Inside the Design of the Best Fake Banking App
Most fake-money apps get designed backwards: build the gag first, make it convincing later, if ever. LarpBank was designed the other way around - every real design decision behind it was made so the make-believe would survive actual scrutiny.
There are plenty of fake-money apps on the App Store. Almost none of them look like a bank you'd actually use, because almost none of them were designed like one. They were built as gags first - which is fine if you want to prank a friend, and useless if you're running a campaign or a scene where the phone has to read as real.
LarpBank started from the opposite brief: design a real personal-banking interface, then make every number in it fictional and fully under the user's control. Three design principles came out of that brief, and they're the actual reason it holds up where other fake bank apps don't.
Why it's built like a real fintech product, not a joke
Most fake-money apps look like prank apps - chunky buttons, clip-art icons, obvious gags, because looking convincing was never the goal. LarpBank was built in SwiftUI with the SF Rounded type system, real gradients, and the same iconography language you'd expect from an actual banking app, because looking convincing was the entire goal. When you pull it out at the table, nobody is squinting at it wondering if it's a bit.
That same standard extends past the bank screen. LarpCrypto, LarpStocks, and the rest of the suite all inherit it - a fake portfolio should feel exactly as real as a fake checking account, not like an afterthought bolted onto the actual product.
Why one gesture controls everything
The triple-tap gesture is the clearest expression of the design brief: you are the back end. There's no admin panel, no debug menu, no spreadsheet running alongside the app to keep the numbers straight - triple-tap any balance, any holding, any total, and set it to whatever the scene needs, instantly.
That single decision cascades into everything else. Triple-tapping the portfolio total scales every holding proportionally to hit the new number, so the composition of a crypto wallet stays intact while the total matches the story being told. A faction's treasury can go from broke to flush and back again in the time it takes to type a number. The editing surface is the interface, on purpose, everywhere in the app.
Why it never touches the internet
LarpBank makes zero network calls. Not "minimal" - zero. No sign-up, no email, no password, no cloud sync, no analytics. Every byte of a session lives on-device in SwiftData and nowhere else, and the only thing the app ever asks for is a first name.
This wasn't just a privacy decision - it was a reliability one. An app that needs a connection to work is an app that can fail mid-scene, at the table, or on a film set, at the worst possible moment. Offline-first means LarpBank behaves identically whether you're using it at home with full signal or in a basement with none.
Lived-in from the first launch
On first run, LarpBank seeds 60-120 transactions per checking and credit account across the last 90 days, plus a lighter trickle for savings - a direct result of the "survive scrutiny" principle. You don't start with an empty app, you start with months of believable history.
A market that feels alive without drifting
Pull-to-refresh on the crypto screen runs a small market tick - prices wiggle, percentages shift, top movers re-rank - so the portfolio behaves like a market without ever leaving the bounds you set with triple-tap.
Nothing to lose, because nothing is stored anywhere else
Zero network calls means there's no server breach to worry about and no account to lose access to. Wipe and regenerate sample data any time from Settings.
Who these design decisions were made for
LARPers
Run in-world economies, character wallets, and faction accounts without juggling spreadsheets between scenes.
Tabletop GMs
Hand out coin purses, heist takes, or corporate slush funds in modern and near-future campaigns - directly on a player's phone.
Improv & narrative performers
Need a phone screen that doesn't break the scene? Pull up LarpBank and the moment reads as real.
Educators
Demonstrate personal finance or fintech UX in a classroom without exposing real accounts to anyone.
Designers & developers
Use it as a reference implementation of a modern banking + crypto UI built in SwiftUI.
For a full rundown of what all of this adds up to feature-by-feature, see why LarpBank is the best fake bank app for mobile - this piece is about the decisions behind it; that one is about the result.
LarpBank isn't a finance tool pretending to be a game. It's a game tool that takes finance seriously - every design decision made so the make-believe holds up under scrutiny.
All data is fictional and stored locally.
See the design for yourself
LarpBank is free to download on iOS, or open LarpCrypto, the Fake Phantom Wallet web app, on Android and any browser. No account, no real money.
Android beta · updates coming · Pro prices 50% off