# DRM+ SDR — Decodes DRM by Audio-in/DCP

> Decodes DRM by Audio-in/DCP (iPhone/iPad app by AlgorKorea Co., Ltd..)

- Source: https://appshunter.io/ios/app/drm-plus-sdr/id1475044823 (this page in markdown: same URL + `.md`)
- Developer: [AlgorKorea Co., Ltd.](https://appshunter.io/developer/1173452285)
- Category: Lifestyle, Utilities
- Price: $4.99
- Age rating: 4+
- Requires: iOS 12.0 · 6 MB
- Languages: American English
- Released: 2019-08-23
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/drm-plus-sdr/id1475044823/reviews.md

## What is DRM+ SDR?

Decodes DRM (Digital Radio Mondiale) signals coming in through the external microphone input (LINE-IN) or DCP file input.
(We need to supply DRM signal to microphone input.)

The DRM+ SDR app is for DRM30 decoding with HE-AAC, OPUS and xHE-AAC. The paid DRM+ SDR app decodes sound, metadata, slideshow, web browsers.
This app does not support decoding Journaline data in DRM signals.

The DRM+ app requires a RC high pass filter audio line as well as a RF front-end module with antenna, tuner, modulator, IF mixer, AF amplifier.

If a call is received while the app is running, please remove the audio line connected to the external microphone jack.


## Version history (last 5 releases)

### 1.0.7 — 2024-12-02

1. Since an error may occur when the packet size of Audio Service 2 is larger than 1024, the size limit has been changed from a fixed value to an optimal value.

### 1.0.6 — 2024-11-05

1. The AAC decoding codec update reduces or eliminates noise in certain audio files.

### 1.0.5 — 2022-09-29

1. Support iOS version 12.x

### 1.0.4 — 2022-09-27

1. Significantly improved user interface and usage
2. Improved decoding performance
3. xHE-AAC codec support
4. Support LINE-IN input and DCP file input
5. Support pass through function to pass audio input to output as it is
6. Updated LINE-IN Connection RC Schematic
7. Test the latest iOS support
8. iPhone 14 series support

### 1.0.3 — 2020-01-14

1. Add xHE-AAC decoder codec.
2. Change UI.

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## More apps by AlgorKorea Co., Ltd.

- [Hearing Aid Smart](https://appshunter.io/ios/app/hearing-aid-smart/id1173452286)
- [Hearing Smart 5920](https://appshunter.io/ios/app/hearing-smart-5920/id1226894627)
- [Hearing Smart CSR](https://appshunter.io/ios/app/hearing-smart-csr/id1229528829)
- [Smart AMP](https://appshunter.io/ios/app/smart-amp/id1438078177)
- [Clear AMP](https://appshunter.io/ios/app/clear-amp/id1493506572)

All apps by AlgorKorea Co., Ltd.: https://appshunter.io/developer/1173452285

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*