# Arbitrium vs Poker Notes Pro

The clearest difference is update cadence: Poker Notes Pro at every 4 months against Arbitrium's every 28 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Arbitrium sells 1 one-off in-app purchase and Poker Notes Pro sells 2 in-app purchases, starting at $9.90 per month. Whichever you choose, the download price is not the number that matters.

Arbitrium ships an update every 28 months, Poker Notes Pro every 4 months. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Arbitrium | Poker Notes Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/arbitrium/id1369876075/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 81 MB |
| Requires iOS | 15.6 | **14.0.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Lost Project](https://appshunter.io/developer/380868134) | [Vincent Videau](https://appshunter.io/developer/1730976037) |

## What reviewers say

### Arbitrium

[App page](https://appshunter.io/ios/app/arbitrium/id1369876075)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Mode | $0.99 | one-time |


### Poker Notes Pro

[App page](https://appshunter.io/ios/app/poker-notes-pro/id6478964709)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mensuel - 1 Mois Offert | $9.90 | per month |
| Annuel - 1 Mois Offert | $99.00 | per year |


## Frequently asked questions

### Is Arbitrium free?

Arbitrium is free to download, with in-app purchases available.

### Is Poker Notes Pro free?

Poker Notes Pro is free to download, with in-app purchases available.

### Do Arbitrium or Poker Notes Pro have ads?

Neither Arbitrium nor Poker Notes Pro shows ads.

### Which is updated more often, Arbitrium or Poker Notes Pro?

Arbitrium ships an update every 28 months, and Poker Notes Pro every 4 months. Most recently, Arbitrium was updated on September 28, 2026 and Poker Notes Pro on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*