Observed arrival · 2026-09-15

FinCaliber Rocket: a rocket-stability bench

fincaliberrocket.space Observed source

Editorial interest 81/100 Selection signal · not a rating of the site

An offline Android tool for stacking sport-model rocket components, calculating CP and CG, checking caliber bands, and producing shareable build cards.

Landing page captured for the 2026-09-15 issue.

Field notes

The described workflow combines a component stack, mass budget, selected motor, and live CP/CG drawing rather than presenting a generic rocket calculator. Its starter fleet contains fourteen named airframes, while the offline motor library lists sixteen seed designations and supports custom motor cards. The page also specifies local Room and DataStore storage, 40-step undo/redo, and A4-style PDF or 1080×1600 PNG build-card output.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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