# Scientific Calculator With Normal/Gaussian Distribution vs Probability

The clearest difference is review sentiment: Probability at 97% against Scientific Calculator With Normal/Gaussian Distribution's 50%. Probability also leads on rating (4.9 vs 2.3) and update cadence (every 3 months vs every 12 months). Scientific Calculator With Normal/Gaussian Distribution's advantage is price (Free vs $1.99) and device support (3 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

Scientific Calculator With Normal/Gaussian Distribution is free to download; Probability costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Probability holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: Probability has 193 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Scientific Calculator With Normal/Gaussian Distribution's written reviews are positive against 97% of Probability's.

Scientific Calculator With Normal/Gaussian Distribution ships an update every 12 months, Probability every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Scientific Calculator With Normal/Gaussian Distribution | Probability |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/scientific-calculator-with-normalgaussian-distribution/id731342063/reviews) | **[4.9 (193 ratings)](https://appshunter.io/ios/app/probability-distributions/id889106396/reviews)** |
| Number of ratings | 3 | **193** |
| Positive reviews | 50.0% of reviews | **97.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Free | Free |
| Best chart rank | — | **#128** |
| Size | 3 MB | 7 MB |
| Requires iOS | **6.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [MODULAR Software & Services GmbH](https://appshunter.io/developer/731342066) | [Matthew Bognar](https://appshunter.io/developer/889106399) |

## What reviewers say

### Scientific Calculator With Normal/Gaussian Distribution

[App page](https://appshunter.io/ios/app/scientific-calculator-with-normalgaussian-distribution/id731342063)

This app calculates and plots normal and Gaussian distribution functions, including cumulative density functions for probabilities. It also functions as a scientific calculator with support for common mathematical and trigonometric functions, and allows direct text input of expressions.

**Highlights:** Normal/Gaussian distribution plotting, Cumulative density function calculation, Z and X value calculations, Scientific calculator functionality, Text expression input, Support for common math functions, Trigonometric functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Probability

[App page](https://appshunter.io/ios/app/probability-distributions/id889106396)

**Currently charting:** #128 Top Paid · Education (US App Store)

Calculate probabilities, find percentiles, and visualize probability density or mass functions for a wide range of continuous and discrete statistical distributions. Explore common distributions like normal, binomial, Poisson, and many more.

**Highlights:** Compute probabilities, Determine percentiles, Plot probability density function, Plot probability mass function, Supports 10+ continuous distributions, Supports 5+ discrete distributions

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 📊 Great for probability distributions
- 💡 Useful for checking work and homework
- 💰 Free advanced functions
- 📈 Visualizes data and distributions

**What reviewers complain about**

- 🚫 Not allowed on some exams
- 🤔 Some users want more features

**Requested features**

- Exam mode similar to Geogebra
- Poisson distribution
- Allow setting plot boundaries (e.g., for Beta distribution)
- Make formulae available in offline mode
- Clearly introduce parameters


## Frequently asked questions

### Is Scientific Calculator With Normal/Gaussian Distribution free?

Scientific Calculator With Normal/Gaussian Distribution is free to download, with no in-app purchases.

### Is Probability free?

Probability costs $1.99, with no in-app purchases.

### Which has better reviews, Scientific Calculator With Normal/Gaussian Distribution or Probability?

Probability is rated higher. Scientific Calculator With Normal/Gaussian Distribution averages 2.3 out of 5 from 3 ratings, while Probability averages 4.9 from 193 ratings.

### Do Scientific Calculator With Normal/Gaussian Distribution or Probability have ads?

Neither Scientific Calculator With Normal/Gaussian Distribution nor Probability shows ads.

### Which is updated more often, Scientific Calculator With Normal/Gaussian Distribution or Probability?

Scientific Calculator With Normal/Gaussian Distribution ships an update every 12 months, and Probability every 3 months. Most recently, Scientific Calculator With Normal/Gaussian Distribution was updated on November 1, 2026 and Probability on November 2, 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.*