# Probability Calculator Plus vs Case Math Trainer

The clearest difference is price: Case Math Trainer at Free against Probability Calculator Plus's $2.99. Case Math Trainer also leads on rating (5.0 vs 3.7) and update cadence (weekly vs every 23 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Case Math Trainer is free to download; Probability Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Case Math Trainer holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 7 respectively.

Probability Calculator Plus ships an update every 23 months, Case Math Trainer weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Probability Calculator Plus | Case Math Trainer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/case-math-trainer/id6794442816/reviews)** |
| Number of ratings | 3 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [James Holm](https://appshunter.io/developer/6794442818) |

## 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


### Case Math Trainer

[App page](https://appshunter.io/ios/app/case-math-trainer/id6794442816)

Practice complex arithmetic and problem-solving skills under timed conditions, simulating real-world interview scenarios. Focuses on managing large numbers, identifying setup errors, and interpreting data from various charts. Includes spoken answer practice and adaptive training based on your performance.

**Highlights:** Timed arithmetic sprints with business magnitudes, Zero management drills, Word problems with separate formula scoring, Exhibit reading from charts, Spoken answer practice with speech recognition, Adaptive training based on weaknesses, Private by design, no account or tracking

**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 Case Math Trainer free?

Case Math Trainer is free to download, with no in-app purchases.

### Which has better reviews, Probability Calculator Plus or Case Math Trainer?

Case Math Trainer is rated higher. Probability Calculator Plus averages 3.7 out of 5 from 3 ratings, while Case Math Trainer averages 5.0 from 7 ratings.

### Do Probability Calculator Plus or Case Math Trainer have ads?

Neither Probability Calculator Plus nor Case Math Trainer shows ads.

### Which is updated more often, Probability Calculator Plus or Case Math Trainer?

Probability Calculator Plus ships an update every 23 months, and Case Math Trainer weekly. Most recently, Probability Calculator Plus was updated on November 3, 2026 and Case Math Trainer on October 31, 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.*