Arbitrium vs DECIDE
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?
DECIDE
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Two options. A clearer perspective. DECIDE by RONIQ helps you organize your thoughts and approach everyday decisions more thoughtfully. Enter your question and two options. Use simple sliders to rate which option matters more, takes less effort and feels right. YOUR RATINGS MATTER All active criteria count equally. The result summarizes which option your ratings favor. Clarity describes how strongly your inputs favor one option, not its chance of success. Neutral ratings or a tie produce no recommendation. PREFER TO LEAVE IT TO CHANCE? Let your device randomly pick one of the two options. Random decisions have no clarity score. MADE FOR EVERYDAY CHOICES • A short introduction explaining how it works • Saved decisions in your history • Light and dark modes • Support for accessibility features and larger text • 10 free decisions per calendar month DECIDE PRO Unlock unlimited decisions, up to three additional custom criteria and an ad-free experience. One-time purchase. No subscription. The price is shown in the app before purchase. Your questions, options and saved decisions stay locally on your device. The free version contains advertising. Information about advertising services and privacy is available at https://roniq.io/Datenschutz.html. DECIDE supports your thinking. The final choice remains yours.
Screenshots
Verdict
The clearest difference is update cadence: DECIDE at every 2 weeks against Arbitrium's every 28 months. Arbitrium's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.6). On price, 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 DECIDE sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Arbitrium ships an update every 28 months, DECIDE every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | Arbitrium | DECIDE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (11 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 28 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | 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 | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | The Lost Project | Roniq GmbH |
In-app purchases
Arbitrium
- PRO Mode$0.99
DECIDE
- DECIDE Pro Lifetime$5.99









