# Truth Table Builder vs Probability Calculator Plus

The clearest difference is rating: Truth Table Builder at 4.7 against Probability Calculator Plus's 3.7. Truth Table Builder also leads on update cadence (every 6 months vs every 23 months) and ratings volume (58 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

Truth Table Builder costs $1.99 and Probability Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Truth Table Builder holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Truth Table Builder has 58 ratings behind it against 3, so its average is the more settled of the two.

Truth Table Builder ships an update every 6 months, Probability Calculator Plus every 23 months. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Truth Table Builder | Probability Calculator Plus |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | **[4.7 (58 ratings)](https://appshunter.io/ios/app/truth-table-builder/id882579372/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/probability-calculator-plus/id1625628315/reviews) |
| Number of ratings | **58** | 3 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 23 months |
| Monetization | Paid | Paid |
| Best chart rank | **#194** | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ketan Appa](https://appshunter.io/developer/576435759) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Truth Table Builder

[App page](https://appshunter.io/ios/app/truth-table-builder/id882579372)

**Currently charting:** #194 Top Paid · Education (US App Store)

Easily construct truth tables from Boolean formulas. This app supports up to 8 variables and can display sub-expressions, ensuring the original truth function is preserved. It offers a custom keyboard for input, saves and shares tables, and allows operator customization.

**Highlights:** Build truth tables up to 8 variables, Shows sub-expressions, Preserves original truth function, Generates random expressions, Supports custom operators and constants, Saves and shares truth tables

**Features:** Vision Pro support

**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 Truth Table Builder free?

Truth Table Builder costs $1.99, 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, Truth Table Builder or Probability Calculator Plus?

Truth Table Builder is rated higher. Truth Table Builder averages 4.7 out of 5 from 58 ratings, while Probability Calculator Plus averages 3.7 from 3 ratings.

### Do Truth Table Builder or Probability Calculator Plus have ads?

Neither Truth Table Builder nor Probability Calculator Plus shows ads.

### Which is updated more often, Truth Table Builder or Probability Calculator Plus?

Truth Table Builder ships an update every 6 months, and Probability Calculator Plus every 23 months. Most recently, Truth Table Builder was updated on September 9, 2026 and Probability Calculator Plus on September 21, 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.*