# Binomial Probability P(X=k) vs EqCalc

The clearest difference is update cadence: Binomial Probability P(X=k) at every 3 weeks against EqCalc's every 2 months. Binomial Probability P(X=k) also leads on iOS requirement (15.0 vs 18.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Binomial Probability P(X=k) sells 8 one-off in-app purchases and EqCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Binomial Probability P(X=k) ships an update every 3 weeks, EqCalc every 2 months. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Binomial Probability P(X=k) | EqCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 180 MB | 11 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Jon Tonouchi](https://appshunter.io/developer/1814163396) |

## 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 |


### EqCalc

[App page](https://appshunter.io/ios/app/eqcalc-g/id6759407516)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Version | $2.99 | one-time |


## 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 EqCalc free?

EqCalc is free to download, with in-app purchases available.

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

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

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

Binomial Probability P(X=k) ships an update every 3 weeks, and EqCalc every 2 months. Most recently, Binomial Probability P(X=k) was updated on November 10, 2026 and EqCalc on November 5, 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.*