A quick look at one of the small Android apps I'm building solo, with .NET MAUI, under Horizon Software.
Anyone who’s travelled knows the feeling: you’re three countries deep, the currency has changed twice, your phone has no signal, and you have no real idea whether you’re still on budget. WanderWallet is built for exactly that moment — a free Android app that plans and tracks your travel budget entirely offline, so you always know how much you have left to spend, signal or not.
Plan your trip, one leg at a time
Build a trip from destination legs — a stop for each city, region or country. WanderWallet can auto-budget each leg from a curated dataset covering 139 destinations worldwide, which you can then fine-tune. Each leg tracks its own local currency, shows a country flag on the trip card, and drops a pin on an offline route map, so you can see your whole journey at a glance.
Track every expense — in any currency, offline
Log spending by category in any of 155 currencies, with daily exchange rates cached for offline use so the maths still works with no signal. Snap a paper receipt and on-device OCR reads the amount, date and merchant automatically — and no photo ever leaves your phone. Mark an expense as pre-paid to spread its cost, and split costs when you’re travelling with others.
Private by design
Here’s the part we’re proudest of: your trips, expenses, photos and packing lists stay on your device. No account. No login. No cloud. WanderWallet works whether you’re on hotel Wi-Fi or halfway up a mountain with no bars at all.
What you get
- Plan a trip in legs, with auto-budgets for 139 destinations
- Track expenses in any of 155 currencies, with cached offline rates
- Scan paper receipts with on-device OCR — nothing leaves your phone
- Split costs, mark pre-paid items, and keep packing lists
- An offline route map with a pin for every leg
- Works fully offline — no account, no login, no cloud
- Free to download
Get it on Google Play
Want the quick tour first? See the WanderWallet app page.
Frequently asked questions
Does WanderWallet work without internet?
Yes — that’s the whole point. Exchange rates are cached, the maps are offline, and everything works with no signal. You only need a connection to occasionally refresh rates.
Do I need an account?
No. There’s no account, no login and no cloud — your trips and expenses stay on your device.
How many currencies does it support?
155 currencies, with daily exchange rates cached so conversions work offline.
Is WanderWallet free?
Yes — WanderWallet is free to download from Google Play.
Built with .NET MAUI by Horizon Software. A small indie studio making simple, focused Android apps.
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