Every feature, built for the water

Six tabs, offline caching, and smart push alerts — here’s what’s inside the Hatch Chart App.

🪰 Hatches — your home screen

Active Now badge — instantly see what’s hatching today on your water
Month filter — plan trips weeks ahead by checking any month’s activity
Detail view — lifecycle stages with illustrations, recommended hook sizes, entomology education, and field tactics
Fly patterns — every pattern includes stage, hook size, and a full tying recipe

📅 Timeline — the whole season at a glance

A full-year bar chart of every hatch across all 12 months
Surface (dry fly) and subsurface (nymph / emerger) activity shown separately
See where hatches overlap and when the big windows open
Tap any bar to jump straight to that hatch’s detail page

🧰 Fly Box — your patterns, everywhere

Save any pattern from a hatch detail page with one tap
Full details travel with it — stage, hook size, and tying recipe
Stored locally on your device: works at the vise, in the truck, or knee-deep with no signal
Swipe to remove patterns you’ve retired

🌊 Rivers — live conditions before you drive

Live USGS gauges — flow (CFS), gage height, water temperature, and turbidity, updated every 15 minutes
Wading safety ratings — Safe / Use Caution / Limited / Stay Out thresholds set by your organization for each river
Access points — public launches with one-tap Google Maps directions
Trend arrows — see if the river is rising or dropping

📣 Reports — intel from anglers on your water

See what’s hatching right now — which insects, surface or subsurface, and how heavy
Water temperature and clarity included with each report
Submit your own report in under a minute, anonymously if you like
Organization admins can reply to reports with local guidance

🔔 Smart alerts — know before the hatch starts

Subsurface alerts — water temperature enters the nymph-activity window for a hatch
Surface alerts — temperature, season, time of day, cloud cover, and turbidity all line up for dry fly action
Forecast alerts — 72-hour outlook says conditions are coming; plan the day off
Per-alert toggles in Settings — get exactly the notifications you want

Built for places with no bars

Hatch data, fly patterns, and your Fly Box are cached on your device after the first load. The best water rarely has the best cell coverage — the app is designed for exactly that.

Get the App

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