Free forever
Calculate with full trust
$0
- Unlimited Add, Subtract, and Between
- Three built-in profiles
- Boundary controls
- Complete trace and source details
- Plain-text sharing
- Three immutable saves
DueRule for iPhone and iPad
Keep repeat deadline work organized.
The iOS app keeps calculation correctness free and offers one optional Lifetime Pro workflow unlock. App Store availability is not yet claimed.
Lifetime Pro
Organize repeat workflows
$19.99 U.S. target
- Unlimited saves
- Custom profiles, workweeks, time zones, and closures
- Titles, notes, favorites, and search
- JSON and CSV transfer
- Calendar drafts and local reminders
The live app will display Apple’s localized StoreKit price. No subscription, ads, account, backend, or tracking SDK at launch.