Unit price calculator

Which pack is really cheaper?

Big bag or small one, multipack or “buy 3, pay 2”? Type in price and size of up to six offers. Unitwise shows the price per kg, liter, oz or lb, marks the winner and tells you how much you save – with one hand, right at the shelf.

Download Unitwise on the App Store Get Unitwise on Google Play
  • Compare for free, without limits
  • Deals and multipacks included
  • No account, works offline

Coming soon to Google Play and the App Store.

Three coffee offers compared: the family size wins at the lowest price per ounce, the others show how much more they cost

Deals

“Buy 3, pay 2” – worth it?

Tap “Deal” and pick 3 for 2, 2nd at half price or a percentage off. Unitwise counts everything you take home and compares it fairly with the other offers.

The card also tells you what you actually pay and for how much – so a deal never tricks you into buying more than you need.

Yogurt cups with the deal “3 for 2” beat the large tub; the card shows what you pay for how much

Multipacks

Six-pack or big bottle?

Enter one can and how many are in the pack – the price is for the whole pack. Metric and US units mix freely: 12 fl oz cans against a 2-liter bottle is no problem.

Weight against volume can’t be compared – Unitwise says so instead of guessing.

Sparkling water: a 12-pack of cans against a big bottle and a bottle 6-pack, priced per fl oz

The big pack
is not always the cheaper one.

In our example, three 5.3 oz yogurt cups on “buy 3, pay 2” cost 5.4% less per ounce than the 32 oz tub. You only see that when you do the math – Unitwise does it in a second.

Price book · Ad-free

Is this really a good price?

Save your best price for butter, coffee or diapers with one tap. Next time, Unitwise shows you right away whether today’s offer is above or below it.

Part of Ad-free, together with the history. Comparing itself stays free.

Butter compared with your saved best price: the best offer today is 11 percent above it

History · Ad-free

Compared once, remembered.

Save comparisons for the things you buy every month and reopen them with one tap – detergent, coffee, pet food.

Everything stays on your phone. No account, no cloud.

History with saved comparisons for coffee, yogurt, water, detergent and diapers

Try it here

Unit price calculator

Enter up to four offers. Everything is calculated in your browser – nothing is sent anywhere. The app adds deals, multipacks, a price book and more.

Show prices per

Same math as the app: price ÷ amount, shown per kg and 100 g, per liter and 100 ml – or per oz, lb, fl oz and gallon for US units.

The difference

From guessing to knowing.

  • Mental math with 375 g vs. 1 kgPrice per kg, l, oz or lb in a second
  • Shelf labels per 100 g here, per kg thereEvery offer on the same basis
  • “3 for 2” deals that only look goodDeals and multipacks counted fairly
  • A calculator app, a pen, a guessWinner marked, savings in percent
  • Forgetting last month’s best priceBest prices saved in your price book
Download Unitwise on the App Store Get Unitwise on Google Play

Small app. Saves money every week.

Metric or US – automatically

In the US you see prices per oz and lb, elsewhere per kg and liter. Switch any time – and choose kg or 100 g as your main basis.

2 to 6 offers

Big, small, store brand, name brand – compare up to six at once. The winner is highlighted, the rest show how much more they cost.

Built for one hand

Big number fields, a numeric keypad, “next” jumps to the next field and a short vibration when the winner changes.

Money saved, in plain numbers

Not just “cheaper”: Unitwise shows the difference in percent and how much money you save on the same amount.

Private and offline

No account, no cloud. Comparisons, history and price book stay on your phone and work without a connection.

Ad-free when you want

The free version shows one small banner. Ad-free – as a yearly subscription or a one-time purchase – removes it and adds history and price book.

6
offers in one comparison
8
units: g, kg, ml, l, pcs, oz, lb, fl oz
5
app languages

Quick questions.

Who is Unitwise for?
For anyone who shops for groceries, drugstore items or pet food and wants to know in a second which pack is the better deal – families, students, bulk buyers and everyone who doesn’t trust “family size” blindly.
What does Unitwise cost?
Comparing is free and unlimited – up to six offers, deals, multipacks and all units. The free version shows a small ad banner. “Ad-free” removes it and adds history and price book, either as a yearly subscription or as a one-time purchase. The store shows the price.
How does Unitwise make money?
With the banner in the free version (Google AdMob) and with the optional Ad-free purchase. We don’t sell data and get no money from stores or brands – the winner is always the cheapest offer, nothing else.
Does it work with ounces and pounds?
Yes. In the US Unitwise shows prices per oz, lb, fl oz and gallon automatically; elsewhere per kg, 100 g, liter and 100 ml. You can switch in the settings and mix units freely, e.g. 16 oz against 1 kg.
The shelf label already shows a unit price. Why the app?
Labels often use different bases (per oz here, per lb or per count there), are missing on deals and multipacks, or are hard to find. Unitwise puts every offer on the same basis – including “buy 3, pay 2” and your own best price from last time.
What happens with my data?
Your comparisons, history and price book stay on your phone – no account, no cloud. The free version loads ads from Google AdMob; in Europe you are asked for consent first. Besides that, the app only sends an anonymous usage ping (random install ID, app opens, purchases) to our own server.
Which languages and devices?
The app speaks English, German, Spanish, French and Italian and works with euros, dollars, pounds, francs and more. It is coming soon for Android and iPhone.

Get Unitwise.

Next time at the shelf: two prices, two sizes, one tap – done.

Download Unitwise on the App Store Get Unitwise on Google Play

Coming soon for Android and iPhone · free with ads

UnitwiseUnit price checker · coming soon

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