A curated travel companion for people who plan before they travel. Language, culture, currency, and everything else you'll need — for every country, offline.
During the trip
A widget with live exchange rates and the time in both places — home and where you've landed. A full currency converter that works offline and remembers the ones you use. A curated list of the local apps that actually matter — not the tourist-facing ones the internet promised. Three surfaces CSK travellers reach for most.
Today's rate and both clocks at a glance — and one tap to the tools below. For a lot of travellers this is the whole app, most days.
The tool people open most. Real European Central Bank rates, saved currencies side by side — cached, so it keeps working with no signal at all.
One app instead of ten. A curated verdict on which local apps to install before you land — rail, transport, payments — and which to skip.
What's inside
Consistency is the point. Once you know where the tipping etiquette lives in Japan, you know where it lives in Portugal.
Speak the language
Essential phrases with native script, phonetic pronunciation and audio playback — at normal speed or slowed down. The alphabet, numbers from 0 to 1000, and the signs you'll actually need to read. Plus a phrase quiz, and the history of how the language got that way.
Know the country
Country facts, history from ancient to modern, and the customs and etiquette that separate a guest from a tourist. Deliberately concise — depth where it earns its place, not padding for symmetry.
Discover where to go
Where to visit, with insider tips rather than brochure copy. Getting around by metro, train, bus, ferry, taxi, car and plane. An interactive map with themed pins that tap straight through to Apple Maps — every place tagged with whether it's an easy day trip from where you're staying.
Eat like a local
The dishes worth ordering, with native names, pronunciation and audio, and vegetarian and vegan indicators. A menu decoder so you're never guessing at a menu. And a drinks guide with the cultural context that makes the ordering make sense.
Travel smart
Month-by-month weather and packing. Money and budgeting. A full currency converter with live rates that caches for offline use — the same one that powers the home-screen widget. Emergency and health information, eSIM and connectivity, and an honest verdict on which local apps are worth installing and which aren't.
At a glance
The section you'll open in a hurry. Emergency numbers you can tap to call. Tipping etiquette by context, so you're not guessing at the bill. Embassies and consulates with 24/7 lines. And a dual-country clock that tells you not just what time it is at home, but whether it's a reasonable hour to call.
Every country downloads for offline use. Aeroplanes, remote regions, hotel WiFi that never quite works — CSK doesn't care. The information you need is already on your device.
Each entry is researched, verified, and edited before it ships — no thin countries, no filler. Europe, Southeast Asia, and East Asia are live today, and each region is growing. New regions launch next.
Americas · South Asia · Oceania · Middle East & Africa
Nothing ships until it's ready.
Start free with a whole country, not a trial. Unlock the rest — and every country we add afterwards — when you're ready.
Free
[FREE-TIER: TBD — Dave to confirm]
There's a free tier, and it's a whole country — not a trial, not a teaser. [FREE-TIER: which countries are free — and whether they rotate — is not decided. Do not name countries here until it is.]
Everything
[PRICING: TBD — Dave to confirm]
All 25 countries, and every country added after. Available as a subscription or as a one-time unlock. [PRICING: both tiers pending — subscription price and one-time unlock price still to be decided.]
No ads. No tracking. No account. Purchases are handled by Apple, and you can cancel a subscription any time from your iPhone's Settings.