# Video Size Calculator vs UAV PreFlight

The clearest difference is price: UAV PreFlight at Free against Video Size Calculator's $1.99. UAV PreFlight also leads on rating (5.0 vs 2.7) and update cadence (every 10 days vs every 59 months). Video Size Calculator's advantage is ratings volume (3 vs 1). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

UAV PreFlight is free to download; Video Size Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UAV PreFlight holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Video Size Calculator ships an update every 59 months, UAV PreFlight every 10 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Video Size Calculator | UAV PreFlight |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/video-size-calculator/id1092146568/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uav-preflight/id6787510378/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 10 days** |
| Monetization | Paid | **Free** |
| Size | 0 MB | 45 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takeshi Kayahashi](https://appshunter.io/developer/795541062) | [Sai Krishna Bolla](https://appshunter.io/developer/6787510380) |

## What reviewers say

### Video Size Calculator

[App page](https://appshunter.io/ios/app/video-size-calculator/id1092146568)

This tool helps you estimate video file sizes based on resolution, frame rate, and duration. It supports various units for easy conversion and allows for custom size inputs.

**Highlights:** Calculate approximate file capacity, Supports standard resolutions (HD, DVD), Custom size calculations, Converts between GB, MB, KB, and bytes, Input for total video time, Selectable FPS

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

**In-app purchases:** none


### UAV PreFlight

[App page](https://appshunter.io/ios/app/uav-preflight/id6787510378)

This app helps drone pilots assess weather and airspace conditions for safer flights. It analyzes various environmental factors against aircraft limits to determine flight readiness and provides detailed forecasts and airspace information.

**Highlights:** Weather condition evaluation, Aircraft operating limits comparison, Flight-readiness forecasts, Winds aloft data, Airspace boundary information, FAA obstacle data, Public-land drone guidance

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

**In-app purchases:** none


## Frequently asked questions

### Is Video Size Calculator free?

Video Size Calculator costs $1.99, with no in-app purchases.

### Is UAV PreFlight free?

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

### Which has better reviews, Video Size Calculator or UAV PreFlight?

UAV PreFlight is rated higher. Video Size Calculator averages 2.7 out of 5 from 3 ratings, while UAV PreFlight averages 5.0 from 1 ratings.

### Do Video Size Calculator or UAV PreFlight have ads?

Neither Video Size Calculator nor UAV PreFlight shows ads.

### Which is updated more often, Video Size Calculator or UAV PreFlight?

Video Size Calculator ships an update every 59 months, and UAV PreFlight every 10 days. Most recently, Video Size Calculator was updated on November 2, 2026 and UAV PreFlight on October 31, 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.*