Professional drum rigging calculator with automatic fault detection – prevent costly spooling errors in seconds
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All offers valid for new downloads only. No subscription required. Offline functionality included in all packages. Age rating: 4+.
Blueprint-level precision for marine, industrial, and stage rigging professionals
Reelos transforms drum spooling from guesswork into precision engineering. Before winding a single metre of line, you visualize the entire spool development as a color-coded matrix. Every wrap position is calculated. Every potential fault is flagged. Every fleet angle is verified against acceptable limits.
The app maps nine critical spooling faults automatically – seated wraps, gapped turns, crossed zones, crushed contacts – and links each fault directly to the configuration field causing it. You fix the problem before the line ever touches the drum. No more wasted line. No more damaged rigging. No more paying twice.
Built for professionals who work with yacht recovery drums, industrial hoists, or stage rigging systems, Reelos calculates layer-by-layer wrap patterns using real drum geometry, actual line construction data, and precise lead hardware specifications. The interface is a technical schematic – dark navy backgrounds, blueprint-style diagrams, high-contrast cyan highlights – designed for deck operators wearing gloves in harsh conditions.
Professional-grade tools for precise drum and line rigging
Color-coded matrix showing every wrap, every layer, every fault before you spool. Blueprint-style diagrams reveal drum development patterns at a glance – identify crushed contacts, gapped turns, and zone crossings instantly.
Configure drum geometry, select from 16 line constructions, and set up lead hardware in minutes. Real cross-section diagrams for 6-strand nylon, 3-strand manila, 8-strand plaited, double braid polyester – each with accurate diameter, mass, and crush behavior data.
Ruled rows show wraps completed, stored metres, cumulative capacity, pitch diameter, line pull, line speed, and crush index for each layer. Export calculations before starting physical spooling work.
Nine common spooling faults mapped automatically to the exact configuration field causing the problem. Click a fault, fix the value, recalculate – done. No manual troubleshooting required.
Document each layer with timestamped photos, metadata, and status badges. Mark layers as Sorted with green confirmation. Replace or remove frames. Track baseline photos taken during actual spooling operations.
Real-time trapezoid visualization shows acceptable fleet angle band. Adjust sheave distance, lateral offset, and lead height with sliders – watch geometry confirmation update instantly. Verify angles fall within 0.6 to 2.0 degree limits before rigging.
Precision workflow for industrial and marine rigging professionals
Reelos 2.1 was built for deck operators, hoist technicians, and stage riggers who need absolute precision before committing to physical spooling. Version 2.1 introduces smoother animations and refined fault mapping algorithms. The app requires no account, no subscription, and works fully offline – download once, calculate forever.
Requires iOS device · Age rating 4+ · Contains no ads · Full offline functionality