Check the food at home and plan the groceries you need, in one app for Kiwi households.
Life is busy enough. Your kitchen should remember the groceries, so you don't have to.
Marsonya is a pantry app for NZ households. Track food in the pantry, fridge and freezer, check what needs using, and plan purchases from what is missing. Compare prices at Woolworths, Pak'nSave and New World. NZ households bin $1,364 of food annually (Love Food Hate Waste NZ, 2025 survey).
App screen from the current build. Prices and products shown are illustrative, not live prices.
Scan a printed food date with your phone camera and Marsonya records the deadline and date type. The expiry view shows food to use sooner. Mobile reminders need notification permission on your phone. A waste report summarises items you record as eaten or discarded, helping you review what went unused.
How to cut household food waste
App screen from the current build. Prices and products shown are illustrative, not live prices.
Marsonya keeps a record of your pantry, fridge and freezer, searchable from the supermarket aisle. Add items by barcode scan, catalogue search across roughly 97,000 NZ grocery products, or manual entry. Update quantities as food is used. Separate tabs show each storage area, and saved records stay readable offline. Catalogue lookups need a connection.
A pantry system you will keep using
App screen from the current build. Prices and products shown are illustrative, not live prices.
Your shopping list becomes a per-store buy plan. For example, six items at Pak'nSave and four at New World. Marsonya provides retailer links so you can continue shopping. You always pay in the retailer's app or site. Marsonya never holds your card, and never places an order for you.
Splitting your shop without the hassle
App screen from the current build. Prices and products shown are illustrative, not live prices.
Marsonya compares listed prices across Woolworths, Pak'nSave and New World, covering roughly 206 stores on a nightly refresh schedule. Product pages show store prices side by side. Deals are compared with each product's own 30-day average, and similar products show their price differences. Check the retailer's current price and availability before paying.
Where grocery money actually goes in NZ
App screen from the current build. Prices and products shown are illustrative, not live prices.
Below is a basket of everyday groceries from Marsonya's own price data at three named stores. Check the observation date and compare the same items across each column. Your own list may produce a different result. Start with missing groceries after checking food at home, then use Marsonya to compare the list's store totals.
| Item | Woolworths (national online pricing) | PAK'nSAVE Moorhouse | New World Durham Street |
|---|---|---|---|
| $5.50 | $6.55 | $6.95 | |
| $7.00 | $3.29 | $6.99 | |
| $5.80 | $5.49 | $6.69 | |
| $8.99 | $11.99 | $13.59 | |
| $3.79 | $2.79 | $3.79 | |
| $2.49 | $3.69 | $4.25 | |
| $10.50 | $10.49 | $11.65 | |
| $9.15 | $8.95 | $9.09 | |
| $4.49 | $2.99 | $4.49 | |
| $4.99 | $4.79 | $4.99 | |
| $3.00 | $3.75 | $4.35 | |
| $5.56 | $4.99 | $5.49 | |
| $4.30 | $5.09 | $5.75 | |
| $7.49 | $7.79 | $8.49 | |
| Basket total | $83.05 | $82.64 | $96.56 |
$13.92 between the cheapest and dearest chain on the full basket.
Prices observed 2 August 2026 from Woolworths (national online pricing), PAK'nSAVE Moorhouse and New World Durham Street, using the same data source the app reads. * = on special that day.
Month-by-month movement from the same data:the NZ grocery price index.
Untick items to price your own version of the basket.
Get the comparison for your own listUse your food record when choosing what to buy, then update the record as groceries come home and food is used.
Stock, shopping and dates together
What you buy lands back in the pantry, what the pantry runs low on becomes the next list, and the dates you scan drive the reminders.
Check products by barcode. Scan a barcode to look up a packaged product before adding it to your food record.
No. Marsonya stores your pantry and shopping data to run the app's features. Waitlist addresses receive early-access news only. Every email carries a one-click unsubscribe, which deletes the address from the list. Marsonya's plan for revenue is a paid app tier. Your data is not sold or used for advertising.
Start with food you often forget rather than recording the whole kitchen at once. Barcode and expiry-date scanning reduce typing, completed Buy Plan purchases can add items to the pantry, and mobile reminders need notification permission. Keep the record current as food is used, and see whether the routine helps your household.
Early access is free. Pricing after early access has not been set. Waitlist members will hear the confirmed pricing before the public announcement.
No. Marsonya is an independent, family-built app from Christchurch, with no commercial relationship with Woolworths, Foodstuffs or any retailer. Prices come from the chains' public store listings, and the app recommends whichever store is genuinely cheapest for a given list. No retailer can pay for placement.
Marsonya is in field testing in Christchurch. Early-access invitations go to waitlist members in signup order, ahead of the public app-store launch. A launch date has not been set.
Our pantry looked full, but we still bought food we already owned and threw out food we had forgotten. Marsonya started with those problems in our own Christchurch kitchen. We wanted a record we could check before shopping and a way to notice food that needed using.
Roman, a data scientist, writes the code. His wife Marina runs the kitchen where the features are tried. If a feature does not help during a busy evening, it goes back to be redesigned. Marsonya brings the food record, shopping plan and dates together so there is less to keep in your head.
Consumer NZ put roughly 82% of the New Zealand grocery market with two groups in June 2026. While supermarket reform is debated, households still need to decide what to buy this week. Marsonya helps you check what you have and compare the groceries you need. A field-test build is running in Christchurch. Life is busy enough. Your kitchen should remember the groceries, so you don't have to.
Marsonya is built by one family, and every feature so far came from someone describing a real kitchen problem. If something here misses the mark, or the thing you actually need is missing, say so.
Leave your email and we will let you know when early access opens. Invitations go to waitlist members in signup order.
Full detail on what happens to your address: the privacy note.
