# KDM Reader vs BM DIAG

The clearest difference is update cadence: KDM Reader at every 3 weeks against BM DIAG's every 2 months. BM DIAG's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

KDM Reader ships an update every 3 weeks, BM DIAG every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KDM Reader | BM DIAG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kdm-reader/id6476420239/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 1 MB | 396 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Center Point Post](https://appshunter.io/developer/1726641663) | [Woyou Intelligent Technology(Shenzhen) Co., Ltd.](https://appshunter.io/developer/1788255603) |

## What reviewers say

### 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


### BM DIAG

[App page](https://appshunter.io/ios/app/bm-diag/id6740069707)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KDM Reader free?

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

### Is BM DIAG free?

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

### Do KDM Reader or BM DIAG have ads?

Neither KDM Reader nor BM DIAG shows ads.

### Which is updated more often, KDM Reader or BM DIAG?

KDM Reader ships an update every 3 weeks, and BM DIAG every 2 months. Most recently, KDM Reader was updated on October 10, 2026 and BM DIAG on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*