Joker Desk Jewels

Joker Desk Jewels helps you turn the exact instruction on a product label into clear concentrate and water amounts — fully offline, with no account and no ads.

• Calculate from 1:N ratio, percent, or mL per liter
• Work from a desired final volume or from available concentrate
• See large results plus step-by-step arithmetic
• Save reusable recipes with favorites, archive, search, and filters
• Keep calculation history with immutable input snapshots
• Export and import versioned JSON backups via the system file picker
• Light, dark, system, and optional dynamic color themes
• Phone and tablet layouts with bottom navigation or navigation rail

Safety scope
DilutionDesk performs label arithmetic only. It does not identify chemicals, assess compatibility, recommend mixtures, or replace the manufacturer label, SDS, PPE, ventilation, or disposal rules. The app warns you not to mix unknown products.

Privacy
No internet permission. No analytics. No trackers. All recipes and history stay on your device unless you export a backup yourself.