# Binomial Probability P(X=k) vs SteamWater

The clearest difference is in-app purchases: SteamWater at none against Binomial Probability P(X=k)'s 8. Binomial Probability P(X=k)'s advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, update cadence and ads there is nothing between them.

Both are free to download. Binomial Probability P(X=k) sells 8 one-off in-app purchases. SteamWater asks for nothing beyond the download.

Binomial Probability P(X=k) ships an update every 3 weeks, SteamWater every 6 weeks. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Binomial Probability P(X=k) | SteamWater |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 180 MB | 3 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Salvador Huertas](https://appshunter.io/developer/1796699694) |

## What reviewers say

### Binomial Probability P(X=k)

[App page](https://appshunter.io/ios/app/binomial-probability-pxk/id6472449007)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Lifetime Access | $1.99 | one-time |
| Remove Ads | $1.99 | one-time |


### SteamWater

[App page](https://appshunter.io/ios/app/steamwater/id6742078820)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Binomial Probability P(X=k) free?

Binomial Probability P(X=k) is free to download, with in-app purchases available.

### Is SteamWater free?

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

### Do Binomial Probability P(X=k) or SteamWater have ads?

Neither Binomial Probability P(X=k) nor SteamWater shows ads.

### Which is updated more often, Binomial Probability P(X=k) or SteamWater?

Binomial Probability P(X=k) ships an update every 3 weeks, and SteamWater every 6 weeks. Most recently, Binomial Probability P(X=k) was updated on October 2, 2026 and SteamWater on October 16, 2026.

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