# 5Counter: Binomial Probs — View outcome probability.

> View outcome probability. (iPhone/iPad app by RYOYA GOJO.)

- Source: https://appshunter.io/ios/app/5counter-binomial-probs/id6757778131 (this page in markdown: same URL + `.md`)
- Developer: [RYOYA GOJO](https://appshunter.io/developer/1868880653)
- Category: Finance, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 13 MB
- Languages: American English, Japanese
- Released: 2026-01-26
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/5counter-binomial-probs/id6757778131/reviews.md

## What is 5Counter?

This counter app prioritizes ease of use with large buttons for intuitive operation.

Simply tap a button to easily record counts,
and with each press, the current occurrence rate and probability are automatically calculated in real time.
Grasp the situation on the spot without worrying about complex calculations.

Furthermore, it includes a dedicated page that calculates probabilities using the binomial distribution.
Based on the actual number of occurrences and the expected occurrence rate,
you can see the numerical value representing “the probability this result would occur.”

Don't rely solely on intuition—make probability and numbers your allies.

Translated with DeepL.com (free version)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |
| Preset Expansion | $0.99 | one-time |



## Version history (last 5 releases)

### 1.1.0 — 2026-03-05

Added in-app purchase functionality.

### 1.0.5 — 2026-02-27

We have partially revised the method of displaying advertisements.

### 1.0.4 — 2026-01-30

・Updated the store page.
・Made other adjustments.

### 1.0.3 — 2026-01-27

・ストアページを見直しました。
・その他の調整を行いました。

### 1.0.2 — 2026-01-26

No release notes.

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## More apps by RYOYA GOJO

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All apps by RYOYA GOJO: https://appshunter.io/developer/1868880653

## Related topics

[ryoko](https://appshunter.io/ios/topics/ryoko)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*