# Virtual PAPI vs E6B Slide Rule

The clearest difference is price: Virtual PAPI at Free against E6B Slide Rule's $2.99. E6B Slide Rule's advantage is chart position (#53 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Virtual PAPI is free to download; E6B Slide Rule costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Virtual PAPI | E6B Slide Rule |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/virtual-papi/id6755373746/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free | — |
| Best chart rank | — | **#53** |
| Size | 4 MB | 2 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Marlon Dutra](https://appshunter.io/developer/1853486062) | [Western Chancellor LLC](https://appshunter.io/developer/6810377018) |

## What reviewers say

### Virtual PAPI

[App page](https://appshunter.io/ios/app/virtual-papi/id6755373746)

This app offers adjustable visual descent guidance for any runway, allowing pilots to select airports and runways, then customize descent angles and aiming points. It provides accurate vertical guidance for various approach types and works offline with an extensive runway database.

**Highlights:** Adjustable visual descent guidance, Select airport and runway, Customize descent angle and aiming point, Accurate vertical guidance, Works offline, 30,000+ runway database

**Features:** macOS Compatibility

**In-app purchases:** none


### E6B Slide Rule

[App page](https://appshunter.io/ios/app/e6b-slide-rule/id6810376836)

**Currently charting:** #53 Top Paid · Utilities (US App Store)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Virtual PAPI free?

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

### Is E6B Slide Rule free?

E6B Slide Rule costs $2.99, with no in-app purchases.

### Do Virtual PAPI or E6B Slide Rule have ads?

Neither Virtual PAPI nor E6B Slide Rule 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.*