Best Marlin Apps

242+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated October 2026

Out of 242+ marlin apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Marlin Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Merlin Bird ID by Cornell LabMerlin Bird ID by Cornell LabFree4.9★ (114K)NoNoNov 2026
2MarlinMarlinFree—NoNoSep 2026
3MarlinMarlinFree—NoNoOct 2026
4Platysens MarlinPlatysens MarlinFree5.0★ (3)NoNoSep 2026
5Marlin: Ultimate Fishing AppMarlin: Ultimate Fishing AppFree4.0★ (9)YesYesOct 2026
6MARLIN - Jeju Diving & TravelMARLIN - Jeju Diving & TravelFree—NoNoOct 2026
7MarlinMarlinFree——NoMay 2026
8Marlin Controls Stellar BLEMarlin Controls Stellar BLEFree—NoNoMay 2026

Top Picks for Marlin

Merlin Bird ID by Cornell Lab#1

Merlin Bird ID by Cornell Lab by Cornell University

Identify Birds You See & Hear
Editor's Choice
🔍 Reference
4.9😊(114K ratings)
Free
#35in Reference
Merlin Bird ID by Cornell Lab screenshot 1
Merlin Bird ID by Cornell Lab screenshot 2
Merlin Bird ID by Cornell Lab screenshot 3
Merlin Bird ID by Cornell Lab screenshot 4
Merlin Bird ID by Cornell Lab screenshot 5
Merlin Bird ID by Cornell Lab screenshot 6

Instantly identify birds by sight or sound. This app uses advanced machine learning and a vast database of bird sightings, sounds, and photos to help you discover and learn about avian species worldwide. Track your sightings and explore birds in your region.

What We Love

  • 🚀 Helpful for bird identification
  • 🔒 Accurate bird identification
  • 👍 Easy to use
  • 👍 Useful for beginners and experts
  • 👍 Enjoyable and fun to use
  • 👍 Comprehensive bird information
  • 👍 Excellent sound identification feature
  • 👍 Connects with eBird
  • 👍 Free app with no ads

Room to Improve

  • 🐛 Sound ID not always accurate
  • 🐛 Occasional crashes or bugs
  • 🐛 Difficulty adding birds to life list
  • 🐛 Limited bird packs for certain regions
  • 🐛 Requires location access
  • 🐛 High battery consumption
  • 🐛 Confusing user interface in some areas

More Marlin apps to explore

FAQ about Marlin

What are the best marlin apps for iPhone?
Merlin Bird ID by Cornell Lab tops our marlin apps ranking as of October 2026, with a 4.9-star average from 114K App Store ratings, and it's free to download.
Yes — 20 of the top marlin apps we rank are free to download, including Merlin Bird ID by Cornell Lab and Marlin.
Merlin Bird ID by Cornell Lab has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 242+ marlin apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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