Comparison

Arbitrium vs CoHiro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Arbitrium

This app assists in making rational decisions by allowing you to define criteria and rate your options. It uses a weighted decision matrix to help you identify the best choice for various life scenarios.

Highlights
  • Define decision criteria
  • Rate available options
  • Weighted decision matrix
  • Identify best choice
  • Save and manage decisions
Features
Read full description

We often have to take decisions. Arbitrium is an app that will help you take the right one in a simple and rational way. Establish the criteria you need to consider and then rate each option you have available. The option with the highest score will be the best one. Arbitrium is based on the weighted decision matrix concept and will help you take decisions such as: Which car should I buy? Which bank should I choose for a mortgage? Where should I go on vacation? Which job offer should I accept? Which nursery should I choose for my child?

About

CoHiro

Features
Read full description

CoHiro is a shared grocery shopping list and the pantry inventory that feeds it. Mark something as running low and it is on the list by itself. Your home, on the same page. CoHiro does the remembering, so it never all lands on one person. One list, live on every phone Add something and it appears on everyone's phone in real time, whatever phone they carry. No sending screenshots, no reading the list out over the phone in aisle four. The list updates for every member the moment anything changes, so it is never at home on the fridge while you stand in the store. A pantry that writes the next shop Every item in your home is in stock, running low, or out. Notice the coffee is low while you are making it? Mark it in two taps and it lands on the shared shopping list on its own. By the time anyone heads out, the list has already written itself. Shopping runs, together Heading to the shops? Say so, and everyone gets reminded in time to add their last-minute items. Can't go yourself? Ask if anyone can, no pressure, just a nudge. In the store, the list works as a checklist for grocery shopping: tick things off as they land in the bag. Put the shopping away and the pantry updates to match. Shelves that sort themselves New items sort themselves onto named shelves. It's a guess, and you can change it in one tap. Starter packs set up a shelf and its basics in one go, so a new household is useful from its first minute. The list stays organized without anyone playing librarian. One store, in the order you walk it Name the shops you actually go to and arrange your shelves in the order you walk them. The list then follows that route. Whatever a shop does not carry sits at the end, out of your way. Scan it onto the list Point your camera at a product barcode and CoHiro gets it ready for your shopping list or pantry. It suggests the name and shelf, and you confirm with a tap. Whatever it does not know yet, you add by name once, and it remembers the barcode for next time. Considerate by design Quiet hours keep notifications silent during each member's own quiet window. And the Lately view on Home shows who did what this week, so the quiet work of keeping a home stocked gets seen. For every kind of household Families, couples, roommates and housemates, students sharing a flat, friends splitting a place: if you share a fridge, you are a household. CoHiro works as a grocery list app for couples and a shopping list app for roommates, and a family fits just as well. CoHiro works with the phones your household already has, so nobody is left off the list. You can belong to more than one household, a flatshare and a family at once, and everyone has the same rights: anyone can add, shop, and invite. Private, plainly Your household is invite-only. Join by entering a code or scanning a QR code; codes expire after 72 hours, and you can revoke a code at any time. No public profiles, no strangers, just the people you invited. CoHiro is free to use. No ads, no tracking, no analytics service. There is no ad SDK in CoHiro; your shopping list is nobody's ad space. Your data is stored in Frankfurt, Germany. Sign in with Apple or Google, and if you ever leave, you can delete your account from inside the app. It really is deleted. CoHiro is calm on purpose: a small set of things done well, in plain language, with a small mascot called Hiro doing the remembering. If the family shopping list lives on the fridge and the last shopping run lives in three chat threads, give CoHiro the job. One grocery list you can share with your family, one pantry everyone can see, one household on the same page.

Screenshots

Arbitrium4 screens
CoHiro4 screens

Verdict

The call

The clearest difference is in-app purchases: CoHiro at none against Arbitrium's 1. CoHiro also leads on update cadence (weekly vs every 28 months). Arbitrium's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Arbitrium sells 1 one-off in-app purchase. CoHiro asks for nothing beyond the download.

UpkeepUpdate frequency

Arbitrium ships an update every 28 months, CoHiro weekly. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Arbitrium versus CoHiro: the parameters behind the verdict, then further details
ParameterArbitriumCoHiro
PriceFreeFree
Rating4.9 (11 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 28 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.4
Further details — not scored
Size8 MB70 MB
Age rating4+4+
DeveloperThe Lost ProjectNiugio UG (haftungsbeschraenkt)

In-app purchases

1 purchases

Arbitrium

One-time1
  • PRO Mode$0.99
None

CoHiro

No in-app purchases

Questions

Is Arbitrium free?
Arbitrium is free to download, with in-app purchases available.
Is CoHiro free?
CoHiro is free to download, with no in-app purchases.
Do Arbitrium or CoHiro have ads?
Neither Arbitrium nor CoHiro shows ads.
Which is updated more often, Arbitrium or CoHiro?
Arbitrium ships an update every 28 months, and CoHiro weekly. Most recently, Arbitrium was updated on October 13, 2026 and CoHiro on October 5, 2026.

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