# Plus42 vs Signal Scaler

The clearest difference is price: Signal Scaler at $0.99 against Plus42's $9.99. Plus42's advantage is chart position (#161 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Plus42 costs $9.99 and Signal Scaler $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Plus42 | Signal Scaler |
| --- | --- | --- |
| Price | $9.99 | **$0.99** |
| Rating | **[4.9 (80 ratings)](https://appshunter.io/ios/app/plus42/id1597963622/reviews)** | — |
| Number of ratings | **80** | — |
| Positive reviews | 92.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Paid | — |
| Best chart rank | **#161** | — |
| Size | 12 MB | 1 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Okken](https://appshunter.io/developer/337692632) | [BRENDAN DANIAL MCSHANE](https://appshunter.io/developer/6799967788) |

## What reviewers say

### Plus42

[App page](https://appshunter.io/ios/app/plus42/id1597963622)

**Currently charting:** #161 Top Paid · Utilities (US App Store)

This advanced scientific calculator simulates the HP-42S RPN calculator with enhanced features. It offers algebraic expressions, unit conversions, directories for storage, a larger resizable display, time value of money functions, and 2D plotting with integral and root finding.

**Highlights:** HP-42S RPN calculator simulation, Algebraic expressions, Attached units and conversions, Program and variable directories, Resizable 8-row, 22-column display, Time value of money and amortization, 2D function plotting with zoom and pan

**Features:** Vision Pro support

**In-app purchases:** none


### Signal Scaler

[App page](https://appshunter.io/ios/app/signal-scaler/id6799967786)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plus42 free?

Plus42 costs $9.99, with no in-app purchases.

### Is Signal Scaler free?

Signal Scaler costs $0.99, with no in-app purchases.

### Do Plus42 or Signal Scaler have ads?

Neither Plus42 nor Signal Scaler shows ads.

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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.*