# Vnav4+

> Vertical navigation calculators for flight path planning and descent management. (iPhone/iPad app by William Downing.)

- Source: https://appshunter.io/ios/app/vnav4-plus/id6478510518 (this page in markdown: same URL + `.md`)
- Developer: [William Downing](https://appshunter.io/developer/1158046062)
- Category: Navigation, Travel
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 17.0 · 5 MB
- Languages: English
- Released: 2024-03-06
- Data updated: 2026-06-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/vnav4-plus/id6478510518/reviews.md

## What is Vnav4+?

This is a Vertical Navigation app. it has four different climb or descent calculators. A generic rate of climb and rate of descent calculator. A rate of of descent calculator for those Instrument procedures where there is a published vertical descent angle. An obstacle departure rate of climb calculator.  And, a top of descent calculator.

## Key features

- Generic rate of climb calculator
- Generic rate of descent calculator
- Instrument procedure descent angle calculator
- Obstacle departure rate of climb calculator
- Top of descent calculator


## Frequently asked questions about Vnav4+

### What are the main features of Vnav4+?

Vnav4+ provides four distinct vertical navigation calculators: a generic rate of climb/descent calculator, an instrument procedure descent angle calculator, an obstacle departure rate of climb calculator, and a top of descent calculator.

### Is Vnav4+ free to use?

Yes, Vnav4+ is available for free, with no in-app purchases or advertisements, as indicated by its pricing and monetization model.

### What devices is Vnav4+ compatible with?

Vnav4+ is designed for iOS devices, specifically compatible with both iPhone and iPad.

### How often is Vnav4+ updated?

The app was last updated on March 25, 2024, indicating recent development and maintenance by the developer.

### What is the age rating for Vnav4+?

Vnav4+ has an age rating of 17+, suggesting it is intended for mature users due to the complexity of its aviation-related functions.

### Can Vnav4+ be used offline?

While not explicitly stated, navigation and calculation apps often function offline. However, for the most up-to-date information, an internet connection may be beneficial.

### What is the user feedback on Vnav4+?

Vnav4+ has received a perfect rating of 5.0 stars from one user review, indicating positive initial reception.

### Does Vnav4+ have ads?

No, Vnav4+ is ad-free. The application does not contain advertisements, providing an uninterrupted user experience.

## Version history (last 5 releases)

### 2.3 — 2024-03-25

Accuracy improvements Top of Descent (TOD) calculator.

### 2.1 — 2024-03-18

Calculated outputs are no longer reset to zero's when switching between calculators.

### 1.9 — 2024-03-17

Minor enhancementments.

### 1.7 — 2024-03-16

Converted time to minutes:seconds(e.g. 4.5 is converted to 4:30)

### 1.6 — 2024-03-15

Minor enhancements.

## More apps by William Downing

- [SEROC 55/58](https://appshunter.io/ios/app/seroc-5558/id1158591690)

All apps by William Downing: https://appshunter.io/developer/1158046062

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-03.*