Arbitrium vs Smart Decision
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Define decision criteria
- Rate available options
- Weighted decision matrix
- Identify best choice
- Save and manage decisions
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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?
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Arbitrium | Smart Decision |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (11 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 11 — better | 2 |
| Update frequency | Every 28 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | The Lost Project | Michael Klug |
Customer experience
Arbitrium
Smart Decision
In-app purchases
Arbitrium
- PRO Mode$0.99
Smart Decision
- Small Tip$0.99
- Medium Tip$4.99
- Large Tip$9.99
Questions
Is Arbitrium free?
Is Smart Decision free?
Which has better reviews, Arbitrium or Smart Decision?
Do Arbitrium or Smart Decision have ads?
Which is updated more often, Arbitrium or Smart Decision?
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