# KeyCalc vs HTMLViewer Pro+

The clearest difference is price: KeyCalc at Free against HTMLViewer Pro+'s $2.99. HTMLViewer Pro+'s advantage is iOS requirement (16.6 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

KeyCalc is free to download; HTMLViewer Pro+ costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | KeyCalc | HTMLViewer Pro+ |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keycalc-retro-calculator/id6742797760/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Free | — |
| Size | 23 MB | 3 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wayne Dahlberg](https://appshunter.io/developer/398086194) | [倩 罗](https://appshunter.io/developer/1653510118) |

## What reviewers say

### KeyCalc

[App page](https://appshunter.io/ios/app/keycalc-retro-calculator/id6742797760)

This calculator app offers a fun, retro-style interface inspired by mechanical keyboards and vintage LED displays. It provides a simple and enjoyable user experience for everyday calculations.

**Highlights:** Retro calculator design, Mechanical keyboard inspiration, Vintage LED display aesthetic, Simple and fun interface, Basic calculation functions

**Features:** macOS Compatibility

**In-app purchases:** none


### HTMLViewer Pro+

[App page](https://appshunter.io/ios/app/htmlviewer-pro-plus/id6746694144)

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

**In-app purchases:** none


## Frequently asked questions

### Is KeyCalc free?

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

### Is HTMLViewer Pro+ free?

HTMLViewer Pro+ costs $2.99, with no in-app purchases.

### Do KeyCalc or HTMLViewer Pro+ have ads?

Neither KeyCalc nor HTMLViewer Pro+ shows ads.

---

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