Arbitrium vs Good 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?
Good Decision
This app helps you make informed choices by comparing options against your personal criteria. It uses a weighted scoring system to objectively determine the best path forward, with AI assistance for creating decision matrices from links, text, or descriptions. Available across Apple devices, it syncs automatically and offers multiple sharing options.
- Weighted decision matrices
- AI-powered matrix creation
- Cross-device sync via iCloud
- Share decisions as image, text, or spreadsheet
- Dark Mode support
- Offline decision making
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Make decisions you can stand behind. Good Decision is a weighted decision matrix for iPhone, iPad, and Mac. Compare your options against the criteria that matter to you — scored, weighted, and totalled so the best choice rises to the top. No gut feeling required. Just clarity. HOW IT WORKS Add your options and criteria, set a weight for each criterion, then score each option from 1 to 10. Good Decision multiplies scores by weights and surfaces the option that best fits your priorities — not anyone else's. AI-POWERED CREATION On supported devices, Apple Intelligence builds your matrix for you — privately, on-device: Paste a link — AI reads the page and extracts options, criteria, and specs Paste text — drop in an article or comparison, AI structures it into a matrix Describe it — type what you're deciding, and AI suggests criteria and options For current products, pasting a link gives you accurate, up-to-date specs. Prompts work best when structure matters more than live data. Your data never leaves your device. BUILT FOR APPLE iPhone, iPad, and Mac — one purchase, all devices Decisions sync automatically via iCloud Share as an image, text, or spreadsheet Full Dark Mode support Any choice with more than one option is worth a matrix. Picking an iPhone or MacBook. Weighing up job offers. Choosing where to move, what to buy, and where to eat. Requires iOS 26 / macOS 26 or later. Apple Intelligence features require a supported device.
Screenshots
Verdict
The clearest difference is rating: Arbitrium at 4.9 against Good Decision's 2.7. Arbitrium also leads on review sentiment (100% vs 67%) and iOS requirement (15.6 vs 26.0). Good Decision's advantage is update cadence (every 2 months vs every 28 months) and monetization model (free vs free with in-app purchases). On price, ratings volume, ads and in-app purchases 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 Good Decision sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Arbitrium holds the better App Store score, 4.9 against 2.7. Both are backed by a comparable volume of ratings — 11 and 6 respectively. Written reviews point the same way: 100% of Arbitrium's written reviews are positive against 67% of Good Decision's.
Arbitrium ships an update every 28 months, Good Decision every 2 months. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.
| Parameter | Arbitrium | Good Decision |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (11 ratings) — better | 2.7 (6 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 11 — better | 6 |
| Update frequency | Every 28 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 8 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | The Lost Project | Dever Consultancy Ltd |
Customer experience
Arbitrium
Good Decision
In-app purchases
Arbitrium
- PRO Mode$0.99
Good Decision
- Full Version$4.99







