Comparison

CW Decoder vs AeroMetry

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

Head to head
About

CW Decoder

Features
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High-Precision Morse Code Decoder(AI greatly improved the decoding rate!) Achieve noise-resistant, accurate Morse code decoding with high-precision, sample-level signal processing. Try the superior “listening performance” in the free version. Differences Between Free and Full Versions This app lets everyone try the high-performance decoding engine for free. Free Version - Continuous decoding: Up to 3 minutes per session (restart anytime, unlimited times) - Basic font display Ideal for testing performance and checking short communications. Full Version (Paid Add-on) - Unlimited time: For long ragchews and continuous monitoring - Font settings: Customize font type and size for better visibility Recommended for active operation and a stress-free learning experience. Main Features & Technology High-Precision Real-Time Decoding - Speed range: 5–50 WPM (auto-adjust speed and threshold) - Frequency detection: 400–900 Hz (automatically tracks the strongest signal) Advanced Signal Processing - Bandpass filter: Narrowband filtering reduces unwanted noise - AGC (Automatic Gain Control): Compensates for signal level changes and fading - Noise blanker: Reduces spike noise using MAD (Median Absolute Deviation) - Signal stabilization: Multi-sample buffering helps prevent false detections Designed for Real-World Use - Scrollable text: Review and check missed content - Frequency lock: Tracks the actual operating frequency range (400–900 Hz) - Visual support: On-screen text supports listening and copying Recommended For Morse Code Beginners Great for those getting started with Morse code. Seeing decoded text while listening helps self-correction and improves learning efficiency. Amateur Radio Operators - CW practice: Compare results with your own copying to find weak points - Contests: Helpful for high-speed reception support and log checking - Portable ops: No PC needed—build a CW reception setup with just a smartphone Comeback Hams & Experts Useful for reducing fatigue during long monitoring sessions and supporting operators with hearing decline. Powerful filtering helps decoding in weak-signal or interference conditions. Note: Microphone permission is used only for signal analysis. No audio is saved or transmitted.

About

AeroMetry

Features
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Bring the virtual skies directly to your iOS Home Screen, Lock Screen, and Dynamic Island. Whether you're flying an immersive long-haul or tracking your favourite virtual flights, AeroMetry keeps you plugged into live flight simulation networks without opening a browser. 1. Connect to your favourite online flight simulation network and file your flight plan. 2. Save your VATSIM CID or IVAO ID once in Settings or enter a callsign manually to track any pilot. 3. Activate the live tracker to monitor flight progress, altitude, groundspeed, and telemetry in real-time, right from your Lock Screen and Dynamic Island. Designed natively with Apple's latest WidgetKit and ActivityKit frameworks, AeroMetry offers pixel-perfect telemetry, live progress tracks, and deeply customisable aesthetics, including your own background, text, and progress colours, to perfectly match your iOS device. NETWORK COMPATIBILITY: - Full data integration supporting live pilot and flight tracking on both the VATSIM® and IVAO® networks. - Save your ID for each network you fly on, AeroMetry automatically finds your active flight without typing a callsign, even if you're online on both at once. AeroMetry is an independent passion project. I am dedicated to making this the best possible tool for the flight simulation community! If you run into any issues, notice a bug, or have an idea for a great new feature, please submit your feedback directly via the support link on this page. Your input directly shapes the future of the app. AeroMetry is an independent third-party application. It is not affiliated with, authorised, maintained, sponsored, or officially endorsed by VATSIM Inc., IVAO, or any of their affiliates. All registered trademarks belong to their respective owners.

Screenshots

CW Decoder2 screens
AeroMetry4 screens

Verdict

The call

The clearest difference is in-app purchases: AeroMetry at none against CW Decoder's 1. CW Decoder's advantage is iOS requirement (17.2 vs 26.0). On price, update cadence, ads 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

Both are free to download. CW Decoder sells 1 one-off in-app purchase. AeroMetry asks for nothing beyond the download.

UpkeepUpdate frequency

CW Decoder ships an update weekly, AeroMetry every 6 days. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 4 level
CW Decoder versus AeroMetry: the parameters behind the verdict, then further details
ParameterCW DecoderAeroMetry
PriceFreeFree
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.2 — better26.0
Further details — not scored
Size12 MB6 MB
Age rating4+4+
DeveloperKeiya ChibaALEXANDRU CORNEL CHIREA

In-app purchases

1 purchases

CW Decoder

One-time1
  • Unlock Full Version$2.99
None

AeroMetry

No in-app purchases

Questions

Is CW Decoder free?
CW Decoder is free to download, with in-app purchases available.
Is AeroMetry free?
AeroMetry is free to download, with no in-app purchases.
Do CW Decoder or AeroMetry have ads?
Neither CW Decoder nor AeroMetry shows ads.
Which is updated more often, CW Decoder or AeroMetry?
CW Decoder ships an update weekly, and AeroMetry every 6 days. Most recently, CW Decoder was updated on September 25, 2026 and AeroMetry on September 21, 2026.

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