# KDM Inspector vs Trip Reader (NFC)

The clearest difference is price: Trip Reader (NFC) at Free against KDM Inspector's $2.99. Trip Reader (NFC) also leads on rating (4.7 vs 4.0) and update cadence (every 2 months vs every 38 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Trip Reader (NFC) is free to download; KDM Inspector costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trip Reader (NFC) holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Trip Reader (NFC) has 483 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of KDM Inspector's written reviews are positive against 93% of Trip Reader (NFC)'s, so the app with the better star average is not the one people write more warmly about.

KDM Inspector ships an update every 38 months, Trip Reader (NFC) every 2 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | KDM Inspector | Trip Reader (NFC) |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/kdm-inspector/id837578321/reviews) | **[4.7 (483 ratings)](https://appshunter.io/ios/app/trip-reader-nfc/id1488582968/reviews)** |
| Number of ratings | 1 | **483** |
| Positive reviews | **100.0% of reviews** | 92.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 5 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Judelson](https://appshunter.io/developer/813495416) | [Domosekai Limited](https://appshunter.io/developer/1488582967) |

## What reviewers say

### KDM Inspector

[App page](https://appshunter.io/ios/app/kdm-inspector/id837578321)

This utility app helps professionals working with Digital Cinema Packages (DCPs) and KDM encryption keys. It allows users to quickly open and view essential key information directly from their iOS device, supporting various file formats.

**Highlights:** Open KDM keys from email, View key active and expiration times, See show player public key and UUID, Supports .xml and .zip KDM files, Mobile DCP/KDM management

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

**In-app purchases:** none


### Trip Reader (NFC)

[App page](https://appshunter.io/ios/app/trip-reader-nfc/id1488582968)

Access your Chinese public transit card's balance and transaction history using your iPhone's NFC reader. View station names, monthly discounts, and bus routes without needing internet or Bluetooth. Save your travel history and sync it across devices.

**Highlights:** Read balance and history, Show station names, Track monthly discounts, Display bus route numbers, Save travel history, Sync to iCloud

**In-app purchases:** none


## Frequently asked questions

### Is KDM Inspector free?

KDM Inspector costs $2.99, with no in-app purchases.

### Is Trip Reader (NFC) free?

Trip Reader (NFC) is free to download, with no in-app purchases.

### Which has better reviews, KDM Inspector or Trip Reader (NFC)?

Trip Reader (NFC) is rated higher. KDM Inspector averages 4.0 out of 5 from 1 ratings, while Trip Reader (NFC) averages 4.7 from 483 ratings.

### Do KDM Inspector or Trip Reader (NFC) have ads?

Neither KDM Inspector nor Trip Reader (NFC) shows ads.

### Which is updated more often, KDM Inspector or Trip Reader (NFC)?

KDM Inspector ships an update every 38 months, and Trip Reader (NFC) every 2 months. Most recently, KDM Inspector was updated on September 30, 2026 and Trip Reader (NFC) on October 2, 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.*