Video Size Calculator vs KDM Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Video Size Calculator
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.
- 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
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"Video Size Calculator" is a useful tool that will calculate the approximate file capacity after creating video easily. [Feature] The main frame size and frame rate can be calculated quickly because it is registered in the tab. Custom sizes can also be calculated by any numerical input. Calculated capacity is GB, MB, KB, can change the bytes and the unit does not need to be calculated each time. [How to use] 1. Choose from, such as full high-definition and DVD size. 2. The total time of the video, hour, minute, second input and respectively. 3. Select the FPS (frames displayed per second). 4. Calculate the approximate capacity and press the "Calculate" button. 5. The approximate file capacity was calculated switching in arbitrary units to confirm. Attention: In the case of bit rate calculation is calculated to enter a number from the time you turned on the switch. Please press again "Calculate" button if you want to change the number or tab recalculation. Please understand that only an approximate file capacity. The capacity of the sound source is not included.
KDM Reader
Easily verify KDM validity times, content version, and target DCP player. View information in your local timezone or UTC.
- Verify KDM validity times
- Check content version
- Identify target DCP player
- View in local timezone
- View in UTC
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The Center Point Post KDM reader allows for easy access to confidently verify KDM validity times, content version, and target DCP player in both your local timezone as well as UTC.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Video Size Calculator | KDM Reader |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 2.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 59 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, Mac |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 0 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Takeshi Kayahashi | Center Point Post |
Customer experience
Video Size Calculator
KDM Reader
In-app purchases
Video Size Calculator
No in-app purchases
KDM Reader
No in-app purchases
Questions
Is Video Size Calculator free?
Is KDM Reader free?
Which has better reviews, Video Size Calculator or KDM Reader?
Do Video Size Calculator or KDM Reader have ads?
Which is updated more often, Video Size Calculator or KDM Reader?
Other comparisons
