# Probability vs StatsSims

The clearest difference is review sentiment: Probability at 97% against StatsSims's 50%. Probability also leads on rating (4.9 vs 4.2) and ratings volume (193 vs 5). StatsSims's advantage is price (Free vs $1.99) and iOS requirement (6.0 vs 14.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

StatsSims is free to download; Probability costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Probability holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Probability has 193 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 97% of Probability's written reviews are positive against 50% of StatsSims's.

Probability ships an update every 3 months, StatsSims every 2 months. The most recent releases landed on September 27, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Probability | StatsSims |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.9 (193 ratings)](https://appshunter.io/ios/app/probability-distributions/id889106396/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/statssims/id1111648635/reviews) |
| Number of ratings | **193** | 5 |
| Positive reviews | **97.2% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 187 MB |
| Requires iOS | 14.0 | **6.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Matthew Bognar](https://appshunter.io/developer/889106399) | [New York University](https://appshunter.io/developer/485666462) |

## What reviewers say

### Probability

[App page](https://appshunter.io/ios/app/probability-distributions/id889106396)

Calculate probabilities, find percentiles, and visualize probability density or mass functions for a wide range of continuous and discrete statistical distributions. Explore common distributions like normal, binomial, Poisson, and many more.

**Highlights:** Compute probabilities, Determine percentiles, Plot probability density function, Plot probability mass function, Supports 10+ continuous distributions, Supports 5+ discrete distributions

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 📊 Great for probability distributions
- 💡 Useful for checking work and homework
- 💰 Free advanced functions
- 📈 Visualizes data and distributions

**What reviewers complain about**

- 🚫 Not allowed on some exams
- 🤔 Some users want more features

**Requested features**

- Exam mode similar to Geogebra
- Poisson distribution
- Allow setting plot boundaries (e.g., for Beta distribution)
- Make formulae available in offline mode
- Clearly introduce parameters


### StatsSims

[App page](https://appshunter.io/ios/app/statssims/id1111648635)

Explore statistical concepts with interactive simulations designed for introductory statistics courses. Covers topics from sampling to distributions, with more to come.

**Highlights:** Interactive statistical simulations, Introductory statistics topics, Sampling and distributions, Confidence intervals, Regression and correlation, Future topic additions planned

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Probability free?

Probability costs $1.99, with no in-app purchases.

### Is StatsSims free?

StatsSims is free to download, with no in-app purchases.

### Which has better reviews, Probability or StatsSims?

Probability is rated higher. Probability averages 4.9 out of 5 from 193 ratings, while StatsSims averages 4.2 from 5 ratings.

### Do Probability or StatsSims have ads?

Neither Probability nor StatsSims shows ads.

### Which is updated more often, Probability or StatsSims?

Probability ships an update every 3 months, and StatsSims every 2 months. Most recently, Probability was updated on September 27, 2026 and StatsSims on June 11, 2026.

---

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