Radio Messenger vs UTC Face
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Off-grid messaging
- APRS messaging
- Enhanced messaging
- Location sharing
- Offline maps
- File and image sharing
- Identity verification
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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/
UTC Face
Display city times and UTC offsets on your Apple Watch face with large, readable text. Manage your city list on your iPhone, with offline support for 50 built-in cities and online search for others. Automatic daylight saving updates ensure accuracy.
- Large, readable city times on watch face
- Displays city code and UTC offset
- Supports large rectangular complication slots
- Manage city list via iPhone app
- Offline support for 50 built-in cities
- Automatic daylight saving updates
- No ads, analytics, or accounts
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UTC Face: World Clock puts a city's time on your Apple Watch face in type large enough to read at a glance. The built-in world clock complication is small. This one uses the whole slot: the city's three-letter code, its UTC offset, and the time — in the same large, rounded, monospaced face as your watch's own clock. HOW IT WORKS • Edit your watch face and add UTC Face to a large rectangular complication slot — Modular Duo, Modular, Infograph Modular, or any face with one. • Tap the slot again to choose which city it shows. • Put a second one in the other slot for a different city. YOUR CITY LIST • Manage your cities in the iPhone app: add, remove, reorder. • Changes sync to your watch automatically. • 50 built-in cities covering every major time zone, available offline. • Unlimited online search for anywhere else. • UTC is always there. ACCURATE • Updates on the minute, aligned to the minute boundary — no drift. • Daylight saving changes are handled automatically for every city. PRIVATE • No accounts, no analytics, no ads. • Your city list stays on your devices. There is no server. Requires iOS 26 and watchOS 26.
Screenshots
Verdict
The clearest difference is price: Radio Messenger at Free against UTC Face's $0.99. Radio Messenger also leads on ratings volume (13 vs 1) and iOS requirement (18.6 vs 26.0). UTC Face's advantage is in-app purchases (none vs 2) and update cadence (every 6 days vs every 3 weeks). On rating, review sentiment, 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
Radio Messenger is free to download; UTC Face costs $0.99 up front. Radio Messenger sells 2 in-app purchases, starting at $1.99 per month. UTC Face asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Radio Messenger against 5.0 for UTC Face. That said, the two scores are not equally well evidenced: Radio Messenger has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Radio Messenger ships an update every 3 weeks, UTC Face every 6 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.
| Parameter | Radio Messenger | UTC Face |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (13 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 18.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 39 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Island Magic Co. | Ibrahim Poyraz |
Customer experience
Radio Messenger
UTC Face
In-app purchases
Radio Messenger
- Radio Messenger Plus Monthly$1.991 Month
- Radio Messenger Plus Yearly1 Year trial$14.991 Year
UTC Face
No in-app purchases









