CH16 vs AIS Fleet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CH16
This maritime safety app provides instant access to global rescue coordination centers and features tools for generating distress messages and planning voyages. It offers real-time location tracking for man overboard situations and works offline, ensuring safety at sea.
- Global maritime rescue center directory
- Interactive SRR zone map
- GMDSS-compliant distress message generator
- Man Overboard (MOB) mode with GPS tracking
- Passage Plan for voyage declaration
- Offline functionality
- Multilingual support
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CH16 by Global SAR Hub is the essential maritime safety app for every seafarer. Instantly access contact details for over 350 maritime rescue coordination centers (MRCC, MRSC, JRCC, JRSC) worldwide. View Search and Rescue Regions (SRR) on an interactive map and identify the center responsible for your current position in real time. Generate IMO/GMDSS-compliant MAYDAY and PAN PAN distress messages with audio playback. Activate Man Overboard (MOB) mode to record a GPS position and guide you back to the drop point. NEW - Passage Plan: declare your route and automatically notify all rescue centers along your way, in their own language. An essential step for your safety at sea. Get notifications when you cross into a new SRR zone. Save your vessel and captain information to automatically include them in your messages and passage plans. Available in 6 languages. Works offline. Key features: • Global directory of 350+ maritime rescue centers • Interactive SRR zone map with automatic detection • GMDSS-compliant MAYDAY / PAN PAN message generator • Audio playback of distress messages • Man Overboard mode with GPS tracking and DMD format • Real-time MOB map view • Passage Plan: multilingual voyage declaration to RCCs • Persistent vessel and captain profiles • Voice recording of vessel name • SRR zone change notifications • Multilingual country search • 6 languages: EN, FR, ES, PT, IT, DE • Full offline mode Terms of Use (EULA): https://www.globalsarhub.com/terms-of-use.html Privacy Policy: https://www.globalsarhub.com/privacy-policy.html
AIS Fleet
Track vessels worldwide on a live map, follow specific boats, and receive notifications for departures and arrivals. Connect with other boaters, share photos, and even contribute your own boat's data.
- Live AIS vessel traffic map
- Follow specific boats
- Departure and arrival notifications
- Vessel search and filtering
- Create and subscribe to boat lists
- In-app messaging and photo sharing
- Connect personal AIS receiver
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AIS Fleet lets you watch the boats and ships on the water, from the harbour to the shipping lanes, all over the world’s oceans. If you like, follow the ones that matter to you: a friend’s boat on a circumnavigation, the cruise ship carrying your family, the ferry, the ship you want to photograph or your yacht club’s fleet. You are told when they get under way and when they arrive. You do not need a boat of your own. Watching the map is free and unlimited, following up to five boats is free, and the free plan does not expire. SEE WHAT IS ON THE WATER • Live AIS traffic from the AIS Fleet network of shore stations and contributing boats. • Open any boat for what AIS reports: type, flag, size, speed and course, when she was last heard, and her track. • Search by name, MMSI, call sign or IMO number. • Filter by vessel type, from sailing boats to cargo ships. FOLLOW THE ONES THAT MATTER • Follow any vessel on AIS and tag along on her adventures and journeys. • Departures and arrivals reach you by push notification, by e-mail or in the app. • Make lists to group the boats you follow, and subscribe to lists other members share. FLEETS • Clubs, rallies and associations put their boats on one fleet map with one chat. The organizer adds your boat and you are in at once. MESSAGES AND PHOTOS • Write to the boater behind a boat you follow, to anyone who follows yours, and to your fleet mates. You can block anyone. • Photograph a vessel for the shared catalog, and see the photos others have contributed. DO YOU HAVE A BOAT? • Claim her with her MMSI and a document that shows she is yours. Her followers can write to you, and she can join fleets. • A boat is optional, but it enhances the experience. DO YOU HAVE AN AIS RECEIVER? • Connect an AIS receiver on your boat’s Wi-Fi and the boats it hears join the map within seconds while the app is on screen. What it hears is contributed to AIS Fleet, which is how there is coverage where no shore station reaches. • A receiver is optional; it enriches the experience but is never required. Terms of Use: https://aisfleet.com/terms/ Privacy Policy: https://aisfleet.com/privacy/
Screenshots
Verdict
The clearest difference is ads: AIS Fleet at none against CH16's shown. AIS Fleet also leads on monetization model (free vs free with in-app purchases) and update cadence (every 3 weeks vs every 2 months). CH16's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, review sentiment and in-app purchases 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. CH16 sells 2 in-app purchases, starting at $0.99 per month and AIS Fleet sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
CH16 ships an update every 2 months, AIS Fleet every 3 weeks. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.
| Parameter | CH16 | AIS Fleet |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 80 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Global SAR Hub | Saillogger |
Customer experience
CH16
AIS Fleet
In-app purchases
CH16
- CH16 Pro7 Days trial$0.991 Month
- CH16 Pro Lifetime$4.99
AIS Fleet
- AIS Fleet Plus$1.991 Month
- AIS Fleet Pro$4.991 Month









