Last updated 2mo ago

Janosch Zimmer

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Report updated May 5, 2026

KARL Business Day Calculator

For legal, banking, and finance professionals requiring precise deadline management and documentation.

ByJanosch Zimmer

ProductivityBusiness

Overview · Full Intel report in progress

What is KARL Business Day Calculator?

KARL Business Day Calculator is a specialized productivity tool designed to calculate and document business days and legal deadlines. It supports complex financial and legal workflows by offering market-standard roll conventions and automated audit trails for date-based calculations.

Current Momentum

v2.0

New Dark Mode enabled via the Info-section; Added Information content and Legal Deadline calculation can be done for all supported Calendars including. TARGET2 (EU), US and UK!

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Productivity

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Productivity BusinessGrossing

Rating Pulse 🇺🇸

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What makes this app unique?

What Are The Key Features?

Business Day Calculator (T+N)Standard

Calculates dates by adding or subtracting business days while automatically skipping non-business days.

Roll ConventionsStandard

Adjusts dates based on market standards including Following, Preceding, and Modified Following/Preceding.

Legal Deadline CalculationStandard

Computes statutory deadlines under German law (BGB) using specific start rules and period types.

Audit Trace with ProofStandard

Provides tabular documentation for each calculated date to ensure a verifiable audit trail.

How much does it cost?

Free

Who Built It?

Janosch Zimmer

Providing specialized tools for high-achieving professionals to manage time, legal deadlines, and complex transaction terminology.

Portfolio

Apps

Free 1Paid 1

Lifestyle50%

Finance50%

What other apps does Janosch Zimmer make?

Club COSMO

J-Book: M&A

Explore the full Janosch Zimmer report

Portfolio breakdown, audience, momentum, and every app published by Janosch Zimmer.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

What is the competitive landscape for KARL Business Day Calculator?

How's The Productivity Market?

Market outlook for this category

Available very soon

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for KARL Business Day Calculator

Key Takeaways

KARL provides a specialized, audit-ready solution for professionals needing to calculate and document complex business and legal deadlines.

Where Is It Heading?

Trend analysis

Available very soon