ScaleScience: Fishing Logbook
Catch Weight Calculator & Map
Free · In‑App Purchases
Caught a fish? Enter length and girth to get an accurate weight in seconds. 100+ freshwater and saltwater species. Save your catches with GPS, photos, and notes.
ScaleScience is a fish weight calculator and digital catch log built for anglers who want accurate weight estimates on the water. Enter a length measurement, select your species, and get an instant weight estimate. Built by a fisherman for fishermen, the app lets you save and store catch info — including species, length, girth, photos, and location. Then you can seamlessly share your stats with your fishing buddies or keep it all to yourself. Fish smarter, brag better.
Key features:
- 100+ species covering tuna, bass, trout, salmon, billfish, grouper, snapper, jacks, and more. Don't see what you want? Request it
- For fisherman practicing catch and release or the one that just wants to brag, a length measurement can be used to estimate fish weight
- Save every catch in your own Cloud Synced digital log book with all of the details
- Interactive catch map to visualize where you fish and save your favorite fishing spots
- Contribute anonymized catch data to marine science research + the more you catch and contribute the more accurate our estimates are
- Offline access for premium subscribers
Create a free account to sync your catches to the cloud and access them from the ScaleScience web app at scalescience.net.
Optional subscriptions unlock additional features:
Basic ($0.99/mo): Ad-free experience, interactive catch map, fishing spots, 14-day offline access
Coming in future versions:
- Pro ($2.99/mo)
- Ultimate ($4.99/mo)
Want to request a feature? Email us at: scalesciences@gmail.com
Privacy Policy: https://www.scalescience.net/privacy
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
The developer, BFT LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BFT LLC
- Size
- 35.8 MB
- Category
- Sports
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 or later. - iPad
Requires iPadOS 17 or later. - Mac
Requires macOS 14.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Basic Annual $9.99
- Basic Monthly $0.99
- Copyright
- © BFT LLC
