# Whiteboard_Pay vs Arbitrium

The clearest difference is price: Arbitrium at Free against Whiteboard_Pay's $0.99. Arbitrium also leads on rating (4.9 vs 4.0) and ratings volume (11 vs 1). Whiteboard_Pay's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.6). On review sentiment, update cadence, ads and device support there is nothing between them.

Arbitrium is free to download; Whiteboard_Pay costs $0.99 up front. Arbitrium sells 1 one-off in-app purchase. Whiteboard_Pay asks for nothing beyond the download.

Arbitrium holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Arbitrium has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Whiteboard_Pay ships an update every 15 months, Arbitrium every 28 months. The most recent releases landed on July 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Whiteboard_Pay | Arbitrium |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/whiteboard-pay/id551447620/reviews) | **[4.9 (11 ratings)](https://appshunter.io/ios/app/arbitrium/id1369876075/reviews)** |
| Number of ratings | 1 | **11** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 28 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 8 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shun Sato](https://appshunter.io/developer/416043883) | [The Lost Project](https://appshunter.io/developer/380868134) |

## What reviewers say

### Whiteboard_Pay

[App page](https://appshunter.io/ios/app/whiteboard-pay/id551447620)

A minimalist whiteboard app designed for simplicity and smooth touch interaction. It offers essential tools like adjustable markers, an eraser, and a clear-all function. This app focuses on core functionality without unnecessary features.

**Highlights:** Adjustable marker thickness, Eraser with adjustable thickness, Clear all function, Minimalist interface, Smooth touch response

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Whiteboard_Pay free?

Whiteboard_Pay costs $0.99, with no in-app purchases.

### Is Arbitrium free?

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

### Which has better reviews, Whiteboard_Pay or Arbitrium?

Arbitrium is rated higher. Whiteboard_Pay averages 4.0 out of 5 from 1 ratings, while Arbitrium averages 4.9 from 11 ratings.

### Do Whiteboard_Pay or Arbitrium have ads?

Neither Whiteboard_Pay nor Arbitrium shows ads.

### Which is updated more often, Whiteboard_Pay or Arbitrium?

Whiteboard_Pay ships an update every 15 months, and Arbitrium every 28 months. Most recently, Whiteboard_Pay was updated on July 24, 2026 and Arbitrium on September 10, 2026.

---

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