Your change, kept for you.
When a shop owes you change and has none, they can save it as credit on your card instead of handing you sweets. Marii Cards shows you what each shop is holding, gives you one code to spend it — and only you can spend it.
NewRoom for your loyalty cards from other shops too — scanned in once, kept on your phone, no account needed.
Sign in with the number the till already has for you. There is nothing to fill in and nothing to pay — and adding your own loyalty cards takes no sign-in at all.
Safe by design
Only you can spend it.
Your credit is money you were owed. It is protected the way money should be — not with promises, with how the thing is built.
Nobody spends it but you
Spending takes the code on your phone, or your card and your PIN. Your phone number alone can never spend, and a photo or photocopy of your card is useless without your PIN.
A code only your phone can make
Your pay code is signed on your own phone and changes every minute. A shop can check it, but no shop — and not even Marii — can make one for you.
Your PIN never sits at the till
It is checked by our servers each time you pay and is never stored on a shop’s device. Three wrong tries and it locks until you set a new one.
You hear about every card spend
When your card is used, you get a text straight away with what was spent and what is left — and a number to call if it wasn’t you.
Lost your card? Block it in seconds
Report it lost in the app and it stops working at every till, at once. Your credit stays exactly where it was, ready for a new card.
Signing in needs your phone
There is no password to steal. Each sign-in takes a code sent to your number, so someone holding your card still can’t get into your account.
What the app does
Every shop in one place
Each shop’s credit sits on its own card, with that shop’s name and colour. Nothing is ever pooled — credit belongs to the shop that gave it.
One code for every till
A single code, refreshed every minute, that any shop on Marii can scan. It works with no signal, so a queue never waits for your data.
Told the moment it lands
When a shop saves your change, you get a notification and a text. Tap either and you land on that exact card.
Your card still works
Lost your phone, flat battery, no smartphone at all? Show your card at the till and enter your PIN. The app is a convenience, never the key.
Also in the app
Your loyalty cards, in here too.
The loyalty cards you already carry — the butcher’s, the chemist’s, the supermarket’s. Add one and it sits on your phone, ready to show at that shop’s till. They hold no Marii credit, and we have no part in those programmes.
1. Add the card
Hold it up to the camera: the app reads its barcode and its colour, then you give it a name. If the camera cannot read it, type the number in yourself.
2. Keep it with the rest
Added cards sit together under the cards the shops gave you, or on their own if you have never signed in. Nothing about them leaves the phone.
3. Show it at the till
Tap the card and its code fills the screen, bright and awake, with the number under it for a cashier who would rather type.
Cards you add stay on the phone you added them to. We never see them, we cannot bring them back, and we do not follow their points or balances. Keep the plastic with you — some shops still ask for the card itself.
Stay in the loop
Be first to know at the shops you love.
Your butcher has a weekend special. Your pharmacy has your brand back in stock. Your bakery has something for your birthday. Say yes at their till, and they can tell you before the shelf is empty — and you already have credit there to put towards it.
Only from shops you said yes to
Each shop asks you at its own till. Yes to your butcher, no to everyone else — it is your call, one shop at a time.
Pictures, not spam
Specials arrive in the app’s For you section as the shop’s own poster — the weekend deal, the new stock, the treat on your birthday. Now and then, a text.
Switch any shop off, any time
One switch per shop in the app, and one for all of them. Off means off: nothing from that shop until you change your mind.
Your money news never stops
Turning offers off never stops the message telling you a shop saved your change. That one is your credit, not an offer.
Questions people actually ask
- Does it cost anything?
- No. The app is free and the credit is your own change — nothing is deducted for holding it.
- What if someone finds my Marii card?
- Without your PIN it spends nothing. Report it lost in the app and it stops working everywhere, straight away — your credit is untouched.
- Will shops flood me with messages?
- No. Only shops you said yes to at their till can text you, and you can switch any of them off in the app — or all of them at once.
- Can I spend credit from one shop at another?
- No, and that is the point. Credit belongs to the shop that gave it to you, and is spent at that shop’s till.
- What if I do not have a smartphone?
- Your credit works without the app. Show your Marii card at the till and enter your PIN, and every change added is confirmed by SMS.
- What can the shop see about me?
- Your phone number, always — that is how your credit is found. Your name and birthday are shared only with shops you choose, one at a time, and you can stop at any point.
- Which of my other cards can I add?
- Loyalty and rewards cards that carry a barcode or a QR code. Add the card and the app redraws its code on your screen. It is not for bank or payment cards, and not for anything you tap or insert.
- Will every till scan my phone?
- Not every one. Some scanners cannot read a screen at all, and some programmes still want the plastic in hand. The number is printed under the code so a cashier can type it — but keep the card on you until you know that shop reads phones.
- Do my added cards move to a new phone?
- No. They live on the phone you added them to, and we hold no copy to restore — so keep the originals and add them again. Signing out, or asking us to delete your data, clears them from that phone.
- I lost my Marii card.
- Report it lost in the app under Profile → Card PIN, ask any shop where you hold credit to block it, or call Marii on +263 78 295 8724. Then ask a shop for a new card — your credit moves across untouched.