# TakeoffAlert vs Vnav4+

The clearest difference is update cadence: Vnav4+ at daily against TakeoffAlert's every 9 months. TakeoffAlert's advantage is iOS requirement (15 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for TakeoffAlert against 5.0 for Vnav4+. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

TakeoffAlert ships an update every 9 months, Vnav4+ daily. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | TakeoffAlert | Vnav4+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/takeoffalert/id1559078198/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/vnav4-plus/id6478510518/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Daily** |
| Monetization | Free | Free |
| Size | 15 MB | 5 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Raymond Chase](https://appshunter.io/developer/1123451416) | [William Downing](https://appshunter.io/developer/1158046062) |

## What reviewers say

### TakeoffAlert

[App page](https://appshunter.io/ios/app/takeoffalert/id1559078198)

This app monitors your aircraft's takeoff performance in real-time, comparing actual data against planned performance. It provides intuitive feedback on your aircraft's position relative to runway requirements during takeoff.

**Highlights:** Real-time takeoff monitoring, Actual vs. planned performance comparison, Intuitive data display, Input takeoff data (TODA, Roll, Stopping Distance), Monitor takeoff position

**In-app purchases:** none


### Vnav4+

[App page](https://appshunter.io/ios/app/vnav4-plus/id6478510518)

This navigation app offers four specialized calculators for vertical flight path management. It includes tools for general climb/descent rates, instrument procedure descent angles, obstacle departure climb rates, and top of descent calculations.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TakeoffAlert free?

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

### Is Vnav4+ free?

Vnav4+ is free to download, with no in-app purchases.

### Which has better reviews, TakeoffAlert or Vnav4+?

TakeoffAlert and Vnav4+ are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do TakeoffAlert or Vnav4+ have ads?

Neither TakeoffAlert nor Vnav4+ shows ads.

### Which is updated more often, TakeoffAlert or Vnav4+?

TakeoffAlert ships an update every 9 months, and Vnav4+ daily. Most recently, TakeoffAlert was updated on October 6, 2026 and Vnav4+ on October 17, 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.*