Comparison

Fish Mapping vs On My Marks

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

Head to head
About

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.

Highlights
  • Fishing Recommendations
  • Weed Lines
  • Plankton Front Strength
  • Sea Surface Temperature
  • Sub-Surface Temperatures
  • Sea Surface Height Anomalies
  • Ocean Currents
Features
Read 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

About

On My Marks

Organize and manage your GPS waypoints from various devices and software. Easily import, edit, merge, and export your marks to declutter and streamline your navigation data for fishing, boating, diving, and outdoor exploration.

Highlights
  • Import GPS waypoints
  • Edit waypoint data
  • Merge duplicate waypoints
  • Export waypoint data
  • Supports Garmin Active Captain
  • Supports Simrad, C-Map, Lowrance
Features
Read full description

On My Marks – The Ultimate GPS Waypoint Manager for Garmin Active Captain, Simrad, C-Map, Lowrance and more. Take control of your GPS waypoints like never before. Whether you’re a fisherman, boater, diver, or outdoor explorer, On My Marks helps you clean up clutter, eliminate duplicates, and organize all your waypoints from Garmin or other GPS software—fast. Built for simplicity and speed, On My Marks lets you import, edit, merge, and export waypoint data in minutes, not hours. What Users Are Saying: “I deleted over 1,000 duplicates in minutes. This app is worth every penny.” – Sheila D. “Finally, an easy way to manage Garmin waypoints!” – Clay J. “Super fast and intuitive. I use it before every fishing trip.” – Joe F. Ready to clean up your GPS waypoints? Download On My Marks now and get organized in minutes. Import, edit, and export your GPS marks—stress-free. Secure. Cross-platform. Built for real-world adventures. Review the Terms of Use (EULA) at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fish Mapping3 screens
On My Marks4 screens

Verdict

The call

The clearest difference is review sentiment: On My Marks at 100% against Fish Mapping's 50%. On My Marks also leads on rating (5.0 vs 3.7). Fish Mapping's advantage is in-app purchases (none vs 1) and iOS requirement (13.4 vs 17.6). On price, ratings volume, update cadence and ads 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

Both are free to download. On My Marks sells 1 in-app purchase, starting at $49.99 per year. Fish Mapping asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On My Marks holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 50% of Fish Mapping's written reviews are positive against 100% of On My Marks's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

Scorecard5 real differences · 5 level
Fish Mapping versus On My Marks: the parameters behind the verdict, then further details
ParameterFish MappingOn My Marks
PriceFreeFree
Rating3.7 (3 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings3 — better2
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.4 — better17.6
Further details — not scored
Size57 MB73 MB
Age rating4+4+
DeveloperOceanBytes Holding LLCOn My Marks, LLC

Customer experience

Fish Mapping

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

On My Marks

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Fish Mapping

No in-app purchases

1 purchases

On My Marks

Subscriptions1
  • Yearly Subscription$49.991 Year

Questions

Is Fish Mapping free?
Fish Mapping is free to download, with no in-app purchases.
Is On My Marks free?
On My Marks is free to download, with in-app purchases available.
Which has better reviews, Fish Mapping or On My Marks?
On My Marks is rated higher. Fish Mapping averages 3.7 out of 5 from 3 ratings, while On My Marks averages 5.0 from 2 ratings.
Do Fish Mapping or On My Marks have ads?
Neither Fish Mapping nor On My Marks shows ads.
Which is updated more often, Fish Mapping or On My Marks?
Fish Mapping ships an update every 3 weeks, and On My Marks every 3 weeks. Most recently, Fish Mapping was updated on September 9, 2026 and On My Marks on September 13, 2026.

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