Comparison

Arbitrium vs Smart Decision

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

Smart Decision

This app helps you make informed choices by comparing options based on your defined criteria. It supports various criterion types and allows you to weight their importance for a clear, ranked outcome.

Highlights
  • Define options and criteria
  • Six criterion types supported
  • Weighted importance for criteria
  • Real-time result updates
  • iCloud Sync across devices
  • Free to use with optional tips
Features
Read full description

Make rational decisions based on the criteria relevant to you. Define the available Options and the Criteria on which the Decision should be based and let Smart Decision do the math and determine your best choice. Options are the items/alternatives you want to compare, ultimately deciding which is the preferred one. Criteria are the standards on which the Decision should be based. Smart Decision supports six different Criterion types: - Requirement: for essential characteristics a viable option should have - Binary: Yes or No, e.g. WiFi connectivity - Ranking: option order from hightest to lowest - Rating: rate each option with zero to five stars - Value [prefer lower]: e.g. price or power consumption - Value [prefer higher]: e.g. storage capacity or processor speed Each Criterion can be given a weight (from one to five, according to its importance) to be applied in the result calculation. The result is a ranking of all Options sorted by the percentage of the maximum possible score achieved by each Option. It is updated automatically as you evaluate each Criterion for each Option, so you get immediate feedback about the impact of every change. Smart Decision supports iCloud Sync, so your Decisions are kept up to date on all your iOS devices. Smart Decision is totally free, In-App-Purchases allow you to tip the developer and have no impact on the app's functionality.

Screenshots

Arbitrium4 screens
Smart Decision4 screens

Verdict

The call

The clearest difference is update cadence: Smart Decision at every 5 weeks against Arbitrium's every 28 months. Arbitrium's advantage is ratings volume (11 vs 2) and device support (3 vs 1). On price, rating, review sentiment and ads 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 and Smart Decision sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Arbitrium against 5.0 for Smart Decision. That said, the two scores are not equally well evidenced: Arbitrium has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Arbitrium ships an update every 28 months, Smart Decision every 5 weeks. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Arbitrium versus Smart Decision: the parameters behind the verdict, then further details
ParameterArbitriumSmart Decision
PriceFreeFree
Rating4.9 (11 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11 — better2
Update frequencyEvery 28 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.6
Further details — not scored
Size8 MB2 MB
Age rating4+4+
DeveloperThe Lost ProjectMichael Klug

Customer experience

Arbitrium

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Smart Decision

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Arbitrium

One-time1
  • PRO Mode$0.99
3 purchases

Smart Decision

One-time3
  • Small Tip$0.99
  • Medium Tip$4.99
  • Large Tip$9.99

Questions

Is Arbitrium free?
Arbitrium is free to download, with in-app purchases available.
Is Smart Decision free?
Smart Decision is free to download, with in-app purchases available.
Which has better reviews, Arbitrium or Smart Decision?
Smart Decision is rated higher. Arbitrium averages 4.9 out of 5 from 11 ratings, while Smart Decision averages 5.0 from 2 ratings.
Do Arbitrium or Smart Decision have ads?
Neither Arbitrium nor Smart Decision shows ads.
Which is updated more often, Arbitrium or Smart Decision?
Arbitrium ships an update every 28 months, and Smart Decision every 5 weeks. Most recently, Arbitrium was updated on October 13, 2026 and Smart Decision on October 9, 2026.

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