Frost Cloud

Name the sky with confidence. Frost Cloud is a premium offline-first meteorology identification studio for earth-science students, museum weather galleries, ground-school beginners, and curious sky-watchers.

It is not a live forecast client, not a sky diary, and not a camera classifier. The core loop is WMO cloud-genus recognition, height-layer decision trees, and short synoptic scenario drills powered by a seeded atlas.

SEEDED WMO ATLAS
Browse 27 cloud genera and species cards with Latin names, etage altitude bands, precipitation tells, and side-by-side look-alike callouts. Every card is available with no network.

FOUR-STEP IDENTIFIER
Step through etage, form, edge sharpness, and fallstreaks. The wizard ranks likely genera and explains why confusable pairs are rejected, so you learn the difference rather than memorize a label.

SYNOPTIC SCENARIO WORKSHOP
Work through 18 cartoon front and pressure setups. Choose the expected cloud sequence for a warm front, a cold front, and convective afternoons.

OPTICAL PHENOMENA
Drill halo, sundog, corona, irisation, crepuscular rays, and pileus caps with simple geometry explainer cards.

CEILING, VISIBILITY, AND STABILITY
Classroom briefs translate cloud-base language into educational category labels without operational go/no-go advice. Rearrange inversion and lapse cartoon layers in the stability stack studio and watch which genera become likely.

QUIZZES WITH RATIONALE
Take 60-second, 90-second, or untimed identification quizzes on seeded sky plates. Get an immediate rationale and a missed look-alikes review queue.

OFFLINE BY DESIGN
Study decks, bookmarks, and quiz preferences persist on device so classrooms work with no network. A glance cloud-of-the-day widget and a daily 60-second identification reminder open the matching atlas card.

DUSK-SAFE READING
Red-safe dusk reading theme, large-type atlas layout, and screen-reader labels across nine surfaces: Today, Atlas, Cloud detail, Identifier, Scenarios, Optics, Quiz play, Results, and Settings.

Name genus, etage, look-alikes, and what the structure implies, using offline atlas cards and drills instead of a forecast feed or a blank notebook.