Comparison

Radio Messenger vs DitDah Decoder

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

Head to head
About

Radio Messenger

Communicate off-grid using amateur radio frequencies. Send messages, files, photos, and locations without cellular service. Supports APRS and enhanced direct messaging modes.

Highlights
  • Off-grid messaging
  • APRS messaging
  • Enhanced messaging
  • Location sharing
  • Offline maps
  • File and image sharing
  • Identity verification
Features
Read full description

Send messages, files, photos, and locations over amateur radio using your iPhone or iPad. Radio Messenger brings modern conversation to packet radio. Whether you are using APRS or experimenting on a local frequency, the app is built around messaging first, not beacons and maps. Use Radio Messenger with supported Bluetooth radios, KISS TNCs, or integrated modem with an audio adapter to stay connected when cell coverage is unavailable or simply not the point. Two messaging modes. One app. APRS Messaging Works with the existing APRS ecosystem. Send messages with acknowledgements, retries, delivery tracking, and optional Message Continuity tap into store and forward and internet delivery to help messages reach you even when you are away from the radio. Enhanced Messaging A modern radio-only messaging mode for direct conversations. Includes verifiable identity, delivery acknowledgements, read receipts, reactions, and support for longer messages. Features • Messaging focused Conversations, contacts, and multi-device sync designed to feel familiar and easy to use. • Location sharing Share your location or drop a labeled pin directly in a conversation. No automatic beaconing. You choose when and what to share. • Offline maps Maps are cached automatically so shared locations remain visible when you are off-grid. • Presence & On Air See who is active and recently heard. Share a short status and emoji so others know you are around. • File & image sharing Send photos and documents in Enhanced Messaging conversations. Recipients can accept or decline transfers. • Identity & verification Verify who sent a message and manage trusted identities for more confident communication. • Search & inbox tools Find conversations by name, callsign, or message content. Pin threads, mute alerts, and manage your inbox with ease. • Radio native Built for Bluetooth radios and external TNCs, with frequency control available on supported hardware. Radio Messenger is designed for licensed amateur radio operators and requires compatible radio. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

DitDah Decoder

Features
Read full description

DitDah Decoder is a professional-grade Morse code communication tool designed for amateur radio operators and CW enthusiasts. Using advanced technology, it decodes Morse code from audio in real-time and lets you send messages back. DECODE MORSE CODE • Real-time audio decoding from your microphone or use an external adapter to receive directly from your radio • Q-code and abbreviation translation • Saves audio recordings of your decoding sessions • Autocorrect button for reprocessing of saved audio files using neural networks SEND MORSE CODE • Type messages and transmit as Morse code audio • Adjustable frequency and speed (WPM) • Repeat send mode for calling CQ • Use an external adapter to transmit directly via your radio • Two people using the app can easily send messages back and forth on the air COMPLETE LOGBOOK • Automatic call sign detection with country lookup • Organized by date and call sign • Tap on any call sign to see stats • QSO tracking and confirmation • Adif export Whether you're a licensed amateur radio operator working CW on the bands or learning Morse code, DitDah Decoder provides the tools you need for two-way Morse communication.

Screenshots

Radio Messenger4 screens
DitDah Decoder4 screens

Verdict

The call

The clearest difference is price: Radio Messenger at Free against DitDah Decoder's $19.99. DitDah Decoder's advantage is in-app purchases (none vs 2). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Radio Messenger is free to download; DitDah Decoder costs $19.99 up front. Radio Messenger sells 2 in-app purchases, starting at $1.99 per month. DitDah Decoder asks for nothing beyond the download.

UpkeepUpdate frequency

Radio Messenger ships an update every 3 weeks, DitDah Decoder monthly. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Radio Messenger versus DitDah Decoder: the parameters behind the verdict, then further details
ParameterRadio MessengerDitDah Decoder
PriceFree — better$19.99
Rating5.0 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.618.4 — better
Further details — not scored
Size39 MB29 MB
Age rating4+4+
DeveloperIsland Magic Co.Timothy Diehl

In-app purchases

2 purchases

Radio Messenger

Subscriptions2
  • Radio Messenger Plus Monthly$1.991 Month
  • Radio Messenger Plus Yearly1 Year trial$14.991 Year
None

DitDah Decoder

No in-app purchases

Questions

Is Radio Messenger free?
Radio Messenger is free to download, with in-app purchases available.
Is DitDah Decoder free?
DitDah Decoder costs $19.99, with no in-app purchases.
Do Radio Messenger or DitDah Decoder have ads?
Neither Radio Messenger nor DitDah Decoder shows ads.
Which is updated more often, Radio Messenger or DitDah Decoder?
Radio Messenger ships an update every 3 weeks, and DitDah Decoder monthly. Most recently, Radio Messenger was updated on October 7, 2026 and DitDah Decoder on October 2, 2026.

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