ScaleScience: Fishing Logbook

ScaleScience: Fishing Logbook

Fish Weight & Catch Logbook

7 ratings
7 reviews
Free
In-App Purchases

Details

Released
October 21, 2025
Updated
April 10, 2026

Features

ScaleScience: Fishing Logbook video #1 for iPhone
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ScaleScience: Fishing Logbook screenshot #10 for iPhone
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ScaleScience: Fishing Logbook screenshot #12 for iPhone
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About

Estimate fish weights with a length measurement and species selection. Log your catches with details like photos and location, and share them with friends. Contribute data to marine science research for more accurate estimates.

✓Instant fish weight estimates
✓Log catches with photos and location
✓Cloud-synced digital logbook
✓Interactive catch map
✓Contribute to marine science research
✓Offline access for premium subscribers
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What's New in ScaleScience

1.3

April 10, 2026

New in V1.3.0: - Native Apple Sign In — sign in with your Apple ID for fast, private account creation - Native Google Sign In — sign in with your Google account for seamless access - Bug fixes and performance improvements

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Subscriptions & In-App Purchases

Basic Monthly

Monthly basic access

$0.991 Month
7 Days trial
How to cancel ScaleScience subscription ⁉️

User reviews

Good so far

Good app so far but need to see what comes in future versions. Worth a download.

Best I’ve Tried

So far this is the best catch log app I’ve tried. Simple and very intuitive. The weight estimates are a great feature. Will consider trying a subscription for the catch/spot map.

Game changer for offshore fishing

If you want to keep you catch log organized and brag to your friends this app is for you. Excited to see what they do with future versions. Loving the ability to use it offline when out at the canyons.

Blown Away

I stumbled across this app in preparation for a fishing trip, and man I’m glad that I did. This is such a cool idea and seemingly very accurate. I brought this with me on my fishing trip in the Caribbean and was able to use Scalescience to identity and approximate the weight of a Black Tip Shark we caught. I would have thought it was around 300 pounds, but Scalescience helped me realize it was closer to 500! Makes for a much better, and more accurate, story to share with friends and family. This tool will be a staple in all of my fishing trips moving forward!
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Surprisingly Accurate

Tested this against my scale and was very accurate. Definitely recommend giving it a try.

FAQ

How does ScaleScience estimate fish weight?

ScaleScience estimates fish weight by using a length measurement and selecting the specific fish species. The app utilizes a database of species information to provide an accurate weight estimate on the water.

What information can I log with ScaleScience?

You can log detailed information for each catch, including species, length, girth, photos, and the exact location. This data is stored in a cloud-synced digital logbook for easy access and organization.

Can I use ScaleScience offline?

Yes, offline access is available for premium subscribers. This allows you to log and estimate fish weights even when you don't have an internet connection.

What are the subscription options for ScaleScience?

ScaleScience offers a Basic subscription for $0.99/month or $9.99/year, which includes an ad-free experience, interactive catch map, fishing spots, and 14-day offline access. Pro and Ultimate tiers with additional features are planned for future releases.

Does ScaleScience have ads?

The free version of ScaleScience contains advertisements. Subscribing to the Basic plan removes ads and provides additional features.

How does ScaleScience contribute to marine science?

By contributing your anonymized catch data, you help improve the accuracy of the app's weight estimates and support marine science research. The more users contribute, the more precise the estimations become.

What devices is ScaleScience available on?

ScaleScience is available on Mac, iPhone, and iPad, allowing you to manage your fishing logs across multiple Apple devices.

How often is ScaleScience updated?

The app was last updated on March 3, 2026, with version 1.2. This indicates a commitment to ongoing development and feature additions.