# Hatch Window — Fly Fishing Conditions & Log

> Fly Fishing Conditions & Log (iPhone/iPad app by Baker Ventures LLC.)

- Source: https://appshunter.io/ios/app/hatch-window/id6816322811 (this page in markdown: same URL + `.md`)
- Developer: [Baker Ventures LLC](https://appshunter.io/developer/6784050953)
- Category: Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 35 MB
- Languages: American English
- Released: 2026-10-15
- Data updated: 2026-10-18

## What is Hatch Window?

Hatch Window is a fly-fishing companion for deciding where to go, when to go, and what to tie on — built to run entirely on your phone.

WHERE TO GO
A curated starter list of well-known trout waters, plus any spots you add yourself. Everything is saved on-device.

CONDITIONS, NOT GUESSES
Live streamflow (cfs) and gauge height for each spot, pulled from the USGS Water Services API. If a gauge has no data, is offline, or the network fails, Hatch Window says so — it never shows a made-up number.

BEST TIMES TO FISH
Sunrise, sunset, civil twilight, and solunar major/minor feeding windows, computed on your device from standard astronomical formulas. Solunar theory is a traditional angling heuristic, and the app says so — no overclaiming.

PLAN AHEAD
A 7-day outlook per spot ranks the coming days by their best solunar window, so you can pick your day instead of only checking today.

ALL YOUR SPOTS AT A GLANCE
A dashboard shows every saved spot's live conditions in one view, sorted by a plain "fishing well right now" heuristic — fresh, steady flow first.

WHAT TO TIE ON
A hatch chart matches insect activity to fly patterns by month, water type, and region — covering Western, Northeast, Midwest, and Southern trout water, not just one corner of the country.

YOUR CATCH LOG
Log the date, spot, flies, conditions, and notes for every outing. It stays on your device, survives app updates, and builds a "what worked here before" view for each spot — plus a one-tap shareable outing report.

PRIVACY
No account, no login, no ads, no tracking. Hatch Window talks to exactly two free public data services — USGS Water Services for stream conditions and Open-Meteo for weather — and nothing else. Your catch log and spot list never leave your device. Full privacy policy is in the app.

Hatch Window is a v1 built by one angler who wanted these five things in one place instead of five different tabs. More coverage and features are on the way.

## Is Hatch Window safe?

Not enough ratings yet to assess Hatch Window.

## Is Hatch Window legit?

Hatch Window appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Hatch Window is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-15

No release notes.

## More apps by Baker Ventures LLC

- [FlirtGym: Rizz & Dating Help](https://appshunter.io/ios/app/flirtgym-rizz-and-dating-help/id6784050951)
- [Vocabdrift: Vocabulary Builder](https://appshunter.io/ios/app/vocabdrift-vocabulary-builder/id6816214136)
- [MoveWitness: Rental Inspection](https://appshunter.io/ios/app/movewitness-rental-inspection/id6816228166)
- [FlipStage: Present Two-Sided](https://appshunter.io/ios/app/flipstage-present-two-sided/id6816274152)

All apps by Baker Ventures LLC: https://appshunter.io/developer/6784050953

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-18.*