BightSize
Knot library, quiz & practice
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Now with a full knot quiz, practice tracker, daily knot, favorites, and over 90 step-by-step knots across boating, climbing, fishing, camping and more.
Tie better knots. Anywhere. Anytime.
BightSize is a pocket-sized knot handbook that turns reading into doing. Whether you're rigging a boat, setting an anchor, fishing a leader, pitching a tarp, or just tying down a kayak, BightSize gives you clear step-by-step instructions and the practice tools to actually remember them.
Over 90 knots, organized for real life
Browse curated categories built around how people actually use rope:
• Boating — bowlines, cleat hitches, anchor bends
• Climbing — figure eights, prusiks, autoblocks
• Fishing — improved clinch, Palomar, FG knot
• Camping & Scouting — taut-line, trucker's hitch, lashings
• Survival & Rescue — rescue loops, tensionless hitches, Z-drags
• Rigging & Work — scaffold, icicle hitch, lineman's loop
• Everyday & Decorative — square knot, monkey's fist, paracord weaves
Designed to help you learn, not just look things up
• Step-by-step instructions for every knot, broken into clear numbered actions
• A 10-question quiz with per-category best scores to test what you actually know
• Practice tracker with daily streaks — log a knot every time you tie it
• Daily "knot of the day" so you're always learning something new
• Favorites and recently viewed knots for quick access in the field
• Fast search across the entire library
Built for the real world
• Works completely offline — no signal needed on the trail, on the water, or at the crag
• No account, no sign-up, nothing to set up
• No ads, no tracking, no analytics
• All your data, favorites, practice log, quiz scores stays on your device
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The developer, BILAL HAJJI, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BILAL HAJJI
- Size
- 3.5 MB
- Category
- Sports
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © @bightsize2026