# Cairn - Your Expense Tracker — Track spending in any currency

> Track spending in any currency (iPhone/iPad app by Jurgen Klaaben.)

- Source: https://appshunter.io/ios/app/cairn-your-expense-tracker/id6762088614 (this page in markdown: same URL + `.md`)
- Developer: [Jurgen Klaaben](https://appshunter.io/developer/1871604977)
- Category: Finance, Travel
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English
- Released: 2026-06-10
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/cairn-your-expense-tracker/id6762088614/reviews.md

## What is Cairn?

Cairn is the travel expense tracker built for the way you actually travel — fast enough that you'll still be logging on day five, smart enough to handle every currency without the mental math.

Most trackers fall apart on the road: the small coffee never gets logged, your tracker and your card never agree, and you give up by day three. Cairn fixes that.

LOG IN SECONDS
- A built-in numpad gets an expense in with two taps — no forms.
- Cairn suggests the category from where you are (a café becomes Coffee, a gas station becomes Fuel). Location stays on your device.
- Capture from your iPhone, Apple Watch, or a Home Screen widget.

EVERY CURRENCY, CONVERTED
- Spend in any currency; Cairn converts to your home currency automatically using live exchange rates.
- Rates are cached, so it works offline — log now, sync later.
- Free plan covers 30 currencies; Cairn Premium unlocks them all.

SEE THE REAL PICTURE
- Organize spending into trips with multiple legs for multi-country journeys.
- Set monthly budget envelopes by category and track your pace.
- Add income and watch your running balance.
- Set savings goals and let unspent budget feed them automatically.

ON YOUR WRIST
- A full Apple Watch app for logging on the move, plus complications for an at-a-glance balance.

YOURS, EVERYWHERE, PRIVATE
- Syncs across iPhone, iPad, and Apple Watch through your private iCloud — no Cairn account, no servers in the middle.
- Your location is used only on-device to suggest categories. It is never logged or sent anywhere.
- Export any trip or your whole history to CSV or JSON anytime.

Cairn Premium is available as a monthly or annual subscription, or a one-time lifetime purchase, with a free trial. Track your first trips free.

Terms of Use: https://juergen-kc.github.io/cairn-app/terms.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Cairn Premium (Monthly) | $2.99 | per month |
| Cairn Premium (Annual) | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Cairn Premium (Lifetime) | $49.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-06-10

No release notes.

## More apps by Jurgen Klaaben

- [MileIO - Fuel Tracker](https://appshunter.io/ios/app/mileio-fuel-tracker/id6758225631)
- [rawcast — Terminal Weather](https://appshunter.io/ios/app/rawcast-terminal-weather/id6760224045)
- [Matchday - Soccer Planner](https://appshunter.io/ios/app/matchday-soccer-planner/id6776015801)

All apps by Jurgen Klaaben: https://appshunter.io/developer/1871604977

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-08.*