?
The free plan supports 30 currencies. Cairn Premium unlocks all currencies and
is available as a monthly or annual subscription, or a one-time lifetime
purchase, with a free trial. Manage or cancel anytime in your Apple ID
subscription settings.
Can I export my data?
Yes. In Settings, export any trip or your full history as CSV or JSON.
How do I restore a purchase?
Settings → Cairn Premium → Restore Purchases.