# Probability Sim - Trillion — Odds Calculator for 1T Trials

> Odds Calculator for 1T Trials (iPhone/iPad app by kota tada.)

- Source: https://appshunter.io/ios/app/probability-sim-trillion/id6743378063 (this page in markdown: same URL + `.md`)
- Developer: [kota tada](https://appshunter.io/developer/1658942612)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 29 MB
- Languages: Chinese (Simplified, China), Belarusian, Danish, Ukrainian, Urdu, Armenian, Russian, Bulgarian, Sinhala, Croatian and 61 more
- Released: 2025-03-19
- Data updated: 2026-10-22

## What is Probability Sim?

Probability Simulator 1T Trials is a powerful simulation app that lets you test probabilities to the extreme. Run up to 1 trillion trials and calculate probabilities as low as 1 in a trillion. Choose from decimal, percentage, or fraction notation. Simultaneously run multiple probability events for complex calculations. Perfect for statistics enthusiasts, mathematicians, and anyone interested in random trials. Sharpen your probability intuition and gain real insights from large-scale simulations.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ad-free for 1 year | $49.99 | per year |
| Ad-free for 1 month | $4.99 | per month |


## Is Probability Sim safe?

Not enough ratings yet to assess Probability Sim.

## Is Probability Sim legit?

Probability Sim - Trillion appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Probability Sim is 78 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 5.0.2 — 2026-10-12

Improved stability and support for the latest iOS. Fixed issues with ads and subscriptions.

### 5.0.1 — 2026-03-09

Bug fixes.

### 1.0 — 2025-03-19

No release notes.

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All apps by kota tada: https://appshunter.io/developer/1658942612

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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 2026-10-22.*