# Probability Calculator Plus vs JavaScript Compiler(Pro)

The clearest difference is update cadence: JavaScript Compiler(Pro) at every 7 months against Probability Calculator Plus's every 23 months. JavaScript Compiler(Pro) also leads on iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Probability Calculator Plus costs $2.99 and JavaScript Compiler(Pro) $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Probability Calculator Plus ships an update every 23 months, JavaScript Compiler(Pro) every 7 months. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Probability Calculator Plus | JavaScript Compiler(Pro) |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 7 months** |
| Monetization | Paid | — |
| Size | 1 MB | 62 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [Hrishi Suthar](https://appshunter.io/developer/1660005858) |

## What reviewers say

### Probability Calculator Plus

[App page](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315)

Master probability and statistics with instant, step-by-step solutions for various calculations and distributions. Includes a random experiment simulator and a comprehensive reference guide.

**Highlights:** Basic and conditional probability calculations, Venn diagram calculator with visual representation, Statistical distributions (Binomial, Normal, Poisson), Random experiment simulator (dice, coins, cards), Step-by-step solutions for all calculations, Calculation history and reference guide

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

**In-app purchases:** none


### JavaScript Compiler(Pro)

[App page](https://appshunter.io/ios/app/javascript-compilerpro/id6747161212)

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

**In-app purchases:** none


## Frequently asked questions

### Is Probability Calculator Plus free?

Probability Calculator Plus costs $2.99, with no in-app purchases.

### Is JavaScript Compiler(Pro) free?

JavaScript Compiler(Pro) costs $2.99, with no in-app purchases.

### Do Probability Calculator Plus or JavaScript Compiler(Pro) have ads?

Neither Probability Calculator Plus nor JavaScript Compiler(Pro) shows ads.

### Which is updated more often, Probability Calculator Plus or JavaScript Compiler(Pro)?

Probability Calculator Plus ships an update every 23 months, and JavaScript Compiler(Pro) every 7 months. Most recently, Probability Calculator Plus was updated on September 21, 2026 and JavaScript Compiler(Pro) on September 19, 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.*