Comparison

Valiance Backbone for CW vs DitLog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Valiance Backbone for CW

Decode Morse code signals in real-time using your device's microphone. This app employs advanced FFT technology to accurately distinguish transceiver signals from noise, offering a high success rate for radio communications. It features a range of tools for signal analysis and log management.

Highlights
  • Real-time Morse code decoding via microphone
  • Advanced FFT technology for signal detection
  • Minimizes false decodes from noise
  • Morse Sound Recorder & Player
  • Export text logs and audio data
  • Predictive decoding for difficult codes
  • Tone and sound pressure measurement
Features
Read full description

Morse Decoder: Valiance Backbone for CW (VBC) VBC is the No. 1 Morse code decoder in the Japanese market, encompassing both paid and free categories. This app allows you to decode Morse code using the built-in microphone of your iPhone or iPod touch. VBC utilizes the world's fastest FFT (Fast Fourier Transform) technology to detect and decode carriers. It is specifically designed to minimize false decodes from atmospheric noise, voices, or beep sounds (square or trapezoidal waves). While it will not decode vocalized "dit-dah" sounds, it offers an extremely high success rate for decoding actual transceiver signals. (Please check our videos of real DX station communications). We believe its decoding capability surpasses that of many expensive dedicated hardware units and PC software. The carrier detection mode is highly effective, making it a truly practical tool for active hunting and pouncing in real-world radio operations. The default settings are optimized for the best performance balance. We recommend testing it with an actual radio (800Hz tone) at a short distance using the default configuration. Key Features: Morse Sound Recorder & Player Export text logs, audio data, and history via email Timestamp and cancel stamp insertion in logs Predictive decoding for difficult or connected Morse codes Zero-in Tone Indicator / Shift-in Indicator Tone frequency measurement (±5Hz) Sound pressure measurement (dB) Audio frequency response measurement & automatic correction Peak search / Manual frequency setting (double-tap screen) Automatic speed tracking / Manual speed setting (double-tap screen) Auto Level / Auto Threshold / Manual Threshold (double-tap screen) Noise reduction & waveform shaping via carrier detection Japanese (Wabun) Morse support Signal level adjustment Input Level Over-Range Indicator When the input level exceeds the range (Over-Range), the waveform becomes distorted, leading to poor decoding accuracy. If this happens, please move your device further away from the radio. (Avoid placing the device directly on a vibrating radio; maintain a sufficient distance. The app is designed to decode accurately even from a significant distance.)Supports decoding speeds from 5 to 40 WPM For more information and to see the app in action, please visit our YouTube channel for Real-DX videos and more: http://goo.gl/ALXAqH http://goo.gl/yEu3d1 http://goo.gl/7gp4yw Note: Due to scrolling issues on the decode screen since iOS 8, we utilize the following library for text display. Our sincere thanks to the developer: SECoreTextView Created by kishikawa katsumi on 2015/03/25. Copyright (c) 2013-2015 kishikawa katsumi. All rights reserved.

About

DitLog

Features
Read full description

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

Valiance Backbone for CW4 screens
DitLog4 screens

Verdict

The call

The clearest difference is price: DitLog at Free against Valiance Backbone for CW's $3.99. DitLog also leads on update cadence (weekly vs every 11 months). Valiance Backbone for CW's advantage is iOS requirement (11.0 vs 16.0). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

DitLog is free to download; Valiance Backbone for CW costs $3.99 up front. Valiance Backbone for CW sells 4 one-off in-app purchases and DitLog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Valiance Backbone for CW ships an update every 11 months, DitLog weekly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
Valiance Backbone for CW versus DitLog: the parameters behind the verdict, then further details
ParameterValiance Backbone for CWDitLog
Price$3.99Free — better
Rating2.0 (1 ratings) — better—
Positive reviews72.7% of reviews—
Number of ratings1 — better—
Update frequencyEvery 11 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS11.0 — better16.0
Further details — not scored
Size28 MB2 MB
Age rating4+4+
DeveloperNobHashimoto Yoshikazu

In-app purchases

4 purchases

Valiance Backbone for CW

One-time4
  • Tip for the Developer$0.99
  • Standard Support$4.99
  • Premium$9.99
Show 1 more
  • Ultimate Supporter$29.99
1 purchases

DitLog

One-time1
  • Full Unlock$1.99

Questions

Is Valiance Backbone for CW free?
Valiance Backbone for CW costs $3.99, and also offers in-app purchases.
Is DitLog free?
DitLog is free to download, with in-app purchases available.
Do Valiance Backbone for CW or DitLog have ads?
Neither Valiance Backbone for CW nor DitLog shows ads.
Which is updated more often, Valiance Backbone for CW or DitLog?
Valiance Backbone for CW ships an update every 11 months, and DitLog weekly. Most recently, Valiance Backbone for CW was updated on November 1, 2026 and DitLog on October 29, 2026.

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