# Rounding Numbers School vs Probability Calculator Plus

The clearest difference is rating: Rounding Numbers School at 5.0 against Probability Calculator Plus's 3.7. Rounding Numbers School also leads on iOS requirement (15.0 vs 17.6). Probability Calculator Plus's advantage is ads (none vs shown) and price ($2.99 vs $4.99). On update cadence, in-app purchases, monetization model and device support there is nothing between them.

Rounding Numbers School costs $4.99 and Probability Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rounding Numbers School holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Rounding Numbers School ships an update every 12 months, Probability Calculator Plus every 23 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rounding Numbers School | Probability Calculator Plus |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rounding-numbers-school/id783470722/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 12 months** | Every 23 months |
| Monetization | Paid | Paid |
| Size | 14 MB | 1 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Rounding Numbers School

[App page](https://appshunter.io/ios/app/rounding-numbers-school/id783470722)

Practice and test your skills in rounding numbers with this educational app. It offers various modes and options to help you master rounding decimals, whole numbers, and more place values. Play until you achieve mastery.

**Highlights:** Rounding decimals, Rounding whole numbers, Multiple place values, Practice mode, Quiz mode, Customizable problem count

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Rounding Numbers School free?

Rounding Numbers School costs $4.99, with no in-app purchases.

### Is Probability Calculator Plus free?

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

### Which has better reviews, Rounding Numbers School or Probability Calculator Plus?

Rounding Numbers School is rated higher. Rounding Numbers School averages 5.0 out of 5 from 1 ratings, while Probability Calculator Plus averages 3.7 from 3 ratings.

### Do Rounding Numbers School or Probability Calculator Plus have ads?

Rounding Numbers School shows ads; Probability Calculator Plus does not.

### Which is updated more often, Rounding Numbers School or Probability Calculator Plus?

Rounding Numbers School ships an update every 12 months, and Probability Calculator Plus every 23 months. Most recently, Rounding Numbers School was updated on October 7, 2026 and Probability Calculator Plus on October 24, 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.*