# PROSTA vs Stats & Probability Calculator

The clearest difference is in-app purchases: PROSTA at none against Stats & Probability Calculator's 3. PROSTA also leads on update cadence (every 6 weeks vs every 4 months) and iOS requirement (13.0 vs 16.6). Stats & Probability Calculator's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Stats & Probability Calculator sells 3 in-app purchases, starting at $0.99 per month. PROSTA asks for nothing beyond the download.

PROSTA ships an update every 6 weeks, Stats & Probability Calculator every 4 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | PROSTA | Stats & Probability Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 23 MB | 27 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [masanori takata](https://appshunter.io/developer/1253822521) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### PROSTA

[App page](https://appshunter.io/ios/app/prosta/id1494633664)

Perform statistical calculations and create graphs easily on your mobile device. This app simplifies complex statistical analysis, offering features like data input, instant calculations, customizable graph generation, and a statistical term search function. It's designed for quick analysis without needing a computer.

**Highlights:** Easy statistical calculations, Instant data analysis, Customizable graph creation, Statistical term search, Random number generation for simulations, Distribution tables

**Features:** macOS Compatibility

**In-app purchases:** none


### Stats & Probability Calculator

[App page](https://appshunter.io/ios/app/stats-and-probability-calculator/id6748586083)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version / monthly | $0.99 | per month |
| Full version / year | $2.99 | per year |
| Remove ADS | $3.99 | one-time |


## Frequently asked questions

### Is PROSTA free?

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

### Is Stats & Probability Calculator free?

Stats & Probability Calculator is free to download, with in-app purchases available.

### Do PROSTA or Stats & Probability Calculator have ads?

PROSTA shows ads; Stats & Probability Calculator does not.

### Which is updated more often, PROSTA or Stats & Probability Calculator?

PROSTA ships an update every 6 weeks, and Stats & Probability Calculator every 4 months. Most recently, PROSTA was updated on November 3, 2026 and Stats & Probability Calculator on November 7, 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.*