# Fraction Calculator vs eTRAP

The clearest difference is in-app purchases: eTRAP at none against Fraction Calculator's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Fraction Calculator sells 5 in-app purchases, starting at $4.99 per month. eTRAP asks for nothing beyond the download.

Fraction Calculator ships an update monthly, eTRAP every 5 weeks. The most recent releases landed on September 27, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Fraction Calculator | eTRAP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (157 ratings)](https://appshunter.io/ios/app/fraction-calculator/id1078884704/reviews)** | — |
| Number of ratings | **157** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 115 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [USDA MRPBS IT](https://appshunter.io/developer/984062774) |

## What reviewers say

### Fraction Calculator

[App page](https://appshunter.io/ios/app/fraction-calculator/id1078884704)

This tool converts between decimals and fractions, and also handles unit conversions for construction and metric measurements. It offers an intuitive interface for calculations and editing, with advanced features available through upgrades.

**Highlights:** Decimal to fraction conversion, Fraction to decimal conversion, Unit conversion (feet, inches, metric), Simultaneous equation and result display, Advanced editing capabilities, Today Screen integration

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fraction Calculator | $4.99 | per month |
| Fraction Calculator | $39.99 | per year |
| Fraction Calculator Pro | $0.99 | one-time |
| Fraction Calculator | $3.99 | one-time |
| Fraction Calculator Plus | $4.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 🚀 Fast calculation performance
- 💡 Excellent for woodworking and construction projects
- 🎨 Clean, customizable design with multiple themes
- 📐 Handles fractions beautifully with imperial measurements

**What reviewers complain about**

- 💰 Extremely expensive subscription model
- 🔐 Paywall blocks most useful features in free version
- 😞 Recent update changed from free to paid model
- 🎯 Unclear which features require payment
- 🖱️ Small buttons prone to accidental clicks

**Reported bugs**

- App crashes on opening (iPad)
- Crashes when using plus buttons (iPad)
- Syntax errors during fraction calculations
- App closes immediately upon opening
- Unwanted decimal points in fraction results

**Requested features**

- Save calculations for later use
- Support for sixths and twelfths (for typography/design)
- Reorganizable or customizable unit lists
- Full fraction support on Apple Watch
- Free trial period before requiring subscription


### eTRAP

[App page](https://appshunter.io/ios/app/etrap/id1099214110)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fraction Calculator free?

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

### Is eTRAP free?

eTRAP is free to download, with no in-app purchases.

### Do Fraction Calculator or eTRAP have ads?

Neither Fraction Calculator nor eTRAP shows ads.

### Which is updated more often, Fraction Calculator or eTRAP?

Fraction Calculator ships an update monthly, and eTRAP every 5 weeks. Most recently, Fraction Calculator was updated on September 27, 2026 and eTRAP on June 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*