# Truth Table Builder vs Sharpen

The clearest difference is price: Sharpen at Free against Truth Table Builder's $0.99. Sharpen also leads on update cadence (fortnightly vs every 6 months) and ratings volume (3.3K vs 58). Truth Table Builder's advantage is in-app purchases (none vs 8) and review sentiment (60% vs 40%). On rating, ads and device support there is nothing between them.

Sharpen is free to download; Truth Table Builder costs $0.99 up front. Sharpen sells 8 in-app purchases, starting at $11.99 per month. Truth Table Builder asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Truth Table Builder against 4.7 for Sharpen. That said, the two scores are not equally well evidenced: Sharpen has 3.3K ratings behind it against 58, so its average is the more settled of the two. Written reviews are what separate them: 60% of Truth Table Builder's written reviews are positive against 40% of Sharpen's.

Truth Table Builder ships an update every 6 months, Sharpen fortnightly. The most recent releases landed on October 26, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Truth Table Builder | Sharpen |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.7 (58 ratings)](https://appshunter.io/ios/app/truth-table-builder/id882579372/reviews) | **[4.7 (3.3K ratings)](https://appshunter.io/ios/app/sharpen-college-exam-prep/id1595642363/reviews)** |
| Number of ratings | 58 | **3.3K** |
| Positive reviews | **60.0% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 194 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Ketan Appa](https://appshunter.io/developer/576435759) | [McGraw-Hill](https://appshunter.io/developer/325792150) |

## What reviewers say

### Truth Table Builder

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

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


### Sharpen

[App page](https://appshunter.io/ios/app/sharpen-college-exam-prep/id1595642363)

This app revolutionizes college exam preparation by assessing knowledge, identifying improvement areas, and offering personalized AI-driven study recommendations. It provides various study tools like quizzes, flashcards, videos, and AI-powered assistance to boost exam readiness.

**Highlights:** AI-driven study recommendations, Personalized knowledge gap analysis, Multiple quiz modes, Bite-sized video lessons, Interactive flashcards, AI study buddy for topic breakdown, Textbook-aligned content

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sharpen+ | $11.99 | per month |
| Sharpen+ | $17.99 | per month |
| Sharpen+ | $17.99 | per month |
| Sharpen+ 3 month | $29.99 | per 3 months |
| Sharpen+ 3 month | $29.99 | per 3 months |
| Sharpen+ 12 month BTS | $59.99 | per year |
| Sharpen+ 12 month | $89.99 | per year |
| Sharpen+ 12 month | $89.99 | per year |

**What reviewers like**

- 🚀 Helpful study tools
- 👍 Intuitive and easy to use
- 💡 Directly tied to textbooks
- 👍 Useful for exam preparation

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔒 Login and sign-in issues
- 💰 Subscription-based model
- 🤔 Limited subject coverage

**Reported bugs**

- Incorrect answer registrations
- Repeated questions across chapters
- Inability to restart quizzes
- Crashing and freezing issues

**Requested features**

- Expand subject coverage to include more disciplines
- Improve stability and reduce crashes
- Add support for landscape mode and multitasking on iPad
- Provide more variety and randomization of practice questions


## Frequently asked questions

### Is Truth Table Builder free?

Truth Table Builder costs $0.99, with no in-app purchases.

### Is Sharpen free?

Sharpen is free to download, with in-app purchases available.

### Which has better reviews, Truth Table Builder or Sharpen?

Sharpen is rated higher. Truth Table Builder averages 4.7 out of 5 from 58 ratings, while Sharpen averages 4.7 from 3.3K ratings.

### Do Truth Table Builder or Sharpen have ads?

Neither Truth Table Builder nor Sharpen shows ads.

### Which is updated more often, Truth Table Builder or Sharpen?

Truth Table Builder ships an update every 6 months, and Sharpen fortnightly. Most recently, Truth Table Builder was updated on October 26, 2026 and Sharpen on November 1, 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.*