# Video Size Calculator vs KDM Reader

The clearest difference is price: KDM Reader at Free against Video Size Calculator's $1.99. KDM Reader also leads on rating (5.0 vs 2.7) and update cadence (every 3 weeks 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.

KDM Reader 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.

KDM Reader 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, KDM Reader every 3 weeks. The most recent releases landed on August 27, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Video Size Calculator | KDM Reader |
| --- | --- | --- |
| 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/kdm-reader/id6476420239/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 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 0 MB | 1 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPod | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Takeshi Kayahashi](https://appshunter.io/developer/795541062) | [Center Point Post](https://appshunter.io/developer/1726641663) |

## 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


### KDM Reader

[App page](https://appshunter.io/ios/app/kdm-reader/id6476420239)

Easily verify KDM validity times, content version, and target DCP player. View information in your local timezone or UTC.

**Highlights:** Verify KDM validity times, Check content version, Identify target DCP player, View in local timezone, View in UTC

**In-app purchases:** none


## Frequently asked questions

### Is Video Size Calculator free?

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

### Is KDM Reader free?

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

### Which has better reviews, Video Size Calculator or KDM Reader?

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

### Do Video Size Calculator or KDM Reader have ads?

Neither Video Size Calculator nor KDM Reader shows ads.

### Which is updated more often, Video Size Calculator or KDM Reader?

Video Size Calculator ships an update every 59 months, and KDM Reader every 3 weeks. Most recently, Video Size Calculator was updated on August 27, 2026 and KDM Reader on June 5, 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.*