RS vs DitLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RS
Control compatible transceivers, share voice and pictures, and view station locations on a map. Access received station information, send text messages, and manage call sign and repeater lists. Customize transceiver and application settings for a streamlined experience.
- Transceiver DR functions
- Send and receive voice and pictures
- Map repeater and station locations
- Read and edit received station information
- Send and receive text messages
- Manage call sign and repeater lists
- Import/Export data
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Functional overview of the application DR functions You can use some transceiver’s DR functions. Share pictures Send and receive voice and pictures. Map See the location of repeater sites or other stations on a map using received position data, or your transceiver’s repeater list. Automatically set the transceiver’s “FROM” and “TO” fields by tapping a repeater site or a station on the map. Receive History In the DV mode, read and edit the received station’s information. Download additional information from an Internet database, such as QRZ.com or APRS.fi. Text messaging Send and receive text messages. Call Sign list Edit call signs and names used in the DR function. Also, you can add a call sign and a name in the Call Sign list. Repeater list See the detailed data entered in the Repeater list. Transceiver settings Change some of the transceiver’s function settings. Application settings Select application software settings. Import Import a Repeater list or a Call Sign list. Export Export a Repeater list, a Call Sign list, or Receive History. See the transceiver’s instruction manual for details. The instruction manual can be downloaded from the ICOM web site. Device requirements The RS-MS1I operating requirements are as follows: iOS16 or later Usable transceivers (As of May 2026) - ID-4100A/E + Bluetooth unit (UT-137) - ID-52A or ID-52E *1 - ID-52A PLUS or ID-52E PLUS *2 - ID-5200A or ID-5200E *3 - IC-705 *4 *1 Supported in RS-MS1I Ver.1.1.0 or later. *2 Supported in RS-MS1I Ver.1.3.0 or later. *3 Supported in RS-MS1I Ver.1.4.0 or later. *4 Supported in RS-MS1I Ver.1.2.0 or later. Preparation To use the RS-MS1I with a supported transceiver, you need an optional Bluetooth unit. See your transceiver’s instruction manual for details. Transceiver’s settings Set the following functions as shown below to use the RS-MS1I. [Function] > [CI-V] > [CI-V Transceive]: ON [Bluetooth Set] > [Data Device Set] > [Serial Port Function]: CI-V (Echo back OFF) Note: - The RS-MS1I may not work with all iPhones or iPads, even if they are one of the tested devices. This is because an application program on your device may conflict with the RS-MS1I. - The RS-MS1I may not be used, depending on the OS version, installed application, and so on. - Bluetooth LE is used for the connection with the transceiver, so there may be a time delay between the transceiver’s operation and the display on the iPhone or iPad. - When sending or receiving pictures using “FAST mode,” the headset audio will be temporarily interrupted because of the transceiver’s Bluetooth unit limitations. - You may need to connect to the Internet through a Wireless LAN, an LTE network or a 5G network for some functions. - The RS-MS1I supports only portrait orientation with the iPhone. It does not support Auto Rotate. However, landscape orientation and Auto Rotate are supported with the iPad.
DitLog
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DitLog は、アマチュア無線のCW(モールス信号)をリアルタイムに解読する、macOS / iPhone / iPad 対応のデコーダーアプリです。受信機のスピーカー音、ライン/オーディオインターフェイス入力、録音済みの音声ファイルから、モールス符号を文字へと変換します。 ■ 主な機能 ・リアルタイム解読:マイク/ライン入力の受信音をその場で文字に変換します。 ・音声ファイル対応:WAV / MP3 / AIFF などの録音を読み込み、全体を高精度に解読します。 ・和文・欧文の自動判定:欧文モールスと和文モールスを自動で切り替えて表示します。 ・受信波形の可視化:キーイングの様子を波形で表示。受信状態がひと目で分かります。 ・トーン同調:ピッチ(トーン周波数)をスライダーで合わせ、目的の信号を狙って解読します。 ・ノイズに配慮した検出:静かな環境の雑音を拾いにくいスケルチを内蔵。実測に基づく設定で、弱い信号は残しつつ余計な誤検出を抑えます。 ・QSO情報の自動抽出:解読テキストからコールサイン・RST などを自動で拾い出し、ログ入力の下書きに反映します。 ・ADIF 書き出し:交信データを ADIF 形式で書き出せます。HamLogJP と互換のフィールドに対応し、ログ管理アプリへ受け渡せます。 ・キーボードからCW送出:入力した文章をモールス符号に変換し、CW 音として再生します(WPM・トーン可変)。和文・欧文どちらにも対応。 ■ こんな方に ・CWの練習中で、受信内容を文字で確かめたい方 ・パイルアップやコンテストで、コールサインの取りこぼしを減らしたい方 ・録音した交信をあとから文字起こししたい方 ・ログ管理アプリ(HamLogJP など)へ交信データを渡したい方 ■ 入力方法 内蔵マイクでの受信音ピックアップに加え、オーディオインターフェイスやライン入力を使えば、無線機の音声を直接取り込めます。直結入力は雑音が少なく、最も安定して解読できます。 ■ プライバシー DitLog は個人情報を収集しません。トラッキングも行いません。音声はデコードのために端末内で処理され、外部に送信されることはありません。 DitLog は、日々の運用と練習に寄り添う、シンプルで実用的なCWデコーダーを目指しています。フィードバックをお待ちしています。73!
Screenshots
Verdict
The clearest difference is in-app purchases: RS at none against DitLog's 1. DitLog's advantage is update cadence (weekly vs every 8 months). On price, ads, 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
Both are free to download. DitLog sells 1 one-off in-app purchase. RS asks for nothing beyond the download.
RS ships an update every 8 months, DitLog weekly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.
| Parameter | RS | DitLog |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (76 ratings) — better | — |
| Positive reviews | 14.7% of reviews | — |
| Number of ratings | 76 — better | — |
| Update frequency | Every 8 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 34 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ICOM INCORPORATED | Hashimoto Yoshikazu |
Bugs and requests
RS
Reported bugs
29 issues- App crashes when using map function
- App crashes on map screen
- App closes when opening map
- Not staying connected to the app
- Connection unsuccessful error message
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- Bluetooth pairing not working
- Connects and immediately disconnects
- Does not download full repeater list
- Bluetooth connection fails
- App crashes when selecting a picture to send
- Photo import force closes app
- App bombing out when trying to add a photo
- Attempting to transfer photos crashes every time
- Cannot get app to pair
- App sees radio but won't connect
- App won't connect
- Cannot connect app to iPhone
- ID-52A not pairing
- App instantly sees device but fails to connect
- Bluetooth connection does not happen
- App crashes trying to share photo
- App picture send capability is INOP
- App force closes / crashes on photo import
- Cannot get it to connect on either device
- App doesn't work with ICOM ID-5100
- App doesn't work with 4100 on iOS 15
- App doesn't work with iPhone 6s+
- Bluetooth connection does not happen after lengthy labours
- App has not been updated in almost a year
Requested features
12 requests- Add support for ID-5100
- Add support for ID-51A Plus 2
- Add support for ID-50
- Add support for IC-705
- Improve repeater list
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- Import repeater lists via Files/OneDrive/Dropbox
- Serial port support via USB
- Add support for ID-4100A with BT module
- Add support for IC-2820
- Update for iOS 15
- Update for iOS 16
- Update for iOS 18
DitLog
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RS
No in-app purchases
DitLog
- Full Unlock$1.99









