Whiteboard_Pay vs Arbitrium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Whiteboard_Pay
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.
- Adjustable marker thickness
- Eraser with adjustable thickness
- Clear all function
- Minimalist interface
- Smooth touch response
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「いいものは、シンプルだ。」 無駄な機能を極力省いたホワイトボードアプリです。 滑らかなタッチを再現しました。 基本性能 ■3種類のマーカー選択(太さ調整可能) ■消しゴム機能は消したい部分をなぞって消去(太さ調整可能) ■ごみ箱機能でオールクリア 広告非表示
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?
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Whiteboard_Pay | Arbitrium |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) | 4.9 (11 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 15 months — better | Every 28 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 2 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Shun Sato | The Lost Project |
Customer experience
Whiteboard_Pay
Arbitrium
In-app purchases
Whiteboard_Pay
No in-app purchases
Arbitrium
- PRO Mode$0.99
Questions
Is Whiteboard_Pay free?
Is Arbitrium free?
Which has better reviews, Whiteboard_Pay or Arbitrium?
Do Whiteboard_Pay or Arbitrium have ads?
Which is updated more often, Whiteboard_Pay or Arbitrium?
Other comparisons
