TZ First Mate vs Fish Mapping
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TZ First Mate
Easily log fishing catches and photos directly from your phone while on the water. Data syncs wirelessly to your compatible Furuno MFD and backs up to the cloud. Access MFD system details and report issues.
- Create catches and photos
- Wireless synchronization to MFDs
- Cloud backup of user objects
- View MFD system details
- Report issues via log
Read full descriptionHide full description
The Furuno TZ First Mate mobile App allows you to quickly create Catches and Photos while you are boating or fishing. These objects are then automatically synchronized with your NavNet TZtouch2 and NavNet TZtouch3 when your phone is connected to the MFD’s Wireless Hotspot. As soon as your phone has access to the internet the TZ First Mate App will also synchronize and backup all contents of the user objects database (Catches, Photos, Marks, Routes and Boundaries) to the TZ Cloud (cloud.mytimezero.com). Lastly, TZ First Mate can be used to get MFD details such as System ID, Software Versions, and report issues via a Report Log.
Fish Mapping
This app provides detailed fishing recommendations and environmental data to help anglers find the best spots for bait and game fish. It displays information like plankton strength, sea surface temperature, and ocean currents to optimize fishing trips.
- Fishing Recommendations
- Weed Lines
- Plankton Front Strength
- Sea Surface Temperature
- Sub-Surface Temperatures
- Sea Surface Height Anomalies
- Ocean Currents
Read full descriptionHide full description
Let SiriusXM Marine Fish Mapping help save time and fuel by showing you the spots where conditions are best for bait fish to gather and where game fish are most likely to hunt. The Fish Mapping App is included with your SiriusXM Marine Fish Mapping subscription. With the Fish Mapping App, anglers can view the following features on their phone or tablet: • Fishing Recommendations • Weed Lines • Plankton Front Strength & Contours • Sea Surface Temperature Front Strength & Contours • 30m Sub-Surface Temperatures • Sea Surface Height Anomalies • Ocean Currents • Historical Data Note: SiriusXM Marine weather features are not available on the Fish Mapping App. Download the Fish Mapping App now and start using it on your smartphone or tablet to help plan your next fishing trip! App requires internet access. Not a Fish Mapping subscriber? Learn more at siriusxm.com/fishmapping. -------------------------- The Fish Mapping App is only available with your Fish Mapping subscription and subscriptions require a compatible satellite-enabled device. The Fish Mapping App is not sold separately. Access to the app may take up to 24 hours from subscription activation to process and access is limited to 2 devices. Internet access is required for the Fish Mapping App. Data rates may apply. Subscription and service fees, content, and features are subject to change. IMPORTANT INFORMATION: Not all devices are capable of receiving all services offered by SiriusXM. Current information and features may not be available in all locations, or on all receivers. Data displays vary by device; images are representative only. SiriusXM services may include weather and other content and emergency alert information. Such information and data is not for “safety for life,” but is merely supplemental and advisory in nature, and therefore cannot be relied upon as safety critical in connection with any aircraft, seacraft, automobile, or any other usage. SiriusXM is not responsible for any errors or inaccuracies in the data services or their use. See Fish Mapping coverage area at siriusxm.com/marine/coverage-map. SiriusXM Privacy Policy: www.siriusxm.com/privacy Your Privacy Choices: www.siriusxm.com/yourprivacychoices SiriusXM Customer Agreement: www.siriusxm.com/customeragreement
Screenshots
Verdict
The clearest difference is review sentiment: TZ First Mate at 100% against Fish Mapping's 50%. TZ First Mate also leads on rating (5.0 vs 3.7) and monetization model (free vs subscription). Fish Mapping's advantage is update cadence (every 3 weeks vs every 3 months). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
TZ First Mate holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 100% of TZ First Mate's written reviews are positive against 50% of Fish Mapping's.
TZ First Mate ships an update every 3 months, Fish Mapping every 3 weeks. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.
| Parameter | TZ First Mate | Fish Mapping |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 70 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | 株式会社フルノソフテック | OceanBytes Holding LLC |
Customer experience
TZ First Mate
Fish Mapping
In-app purchases
TZ First Mate
No in-app purchases
Fish Mapping
No in-app purchases









