# UP DL4U vs Probability Distribution

The clearest difference is in-app purchases: UP DL4U at none against Probability Distribution's 1. UP DL4U also leads on iOS requirement (11.0 vs 16.0). Probability Distribution's advantage is update cadence (every 2 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Probability Distribution sells 1 one-off in-app purchase. UP DL4U asks for nothing beyond the download.

UP DL4U ships an update every 7 months, Probability Distribution every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | UP DL4U | Probability Distribution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (17 ratings)](https://appshunter.io/ios/app/probability-distribution/id6447695305/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 76 MB | 7 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Centros Culturales de Mexico AC.](https://appshunter.io/developer/456331250) | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) |

## What reviewers say

### UP DL4U

[App page](https://appshunter.io/ios/app/up-dl4u/id1661727440)

**Features:** macOS Compatibility

**In-app purchases:** none


### Probability Distribution

[App page](https://appshunter.io/ios/app/probability-distribution/id6447695305)

This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.

**Highlights:** Calculate probabilities, Visualize distributions, Normal (Gaussian) distribution, Binomial distribution, Poisson distribution, Exponential distribution

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Distributions | $2.99 | one-time |


## Frequently asked questions

### Is UP DL4U free?

UP DL4U is free to download, with no in-app purchases.

### Is Probability Distribution free?

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

### Do UP DL4U or Probability Distribution have ads?

Neither UP DL4U nor Probability Distribution shows ads.

### Which is updated more often, UP DL4U or Probability Distribution?

UP DL4U ships an update every 7 months, and Probability Distribution every 2 weeks. Most recently, UP DL4U was updated on November 3, 2026 and Probability Distribution on November 3, 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.*