Sprockline: Drive Design

Sprockline: Drive Design is a focused, fully on-device app. Mechanical drive studio for roller chains, sprockets, V-belts, timing belts, center distance, wrap angle, speed ratio, chain length, service factor, and shaft loads. KEY FEATURES - Chain-drive ratio and geometry - Length and shaft-load screen - Driver-tooth sensitivity - Local installation evidence - Editable sample data and CSV import - Side-by-side scenario comparison - Local PDF evidence export - Fifty-three original offline reference plates ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface Drive calculations are planning estimates. Confirm manufacturer ratings, shock factors, alignment, lubrication, guards, shaft loads, service environment, and machine safety.