# Scientific Calculator DES vs RF Tools ++

The clearest difference is price: RF Tools ++ at $1.99 against Scientific Calculator DES's $5.99. RF Tools ++ also leads on update cadence (every 2 weeks vs every 5 weeks). Scientific Calculator DES's advantage is iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scientific Calculator DES costs $5.99 and RF Tools ++ $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scientific Calculator DES ships an update every 5 weeks, RF Tools ++ every 2 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Scientific Calculator DES | RF Tools ++ |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/scientific-calculator-des-38d/id1379779839/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 9 MB | 42 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) | [Jeff Curtis](https://appshunter.io/developer/358219019) |

## What reviewers say

### Scientific Calculator DES

[App page](https://appshunter.io/ios/app/scientific-calculator-des-38d/id1379779839)

This advanced calculator offers engineers and mathematicians a powerful tool with intuitive, multi-line display and left-to-right data entry. It supports various number bases, notations, and includes extensive statistical analysis and graphing capabilities. All features are available for a one-time purchase.

**Highlights:** Multi-line display with left-to-right entry, Supports Hex, Binary, Octal number bases, Decimal, Scientific, Fractional notation, Angle entry in degrees, radians, gradians, turns, 10 Memory Registers, Advanced statistics and graphing, Import CSV files for data sets

**Features:** macOS Compatibility

**In-app purchases:** none


### RF Tools ++

[App page](https://appshunter.io/ios/app/rf-tools-plus-plus/id1548209609)

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

**In-app purchases:** none


## Frequently asked questions

### Is Scientific Calculator DES free?

Scientific Calculator DES costs $5.99, with no in-app purchases.

### Is RF Tools ++ free?

RF Tools ++ costs $1.99, with no in-app purchases.

### Do Scientific Calculator DES or RF Tools ++ have ads?

Neither Scientific Calculator DES nor RF Tools ++ shows ads.

### Which is updated more often, Scientific Calculator DES or RF Tools ++?

Scientific Calculator DES ships an update every 5 weeks, and RF Tools ++ every 2 weeks. Most recently, Scientific Calculator DES was updated on October 24, 2026 and RF Tools ++ on October 27, 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.*