# Coin toss. Two sides of a coin — What is the fate?

> What is the fate? (iPhone/iPad app by akira ohmachi.)

- Source: https://appshunter.io/ios/app/coin-toss-two-sides-of-a-coin/id1559344863 (this page in markdown: same URL + `.md`)
- Developer: [akira ohmachi](https://appshunter.io/developer/1338624340)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 39 MB
- Languages: American English
- Released: 2021-03-20
- Data updated: 2026-07-18
- User reviews in markdown: https://appshunter.io/ios/app/coin-toss-two-sides-of-a-coin/id1559344863/reviews.md

## What is Coin toss. Two sides of a coin?

A fateful coin toss. But this time, you control the odds.

"Coin Toss" is traditionally a fair decision-making method with a 50/50 chance. However, this app features a unique function that allows you to freely change the ratio of heads and tails. It can be used not only for fair decisions but also for simulations with biased probabilities or game mechanics.

Main Features:
- Customize Ratios: Freely set the probability of heads and tails. Adjust it to 60:40, 80:20, or any ratio to suit your needs.
- Advanced Randomness: Generates unpredictable results based on your custom ratios.
- Simple Operation: A minimalist design that anyone can use intuitively.

Fairness & Mathematical Insights:
Theoretically, a fair coin has a 50% chance for both heads and tails. As the number of trials (n) increases, the actual measured values converge toward the expected value. Mathematically, this property is modeled by the "binomial distribution."

Use Cases:
- Decision Making: Quick guidance when it's hard to choose or when you want to weigh options.
- Games & TRPGs: A substitute for dice to simulate specific event probabilities.
- Education & Statistics: Perfect for learning the "Law of Large Numbers," where probabilities approach the set value over many trials.

Make a fair choice, or manipulate fate? Download now and let the coin spin!

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |



## Version history (last 5 releases)

### 2.9.0 — 2026-07-15

Updated the design.

### 2.7.0 — 2026-07-07

Added an option to remove ads. Improved the app to start smoothly without stopping, even if the network connection is unstable at startup.

### 2.4.4 — 2026-05-29

Improved overall stability and performance.

### 2.4.3 — 2026-05-25

We've enhanced privacy by supporting App Tracking Transparency.

### 2.4.0 — 2026-03-05

Added a button to the Settings page to open the App Store.

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| [ふつうのコイントス](https://appshunter.io/ios/app/id6444186802) | — | Free | Utilities |
| [Coin Flip - Coin Tossing App](https://appshunter.io/ios/app/coin-flip-coin-tossing-app/id6448116137) | — | Free | Utilities |
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| [Flip a Coin – OneToss](https://appshunter.io/ios/app/flip-a-coin-onetoss/id6743804010) | 5.0 (9) | Free | Utilities |
| [Coin Flip 3D - Toss It!](https://appshunter.io/ios/app/coin-flip-3d-toss-it/id1510680548) | 4.6 (155) | Free | Utilities |

## More apps by akira ohmachi

- [奥多摩ウォーキングマップ](https://appshunter.io/ios/app/id1453854955)
- [Wheel Lottery Machine](https://appshunter.io/ios/app/wheel-lottery-machine/id1559502572)
- [Bingo Machine](https://appshunter.io/ios/app/bingo-machine/id1561300296)
- [Roulette machine](https://appshunter.io/ios/app/roulette-machine/id1561612282)
- [Fortune slip](https://appshunter.io/ios/app/fortune-slip/id1561769646)

All apps by akira ohmachi: https://appshunter.io/developer/1338624340

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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 2026-07-18.*