A tailoring app that works with no internet at all

Most business software assumes a connection. A tailor's day does not. A client walks in while the network is down, the bundle runs out mid-week, the shop sits in a building where the signal drops — and an app that needs the internet to save a measurement is an app you stop trusting after the first time it loses one.

So the usual answer is a paper book. The book always works. It is also the thing that gets lost, soaked, or filled with a balance nobody can read six months later.

Offline is not a fallback mode in Shona — it is how the app is built. Every action writes to your phone first and is pushed to the server later, whenever a connection turns up. You are never waiting on a spinner to save a client.

• Add clients, record measurements, take orders and log payments with no signal at all
• Nothing is queued behind a connection — the save completes on the device
• A week with no data bundle costs you nothing
• Everything syncs on its own once you are back online

Backups happen on their own. Every change is pushed to your account whenever the phone has a connection, so there is no export step and no file to remember to copy. If you want to force it — before handing the phone to someone, say — there is a Sync Now button in Settings.

Two things stay on the device only, by design: any measurements you added to the catalog yourself, and your daily reminder time. Everything that belongs to the business — clients, orders, payments, staff, stock — goes to your account.

Sign in on a new phone and your clients, orders and payments are pulled down. Shona is one account per shop, though, so it is built around one device being used at a time. If the same account is open on two phones at once, whichever one saves last wins — worth knowing before you hand a second phone to someone on the bench.

If you run a shop with several tailors, the thing you probably want is assigning orders to each tailor from the one account, rather than separate logins.

The two moments it earns its place are the ones with a customer in front of you. Taking a full set of measurements is a long form to fill in; losing it to a dropped request is the fastest way to go back to paper. And recording a deposit has to happen the moment the money changes hands, not when the signal returns.