TZ iBoat vs OceanFishMap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TZ iBoat
Navigate the seas with advanced marine charts, GPS, and AIS data, even offline. This app offers detailed bathymetry, community-contributed map data, and dynamic features for safe boating, sailing, and fishing.
- Offline marine charts
- GPS and route planning
- AIS Online tracking
- Community map contributions
- Dynamic mooring and lighting
- Advanced fishing tools
- Tides and tidal currents
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Your next-generation chartplotter. Navigate with the world’s #1 marine charts app for coastal boating, sailing, and fishing. Marine GPS, nautical charts, AIS Online, tides & tidal currents, anchoring, marine weather, radar, sounder, and NMEA data — everything you need for safer navigation at sea. Built for sailors, boaters, and fishermen who need reliable navigation anywhere, online or offline. THE SMARTEST AND CLEAREST NAVIGATION INTERFACE AT SEA A cutting-edge interface makes navigation clearer and faster: • TZ Bar: quick access to key features • Dedicated screens: Weather, Fishing, NavData, Logbook, Mooring, Tides, Sounder • Cleaner chart view, easier to read • Customizable interface for faster access • Modern design focused on readability WHAT YOU CAN DO WITH TZ iBoat • Navigate with marine GPS and nautical charts • Monitor AIS targets locally and globally • Plan routes and anchor safely • Access tides, currents, and weather forecasts • Fish smarter using oceanographic data FOR SAILORS & BOATERS – Navigate safely • TZ MAPS: vector, raster, satellite, and bathymetry charts • SMART SEARCH: find marinas, buoys, tide stations, routes • DYNAMIC LIGHTS: real-time light sectors • DYNAMIC MOORINGS: wind-aware anchorage • Precise GPS for coastal navigation AIS & SAFETY – Stay aware beyond your horizon • AIS ONLINE: global AIS targets via internet (Essential plan) • Share AIS data with the community • Radar and onboard instrument integration • Real-time traffic awareness for safer navigation FOR FISHERMEN – Gain the edge Turn ocean data into real fishing results: • Identify productive zones using SST, chlorophyll, currents, altimetry (Elite plan) • Spot fish-holding conditions faster • BATHYVISION: high-resolution bathymetry with contour lines • Target high-potential areas with precision • EVENT & CATCH: log and analyze catches on nautical charts WEATHER – Clearer and more useful • Dedicated Weather screen • Real-time forecasts and offline access • Rain Radar with lightning data • High-resolution models available in Premium plan • Iridium GO! compatibility CONNECTIVITY & PRECISION • NMEA connectivity: manage and prioritize data sources • Connect AIS, radar, autopilot, and instruments • Latitude/longitude keyboard optimized for use at sea • Easy coordinate entry with multiple formats COMMUNITY & ECOSYSTEM • COMMUNITY MAPS: share local knowledge (hazards, POIs, marinas) • Contribute and improve charts • Trusted by 500,000+ boaters worldwide SUBSCRIPTION PLANS Choose the plan that fits your needs: • Essential: AIS Online, onboard instruments, autopilot integration via Wi-Fi NMEA • Premium: Essential + high-resolution forecasts, Rain Radar, multiple models, comparison • Elite: Premium + ocean layers (SST, Chlorophyll, SSH, Currents). Monthly and annual plans available, with savings on yearly options. Core features remain available for free. CHARTS AND DATA PLANS SUBSCRIPTIONS: The payment will be debited from the Apple account once the purchase is confirmed. The subscriptions and automatic renewals can be managed by entering the account settings after making the purchase. Any unused part of a free trial period, if offered, will be lost when a subscription is purchased. Terms of use: https://mytimezero.com/eula/ Privacy policy: https://mytimezero.com/privacy-statement/
OceanFishMap
This app provides fishing boats with oceanographic data and expert recommendations to optimize fishing operations. It allows users to record and share catch information, view vessel positions on a map, and send emergency messages.
- Oceanographic data updates
- Expert fishing recommendations
- Offline data viewing
- Vessel position on map
- Catch reporting and sharing
- Emergency messaging
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OceanBytes provides fishing boats Oceanographic data including fishing recommendations created by expert Oceanographers that helps the boats save time and fuel. The app also allows the boats to record and share catch information in addition to the ability to send SOS and emergency messages. With OceanBytes you can: Get daily updates of Sea Surface Temperature, Plankton, Sea Surface Height Anomaly and Surface Currents. Get updated Fishing Recommendations twice a week. Download and View the data offline. See your vessel position on the map to find good fishing locations near you. View course and distance to a location from your vessel. Create fish catch reports for different species and share it. Send different types of emergency messages. Make your fishing operations more efficient with OceanBytes. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: OceanFishMap at 5.0 against TZ iBoat's 4.6. TZ iBoat's advantage is ratings volume (875 vs 1) and chart position (#70 vs unranked). On price, update cadence, ads 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. TZ iBoat sells 13 in-app purchases, starting at $2.99 per month and OceanFishMap sells 4 in-app purchases, starting at $100.00 per month. Whichever you choose, the download price is not the number that matters.
OceanFishMap holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: TZ iBoat has 875 ratings behind it against 1, so its average is the more settled of the two.
TZ iBoat ships an update every 8 days, OceanFishMap fortnightly. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.
| Parameter | TZ iBoat | OceanFishMap |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (875 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 79.5% of reviews | — |
| Number of ratings | 875 — better | 1 |
| Update frequency | Every 8 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #70 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.2 | 13.4 — better |
| Further details — not scored | ||
| Size | 427 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Nobeltec, Inc. | OceanBytes Holding LLC |
Customer experience
TZ iBoat
OceanFishMap
Bugs and requests
TZ iBoat
Reported bugs
3 issues- GPS position not updating reliably while moving
- Radar overlay not functioning properly
- Compatibility issues with older devices or iOS versions
Requested features
5 requests- Automatic routing and trip planning
- Improved satellite imagery and overlays
- Better integration with other marine electronics
- More customization options for data displays
- Ability to mirror camera feeds as a rear-view
OceanFishMap
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TZ iBoat
- Essential Subscription$2.991 Month
- Premium Subscription$9.991 Month
- Great Lakes7 Days trial$19.991 Year
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- Canada East and North7 Days trial$19.991 Year
- Canada West7 Days trial$19.991 Year
- USA7 Days trial$19.991 Year
- Bahamas7 Days trial$30.991 Year
- Central America & Caribbean7 Days trial$30.991 Year
- Elite Subscription$39.991 Month
- Western Mediterranean7 Days trial$40.991 Year
- Eastern Mediterranean7 Days trial$61.991 Year
- AIS module$8.99
- Radar module$49.99
OceanFishMap
- Coastal7 Days trial$100.001 Month
- Coastal + AIS$149.001 Month
- Pro7 Days trial$200.001 Month
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- Pro + AIS$249.001 Month









