Quick help
- What it does: Calculates pre- and post-judgment interest for any U.S. jurisdiction — per-diem amounts, totals, and partial payments.
- State packs: Optional state packs auto-fill statutory rates. Rates change, so confirm the rate against the current statute or court rules for your jurisdiction before relying on a result.
- Works offline: No account or sign-in is needed, and calculations run entirely on your device.
- Reporting a calculation issue: Email us the inputs (principal, rate, dates, and any payments) and the result you expected. Please leave out client names and other confidential information.
Privacy
Everything you enter stays on your device; the app does not collect, store, transmit, or share personal information with DK4G, and includes no advertising or analytics. Read the Privacy Policy.
Not legal advice. Using the app does not create an attorney-client relationship.
Contact
Email support: